WO2014154102A1

WO2014154102A1 - Method, apparatus and system for over the top (ott) direct broadcasting

Info

Publication number: WO2014154102A1
Application number: PCT/CN2014/073651
Authority: WO
Inventors: 张璐; 杨友庆; 张锦辉
Original assignee: 华为技术有限公司
Priority date: 2013-03-26
Filing date: 2014-03-19
Publication date: 2014-10-02
Also published as: CN104079955B; CN104079955A

Abstract

Disclosed are a method, apparatus and system for over the top (OTT) direct broadcasting, which can enhance the continuity of OTT direct broadcasting to improve user experience. The method comprises: in case of detecting the existence of play lag during an OTT direct broadcasting, acquiring a network transmission rate corresponding to the OTT direct broadcasting and a play rate of the OTT direct broadcasting; if the play rate is larger than zero and the network transmission rate is larger than the play rate, determining a first fast play range according to the network transmission rate and the play rate, in order to adjust the play rate according to the first fast play range and perform the OTT direct broadcasting according to the adjusted play rate. The embodiment of the present invention is mainly applied to the field of Internet; in addition, the fast play range can be adjusted according to the network transmission rate and the play rate, the lag of OTT direct broadcasting can be overcome, jumping of OTT direct broadcasting contents can be avoided and the continuity of OTT direct broadcasting can be enhanced, thus user experience is improved.

Description

Method, device and system for TOP live broadcast

Technical field

The present invention relates to the field of the Internet, and in particular, to a method, device and system for over-the-top (Over The Top). Background technique

With the development of Internet technology, the 0TT video service carried on the Internet (Internet) has grown rapidly. When playing 0TT video, if the network is not in good condition, after the player runs out of locally cached video data, it needs to wait for new video data to arrive to continue playing. This event is a stuck (ie Buff er ing event). In the 0TT live broadcast, after the card is stuck, the picture is stagnant or the video data immediately before the card is played, causing the 0TT live content to lag, affecting the real-time performance of the 0TT live broadcast.

In order to improve the real-time performance of the 0TT live broadcast, an existing method deploys a monitoring module on the terminal device to monitor the user cache status in real time. When the buffered data volume is greater than the set threshold, it is determined that the 0TT live content is lagging, and then the monitoring module controls the playback. Skip part of the data in the cache to continue 0TT live or control the player to clear the cached data and re-acquire the latest video data to continue the 0TT live broadcast to eliminate the lag of the 0TT live content.

However, skip some data directly to continue 0TT live broadcast or clear the cache to re-acquire the latest video data to continue 0TT live broadcast, often causing 0TT live content jump, affecting 0TT live broadcast continuity. Summary of the invention

The embodiment of the invention provides a method, a device and a system for 0TT live broadcast, which can enhance the continuity of the 0TT live broadcast, thereby improving the user experience. The embodiment of the invention adopts the following technical solutions:

In the first aspect, a method for live broadcast of 0TT is provided, including:

Obtaining a network transmission rate corresponding to the 0TT live broadcast and a playback rate of the 0TT live broadcast when detecting that the 0TT live broadcast has a play lag; if the play rate is greater than zero and the network transmission rate The first fast play amplitude is determined according to the network transmission rate and the play rate, so as to adjust the play rate according to the first fast play amplitude, and according to the adjusted play The rate is subjected to the 0TT live broadcast.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the detecting that the 0TT live broadcast has a playback lag includes:

Determining that the 0TT live broadcast has a playback lag when detecting that the sum of the durations of the 0TT live broadcasts is greater than or equal to the first duration threshold; or, when detecting that the duration of the 0TT live broadcast is less than When the first duration threshold is described and the duration of the smooth play of the 0TT live broadcast is greater than or equal to the second duration threshold, it is determined that the 0TT live broadcast has a play lag.

In conjunction with the first aspect or the first possible implementation of the first aspect, a second possible implementation of the first aspect is also provided, and a second possible implementation manner of the first aspect The determining the first fast play amplitude, in order to adjust the play rate according to the first fast play amplitude, and performing the 0TT live broadcast according to the adjusted play rate, further includes:

According to the playing state of the 0TT live broadcast, it is determined that the 0TT broadcast is continued at the preset playing rate.

In conjunction with the second possible implementation of the first aspect, a third possible implementation manner of the first aspect is further provided. In a third possible implementation manner of the first aspect, Determining to continue the 0TT live broadcast according to the preset play rate according to the play status of the 0TT live broadcast includes: when detecting that the sum of the durations of the 0TT live broadcasts is zero, determining to press the preset play rate And continuing to perform the 0TT live broadcast; or, when detecting that the 0TT live broadcast occurs again, determining to continue the 0TT live broadcast according to the preset play rate; or detecting that the current network transmission rate is smaller than the current play rate When it is determined, the 0TT live broadcast is continued at the preset play rate.

In conjunction with the first aspect or in combination with any of the above possible implementations of the first aspect, a fourth possible implementation of the first aspect is also provided, a fourth possible aspect of the first aspect In an implementation manner, determining the first fast play range according to the network transmission rate and the play rate includes:

When Rp<Rt<Rp (l+Ya), the first fast play amplitude is determined according to a=( Rt−Rp ) /Rp; when Rt Rp (l+Ya), the first is determined according to a=Ya a fast play amplitude; wherein a is the first fast play amplitude, Rp is the play rate, Rt is the network transmission rate, and Ya is the first The first preset threshold corresponding to the fast play amplitude.

In conjunction with the first aspect or in combination with any of the above possible implementations of the first aspect, a fifth possible implementation of the first aspect is also provided, a fifth possible aspect of the first aspect In an implementation manner, after performing the 0TT live broadcast according to the first fast play range, the method further includes: determining, according to a network transmission rate and a play rate, a second fast play amplitude; proceeding according to the second fast play range When the second fast play amplitude is greater than the second preset threshold, the second preset threshold is used as the second fast play amplitude.

In conjunction with the first aspect or in combination with any of the above possible implementations of the first aspect, a sixth possible implementation of the first aspect is also provided, a sixth possible aspect of the first aspect In an implementation manner, when the first fast play amplitude is greater than the first preset threshold, the first preset threshold is used as the first fast play amplitude.

In a second aspect, a detection device for a top-of-the-line 0TT live broadcast is provided, including:

a detecting unit, configured to detect whether there is a playback lag in the 0TT live broadcast, and an acquiring unit, configured to: when the detecting unit detects that the 0TT live broadcast has a playback lag, obtain a network transmission rate corresponding to the 0TT live broadcast and the 0TT live broadcast a determining unit, configured to determine a first fast play amplitude according to the network transmission rate and the play rate, if the play rate is greater than zero and the network transmission rate is greater than the play rate, to facilitate playing The device adjusts the play rate according to the first fast play amplitude, and performs the 0TT live broadcast according to the adjusted play rate.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the detecting unit detects whether a playback lag exists in the 0TT live broadcast, including:

Determining the duration of the cardon duration of the 0TT live broadcast, and determining that the 0TT live broadcast has a playback lag when detecting that the sum of the durations of the 0TT live broadcasts is greater than or equal to the first duration threshold; or detecting the 0TT live broadcast And the duration of the smooth play of the 0TT live broadcast is less than the first duration threshold, and the duration of the smooth play of the 0TT live broadcast is greater than or When it is equal to the second duration threshold, it is determined that the 0TT live broadcast has a play lag.

In conjunction with the second aspect or in combination with the first possible implementation of the second aspect, a second possible implementation of the second aspect is also provided, and a second possible implementation of the second aspect In the mode, the determining unit is further configured to: determine the first fast play amplitude, so that the playing device adjusts the play rate according to the first fast play amplitude, and according to the adjusted play speed After the OTT broadcast is performed, the playback rate is determined to be a preset playback rate according to the playback state of the OTT live broadcast, so that the playback device continues to perform the 0TT live broadcast at the preset playback rate.

In conjunction with the second possible implementation of the second aspect, a third possible implementation of the second aspect is also provided. In a third possible implementation manner of the second aspect, the determining unit Determining the play rate as the preset play rate includes:

Determining that the playback rate is the preset playback rate when the sum of the durations of the 0TT live broadcasts is zero; or determining that the playback rate is the pre-determination when the 0TT live broadcast occurs again. The playback rate is set; or, when it is detected that the current network transmission rate is less than the current playback rate, determining that the playback rate is the preset playback rate.

A fourth possible implementation of the second aspect, and a fourth possible In an implementation manner, the determining unit determines, according to the network transmission rate and the playing rate, that the first fast play amplitude includes:

When Rp<Rt<Rp (l+Ya), the first fast play amplitude is determined according to a=( Rt−Rp ) /Rp; when Rt Rp (l+Ya), the first is determined according to a=Ya A fast play amplitude; wherein a is the first fast play amplitude, Rp is the play rate, Rt is the network transmission rate, and Ya is a first preset threshold corresponding to the first fast play amplitude.

In a third aspect, a playback device for a top-of-the-line 0TT live broadcast is provided, including:

a receiving unit, configured to receive a fast play amplitude sent by the detecting device, where the fast play amplitude is detected by the detecting device, and the playback speed of the 0TT live broadcast and the broadcast rate of the 0TT live broadcast are obtained, After determining that the play rate is greater than zero and the network transmission rate is greater than the play rate, determining the fast play amplitude according to the network transmission rate and the play rate; and playing a unit, according to the fast play The playback rate is adjusted in amplitude, and the 0TT live broadcast is performed according to the adjusted playback rate.

In conjunction with the third aspect, in a first possible implementation manner of the third aspect, the playback device is located at the 0TT video server device, or the playback device is located at the terminal device, or the playback device is located at the network device.

The fourth aspect provides a top-of-the-top 0TT live broadcast system, including a detecting device and a playing device, wherein the detecting device is configured to detect whether the 0TT live broadcast has a playback lag, and when the 0TT live broadcast is detected When there is a playback lag, the network transmission rate corresponding to the 0TT live broadcast and the playback rate of the 0TT live broadcast are obtained, and if the play rate is greater than zero and the network transmission rate is greater than the play rate, according to the network transmission rate And the playing rate, determining a first fast play amplitude, and transmitting the first fast play amplitude to the playing device; the playing device, configured to receive the first fast play amplitude sent by the detecting device, And adjusting the play rate according to the first fast play range, and performing the 0TT live broadcast according to the adjusted play rate.

With reference to the fourth aspect, in the first possible implementation manner of the fourth aspect, the detecting, by the detecting apparatus, detecting whether the 0TT live broadcast has a playback lag includes:

Detecting the duration of the stagnation of the 0TT live broadcast, and determining that the 0TT live broadcast has a play lag when detecting that the sum of the durations of the 0TT live broadcasts is greater than or equal to the first duration threshold; or detecting the 0TT The duration of the live broadcast of the Carton and the duration of the smooth play of the 0TT live broadcast, when the detected duration of the 0TT live broadcast is less than the first duration threshold and the duration of the smooth play of the 0TT live broadcast is greater than Or equal to the second duration threshold, it is determined that the 0TT live broadcast has a play lag.

In conjunction with the fourth aspect or in combination with the first possible implementation of the fourth aspect, a second possible implementation of the fourth aspect is also provided, and a second possible implementation of the fourth aspect In the mode, the detecting device is further configured to: according to the playing state of the 0TT live broadcast, determine to continue the 0TT live broadcast according to a preset playing rate, and notify the broadcast playing device to continue to perform at a preset playing rate. The 0TT live broadcast.

In conjunction with the second possible implementation of the fourth aspect, a third possible implementation manner of the fourth aspect is further provided. In a third possible implementation manner of the fourth aspect, The detecting device determines to continue the 0TT live broadcast according to the preset playing rate, including:

When it is detected that the sum of the durations of the 0TT live broadcasts is zero, it is determined that the 0TT live broadcast is continued according to the preset play rate; or, when it is detected that the 0TT live broadcast occurs again, the preset is determined to be preset. The playback rate continues to perform the 0TT live broadcast; or, when it is detected that the current network transmission rate is less than the current playback rate, it is determined that the 0TT live broadcast is continued at the preset playback rate.

In conjunction with the fourth aspect or in combination with any of the foregoing possible implementations of the fourth aspect, a fourth possible implementation of the fourth aspect is also provided, and the fourth aspect of the fourth aspect In a possible implementation manner, the determining, by the detecting device, determining, according to the network transmission rate and the playing rate, the first fast play amplitude includes: When Rp<R t <Rp (l+Ya), the first fast play amplitude is determined according to a=( R t-Rp ) /Rp; when Rt Rp (l +Ya), the determination is made according to a=Ya The first fast play amplitude; wherein a is the first fast play amplitude, Rp is the play rate, Rt is the network transmission rate, and Ya is the first preset valve corresponding to the first fast play amplitude value.

In conjunction with the fourth aspect or in combination with any of the foregoing possible implementations of the fourth aspect, a fifth possible implementation of the fourth aspect is also provided, and the fifth aspect of the fourth aspect In a possible implementation manner, the detecting device is located at the 0TT video server device, or located at the terminal device, or located at the network device; the playback device is located at the 0TT video server device, or located at the terminal device, or located in the network. device. According to the technical solution provided by the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the network transmission rate and the playback rate of the 0TT live broadcast are obtained. If the playback rate is greater than zero and the network transmission rate is greater than the playback rate, then according to the network transmission rate and The playback rate determines the first fast play range, adjusts the play rate according to the first fast play range, and performs 0TT live broadcast according to the adjusted play rate. Therefore, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, and the 0TT live content jump is avoided, and the continuity of the 0TT live broadcast can be enhanced to improve the user experience. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings may be obtained based on these drawings without any creative work.

FIG. 1 is a flowchart of a method for over-the-top 0TT live broadcast according to an embodiment of the present invention;

FIG. 1 is a flowchart of another method for over-the-top 0TT live broadcast according to an embodiment of the present invention; FIG. 3 is a flowchart of another method for over-the-top 0TT live broadcast according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a method for implementing a top-of-the-top 0TT live broadcast system according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic flowchart of a method for implementing a top-of-the-top 0TT live broadcast in an application scenario according to an embodiment of the present disclosure; FIG. 3 is a schematic flowchart of a method for implementing a live broadcast of another application scenario according to an embodiment of the present invention;

FIG. 8 is a schematic flowchart of a method for implementing a live broadcast of another application scenario according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of another over-the-top 0 ΤΤ live broadcast system according to an embodiment of the present invention; FIG. 10 is a schematic structural diagram of a top-over 0 TT live broadcast detecting apparatus according to an embodiment of the present invention; A schematic diagram of another playback device provided by the top-of-the-top 0TT live broadcast device;

FIG. 12 is a schematic structural diagram of another detecting device for over-the-top 0TT live broadcast according to an embodiment of the present invention; FIG.

FIG. 13 is a schematic structural diagram of another playback apparatus for over-the-top 0TT live broadcast according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly described in conjunction with the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are Some embodiments, rather than all of the embodiments, are invented. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the present invention provides a method for live broadcast of 0TT. As shown in FIG. 1, the method may include:

1 01. When it is detected that there is a playback lag in the 0TT live broadcast, the network transmission rate corresponding to the 0TT live broadcast and the broadcast rate of the 0TT live broadcast are obtained.

If the playback rate is greater than zero and the network transmission rate is greater than the playback rate, determining a first fast playback amplitude according to the network transmission rate and the playback rate, so as to adjust the playback rate according to the first fast playback amplitude. And performing the οττ live broadcast according to the adjusted playback rate.

The playing rate of the 0TT live broadcast is greater than zero, which means that the 0TT live broadcast is currently in a non-cartridge state. In the method of the live broadcast of the present invention, when the playback delay of the 0TT live broadcast is detected, the network transmission rate and the playback rate of the 0TT live broadcast are obtained. If the playback rate is greater than zero and the network transmission rate is greater than the playback rate, then according to the network transmission rate and The playback rate determines the first fast play range, adjusts the play rate according to the first fast play range, and performs 0TT live broadcast according to the adjusted play rate. Therefore, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, and the 0TT live content jump is avoided, and the continuity of the 0TT live broadcast can be enhanced to improve the user experience.

In the embodiment of the present invention, the method for detecting the playback delay of the 0TT live broadcast in the foregoing 101 may include the following two methods. In the embodiment of the present invention, the two methods may be applied simultaneously.

method one

When it is detected that the sum of the durations of the Karton duration (Tc) of the 0TT live broadcast is greater than or equal to Yc (the first duration threshold), that is, Tc > Yc, there is a playback lag in the OTT live broadcast.

Specifically, Tc may be the duration of one jam, or may be the sum of the durations of multiple jams. For example, if the duration of the first jam has been greater than or equal to the first duration threshold, it is determined that there is a playback lag in the 0TT live broadcast; for example, if the duration of the first jam is less than the first duration valve The value accumulates the duration of the first jam and the duration of the second jam, and so on until the sum of the sums is greater than or equal to Yc, then it is determined that there is a play lag in the OTT live broadcast. Among them, Yc can be set in advance and can be changed according to different scenarios.

Method Two

When the TTC < Yc of the 0TT live broadcast is detected and the continuous playback duration (Td) of the OTT live broadcast is greater than or equal to Yd (the second duration threshold), there is a playback lag in the 0TT live broadcast.

Wherein, Tc can be the duration of one jam, or the sum of the durations of multiple jams; smooth play refers to continuous play without card in the middle; wherein Yd can be preset, and can be different according to The scene is changed.

In the embodiment of the present invention, optionally, when determining the first fast play range according to the network transmission rate and the play rate, the following method may be adopted:

When Rp<Rt<Rp (1+Ya), the first fast play amplitude is determined according to a=( Rt−Rp ) /Rp; when Rt Rp (l+Ya), the first fast is determined according to a=Ya Playback range. Where a is the first fast play range, Rp is the play rate, R t is the network transmission rate, and Ya is the first preset threshold corresponding to the first fast play range.

The first preset threshold may be preset and may be changed according to different scenarios. As shown in FIG. 2, in the embodiment of the present invention, the method of the 0TT live broadcast may further include:

1 03. Determine a second fast play range according to the network transmission rate and the play rate, and continue the 0TT live broadcast according to the second fast play range, where the second fast play amplitude is greater than the second preset threshold, The second preset threshold is used as the second fast play amplitude. Specifically, the play rate is determined according to the second fast play amplitude, and the 0TT live broadcast is continued according to the determined play rate.

In the embodiment of the present invention, the second fast play range may be determined by using the following method:

When Rp<Rt<Rp (1+Ya), the second fast play amplitude is determined according to a=( Rt−Rp ) /Rp; when Rt Rp (l+Ya), the second fast is determined according to a=Ya Playback amplitude; where a is the second fast play range, Rp is the play rate, R t is the network transmission rate, and Ya is the second preset threshold corresponding to the second fast play range.

The second preset threshold may be set in advance, and may be changed according to different scenarios. In the embodiment of the present invention, the first preset threshold and the second preset threshold may be set to the same value. It can also be set to a different value.

In the embodiment of the present invention, when the second fast play amplitude is greater than the second preset threshold, the second preset threshold is used as the second fast play amplitude, so that the fast play amplitude is prevented from affecting the user experience.

As shown in FIG. 3, in the embodiment of the present invention, optionally, the 0TT live broadcast method may further include: 1 04. According to the play status of the 0TT live broadcast, determine to continue the 0TT live broadcast according to a preset play rate.

Specifically, the 0TT live broadcast may be determined by changing the speed of the 0TT live broadcast to the preset play rate according to the card condition or according to the network transmission rate and the play rate.

For example, when it is detected that the sum of the durations of the Karton durations of the 0TT live broadcast is zero, it is determined that the 0TT live broadcast is continued at the preset play rate.

For example, when it is detected that the jam occurs again, it is determined that the 0TT live broadcast is continued at the preset playback rate.

For example, when it is detected that the current network transmission rate is less than the current playing rate, it is determined that the 0TT live broadcast is continued at the preset playing rate.

The preset playback rate is usually set to the normal rate, and may be set to other playback rates, which is not limited in the embodiment of the present invention.

In this way, the smooth connection with the preset playback rate can be achieved, and the 0TT live broadcast can be smoothly performed. In the embodiment of the present invention, when the first fast play amplitude is greater than the first preset threshold, the first preset threshold may be used as the first fast play range. In this way, it is possible to prevent the excessively fast amplitude from affecting the user's body. In the embodiment of the present invention, the first fast play range and the second fast play range are fast play ranges, and the first fast play range and the second fast play range are divisions for distinguishing different fast play ranges. It is not intended to limit the embodiments of the invention.

In the 0TT live broadcast method of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the network transmission rate and the playback rate of the 0TT live broadcast are obtained. If the play rate is greater than zero and the network transmission rate is greater than the play rate, And determining, according to the network transmission rate and the playback rate, the first fast play range, adjusting the play rate according to the first fast play range, and performing 0TT live broadcast according to the adjusted play rate. Therefore, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, and the 0TT live content jump is avoided, and the continuity of the 0TT live broadcast can be enhanced to improve the user experience. As shown in FIG. 4, an embodiment of the present invention provides an 0TT live broadcast system 3000, which can implement a 0TT live broadcast method according to an embodiment of the present invention. The system can include a detection device 3001 and a playback device 3002, where

The detecting device 3001 is configured to detect whether there is a play lag in the 0TT live broadcast, and when detecting that the 0TT live broadcast has a play lag, obtain a network transmission rate corresponding to the 0TT live broadcast and a play rate of the 0TT live broadcast, if the play rate is greater than zero and The network transmission rate is greater than the playback rate, and the first fast play amplitude is determined according to the network transmission rate and the play rate, and the first fast play amplitude is sent to the playback device.

The current playing rate is greater than zero, which means that the 0TT live broadcast is currently in a non-cartridge state.

The playing device 3002 is configured to receive the first fast play amplitude sent by the detecting device 3001, adjust a play rate according to the first fast play amplitude, and perform the 0TT live broadcast according to the adjusted play rate.

In the embodiment of the present invention, the detecting device 3001 and the playing device 3002 may be located in the same device or may be located in different devices according to different application scenarios.

In the embodiment of the present invention, optionally, the detecting device 3001 detects whether the 0TT live broadcast has a play lag, and can detect the duration of the 0TT live broadcast. When the detected duration of the 0TT live broadcast is greater than or When it is equal to the first time threshold, the 0TT live broadcast has a playback lag.

Specifically, the sum of the durations of the stuck times may be the duration of one jam, or may be the sum of the durations of the multiple jams. For example, if the duration of the first jam has been greater than or equal to the The first duration threshold determines that there is a playback lag in the 0TT live broadcast; for example, if the duration of the first jam is less than the first duration threshold, the duration of the first jam is the second time The duration of the stuck is accumulated, and so on until the sum of the accumulated times is greater than or equal to the first duration threshold, then it is determined that there is a playback lag in the 0TT live broadcast. In addition, the first duration threshold may be preset and may be changed according to different scenarios.

In the embodiment of the present invention, optionally, the detecting device 3001 detects whether the 0TT live broadcast has a play lag, and can detect the duration of the 0TT live broadcast and the duration of the smooth play of the 0TT live broadcast. When the sum of the durations of the Cartons is less than the first duration threshold and the duration of the smooth playback of the 0TT live broadcast is greater than or equal to the second duration threshold, the 0TT live broadcast has a playback lag.

Wherein, the sum of the durations of the Kardons may be the duration of one jam, or may be the sum of the durations of the multiple jams; the smooth play refers to the continuous play without the jam in the middle; the second duration valve Values can be set in advance and can be changed according to different scenarios.

In the embodiment of the present invention, the detecting device 3001 may be further configured to: according to the playing state of the 0TT live broadcast, determine to continue the 0TT live broadcast according to a preset playing rate, and notify the playing device 3002 to preset according to the preset The playback rate continues with the 0TT live broadcast.

Specifically, the 0TT live broadcast can be determined according to the preset play rate according to the card condition or according to the network transmission rate and the current play rate.

In the embodiment of the present invention, optionally, when the detecting apparatus 3001 determines to continue the 0TT live broadcast according to the preset playing rate, it may detect that the sum of the durations of the 0TT live broadcasts is zero, and determine to play according to the preset. The rate continues with the 0TT live broadcast.

Alternatively, the detecting device 3001 determines that when the 0TT live broadcast is continued according to the preset playing rate, when it is detected that the card is re-occurring, it is determined that the 0TT live broadcast is continued at the preset playing rate.

Alternatively, the detecting device 3001 determines that when the 0TT live broadcast is continued according to the preset play rate, when the current network transmission rate is lower than the current play rate, it is determined that the 0TT live broadcast is continued according to the preset play rate.

The preset playback rate is usually set to the normal rate, and the playback rate is not limited.

In the embodiment of the present invention, optionally, when the detecting device 3001 determines the first fast play amplitude according to the network transmission rate and the play rate, if Rp<Rt <Rp (l+Ya), according to a=( Rt-Rp ) /Rp determines the first fast play amplitude, and if Rt Rp (l+Ya), the first fast is determined according to a=Ya Speed playback amplitude.

Where a is the first fast play range, Rp is the play rate, Rt is the network transmission rate, and Ya is the first preset threshold corresponding to the first fast play range.

In the embodiment of the present invention, the detecting device 3001 is further configured to: determine, according to a network transmission rate and a playing rate, a second fast playing amplitude; and send the second fast playing amplitude to the playing device 3002, so that the playing The device 3002 continues the 0TT live broadcast according to the second fast play range.

Specifically, the play rate is determined according to the second fast play amplitude, and the 0TT live broadcast is continued at the determined play rate.

In the embodiment of the present invention, when the second fast play amplitude is greater than the second preset threshold, the detecting device 3001 may use the second preset threshold as the second fast play amplitude. Similarly, when the first fast play amplitude is greater than the first preset threshold, the detecting device 3001 may use the first preset threshold as the first fast play amplitude. In this way, it is possible to prevent the fast play range from being too large to affect the user experience. In the embodiment of the present invention, the first preset threshold and the second preset threshold may be the same or different according to different application scenarios, which are not limited in the embodiment of the present invention.

In the fast playback process of the 0TT live broadcast system of the embodiment of the present invention, the detecting device 3001 monitors the cache and the network status in real time, and stops the fast play when Tc=0 or when the stuck or Rt<Rp occurs, and the Tc is not equal if the fast play is stopped. 0, then the sum of the remaining durations of the current Carton is determined according to Tc, =Tc_a*T, and the sum of the remaining durations of the previous Cartons is included in the sum of the durations of the next Carton. Where Tc is the sum of the remaining durations of the Cartons, Tc is the sum of the durations of the Cartons, a is the fast play range, and T is the duration of the fast play by the fast play range a.

In the embodiment of the present invention, after the fast play is started, the judgment of whether to start the fast play may not be performed, and the fast play range is adjusted in real time according to the parameter change (for example, Rt change), and the fast play is continued until the condition for stopping the fast play is satisfied, where a The calculation method is the same as the determination method of the above a.

In the embodiment of the present invention, the playing device 3002 starts fast play according to the instruction of the detecting device 3001, and the fast playing amplitude fine-tuning data parameter determined by the detecting device 3001 (such as frame rate (Frame Per Second), display time) Mark ( Pr es en ta t Time Time S tamp , the tube is called PTS ), time stamp (t ime st amp ), etc. The instructions for the interaction signaling between the detecting device 3001 and the playing device 3002 include: starting fast play signaling, parameter change signaling (such as a change), and stopping fast play, etc., wherein the fast play signaling and the parameter change are initiated. The signaling is accompanied by a parameter name and a parameter value, and the stop fast play signaling is accompanied by a stop reason, and the playback device 3002 sends a letter to the detection device 3001. The feedback is given, and the detection device 3001 is successfully executed or failed, and if it fails, the failure reason is attached. In the embodiment of the present invention, the detecting device 3001 may be located in the 0TT video server device, or the detecting device 3001 may be located in the terminal device, or the detecting device 3001 may also be located in the network device; the playing device 3002 may be Located at the 0TT video server device, or the playback device 3002 can be located at the terminal device, or the playback device 3002 can be located at the network device.

In the 0TT live broadcast system of the embodiment of the present invention, when the 0TT live broadcast is delayed, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, and the 0TT live content jump is avoided, and the 0TT live broadcast can be enhanced. Continuity to improve the user experience.

In the embodiment of the present invention, the 0TT live broadcast system shown in FIG. 4 can implement the above-mentioned 0TT live broadcast method through the interaction process shown in FIG. 5. The system includes the detecting device 3001 and the playing device 3002, the detecting device 3001 is configured to detect whether the 0TT live broadcast has a lag, calculate a fast play amplitude, and control the playback device 3002 to perform fast play; the playback device 3002 is configured to perform the detection according to the detection The instruction of the device 3001 performs fast playback, and determines the play rate according to the fast play amplitude sent by the detecting device 3001, and performs the 0TT live broadcast at the determined play rate.

The meanings of related parameters and parameters in the embodiments of the present invention are shown in Table 1.

Table 1

In Table 1, the sum of the durations of the Carton (Tc) can be the duration of one carton, or the sum of the durations of multiple cartons; the duration of the smooth play (Td) means that there is no carton in the middle. The duration of the playback, that is, the last time the card is over to the current time interval; the duration of the fast playback (T) means The duration of fast playback by fast playback amplitude; the playback rate (Rp) refers to the current playback rate; the fast playback amplitude refers to the current fast playback amplitude; Yc is the preset duration of the TC, which can be set according to different application scenarios. Change; Yd is the preset duration of Td, which can be changed according to different application scenarios; Ya is a preset threshold of a, which can be changed according to different application scenarios.

The detecting device 3001 detects the playing state of the 0TT live broadcast, when Tc ^Yc or Td ^Yd, and is currently in a non-caldon state (ie, currently playing smoothly) and Rt >Rp, according to the network transmission rate.

Rt— Rp and playback rate, determine the fast playback amplitude a. Specifically, ^{a =} ^^ when Rp < Rt < Rp (l + Ya); ^{a =} Ya when Rt ^ Rp (l + Ya).

In the fast play process, the detecting device 3001 monitors the cache and the network status in real time. When Tc=0 or when the card is stuck or Rt<Rp, the fast play is stopped. If the fast broadcast is stopped, the Tc is not equal to 0, according to Tc, =Tc - a *T determines the sum of the remaining durations of the current Carton, and counts the sum of the remaining durations of the current Carton into the sum of the duration of the next Carton. Where Tc is the sum of the remaining durations of the previous Carton, Tc is the sum of the durations of the Cartons, a is the fast play range, and T is the duration of the fast play by the fast play amplitude a.

As shown in FIG. 5, the specific implementation steps may include:

501. The detecting device 3001 detects the playing state of the 0TT live broadcast.

502. When the detecting apparatus 3001 detects that there is a playback lag in the 0TT live broadcast, the detecting apparatus 3001 detects a network transmission rate and detects a playback rate of the 0TT live broadcast.

In the embodiment of the present invention, the detecting apparatus 3001 may determine that the 0TT live broadcast has a playback lag method. For example, the method for determining the playback lag of the 0TT live broadcast in the embodiment shown in FIG. 1 is not described herein.

503. If the play rate (Rp) is greater than zero and the network transmission rate (Rt) is greater than the play rate, the detecting device 3001 determines the first fast play amplitude according to the network transmission rate and the play rate.

According to the playback rate p) being greater than zero, the 0TT live broadcast is currently in a non-cart state, and the first fast play range is determined according to the network transmission rate and the play rate. For the method, refer to the embodiment shown in FIG. 1 , and details are not described herein again.

In addition, in the embodiment of the present invention, if a is greater than a preset threshold (for example, Ya in Table 1), the first preset threshold may be used as the first fast play amplitude. In this way, it is possible to prevent the fast play range from being too large to affect the user experience. 504. The detecting apparatus 3001 sends, to the playing apparatus 3002, signaling that carries the first fast play amplitude.

505. The playback device 3002 receives the signaling sent by the detecting device 3001, and parses the signaling to learn the first fast play amplitude, and performs the 0TT live broadcast according to the first fast play amplitude.

Specifically, the playing device 3002 determines the playing rate according to the first fast playing amplitude, and performs the 0TT live broadcast according to the determined playing rate.

506. The detecting apparatus 3001 detects a network transmission rate and detects a playback rate of the 0TT live broadcast, and determines a second fast play range according to the network transmission rate and the play rate.

For the method for specifically determining the second fast play range, refer to the embodiment shown in FIG. 1 , and details are not described herein again.

In addition, in the embodiment of the present invention, if a is greater than the second preset threshold (for example, Ya in Table 1), the second preset threshold may be used as the second fast play amplitude. In this way, it is possible to prevent the fast play amplitude from being too large to affect the user experience. In the embodiment of the present invention, the first preset threshold and the second preset threshold may be the same or different according to different application scenarios.

507. The detecting apparatus 3001 sends, to the playing apparatus 3002, signaling that carries the second fast play amplitude.

508. The playback device 3002 receives the signaling sent by the detecting device 3001, and parses the signaling to learn the second fast play amplitude, and continues the 0TT live broadcast according to the second fast play amplitude.

In this way, after the fast play is started, the fast play range can be adjusted in real time according to the network transmission rate and the play rate.

509. The detecting apparatus 3001 detects a play status of the 0TT live broadcast, determines to continue the 0TT live broadcast according to the preset play rate according to the play status of the 0TT live broadcast, and sends signaling to the playback apparatus 3002, instructing the playback apparatus 3002 to press The 0TT live broadcast is continued at the preset playback rate.

In the embodiment of the present invention, the preset playback rate is usually set to the normal rate, and may be set to other playback rates, which is not limited in the embodiment of the present invention.

510. The playback device 3002 continues the 0TT live broadcast according to the preset sending rate according to the indication sent by the detecting device 3001.

In the embodiment of the present invention, the first fast play amplitude and the second fast play amplitude are both fast broadcasts. The first fast-playing amplitude and the second fast-playing amplitude are divided to distinguish different fast-playing amplitudes, and do not constitute a limitation on the embodiment of the present invention.

In the 0TT live broadcast system of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, and the 0TT live content jump is avoided, which can be enhanced. 0TT live continuity to improve user experience.

The application scenario shown in FIG. 6 is taken as an example to describe the specific implementation process of the 0TT live broadcast method in the embodiment of the present invention. In the scenario shown in FIG. 6, the detecting device is located in a terminal device (such as an OT player, etc.) and a playback device. It is located on the 0TT video server device (the playback device can also be located at the head end device that provides 0TT video, such as the 0TT video source, 0TT video website, etc.), and the OTT live broadcast is performed through the transport stream (Transpor t S tream, the tube is called TS). It should be understood that FIG. 6 is only an application scenario of the embodiment of the present invention, and is an exemplary description for facilitating the understanding of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.

As shown in FIG. 6, the method for the 0TT live broadcast of the embodiment of the present invention may include:

601. The terminal device sends a video request to the 0TT video server device.

602. The 0TT video server device sends a TS video stream to the terminal device after receiving the request.

603. The terminal device performs real-time detection on a network transmission rate of the data buffer and the video stream when performing the 0TT live broadcast according to the received TS video stream.

Specifically, the duration of each bucating event of the terminal device recording cache is recorded as one card duration. For example, let the duration of the Karton duration caused by the i-th Buf fering be Ti, the duration of the last stay of the last fast play is Tr, and the number of stuck times between the two jams is n times, the Bell 'J: Caton The sum of the durations is Tc = Tr + ∑Ti. In the embodiment of the present invention, the network transmission rate and the playback rate may be represented by a code rate, and the network transmits the tf ¹ rate, that is, the number of video content bits transmitted per second, and the playback rate may pass the code rate parameter in the video stream or pass parameters such as FPS. OK, can also be determined according to the fast play amplitude.

604. The terminal device detects that the 0TT live broadcast has a playback lag, and determines whether to perform fast play. If fast play is performed, the fast playback signaling is sent to the 0TT video server device, where the fast play signaling carries a fast play amplitude.

In the embodiment of the present invention, the method for determining that the playback delay exists in the 0TT live broadcast may be referred to the method for determining the playback lag of the 0TT live broadcast in the embodiment shown in FIG. 1 , and details are not described herein again.

605. After receiving the signaling, the 0TT video server device determines whether to perform fast play according to its processing capability and current load situation. If fast play is performed, 606 is performed; if fast play is not performed, the terminal device is notified that the fast play is not performed temporarily (not shown in the figure), and the terminal device may perform 604 again after a preset time.

606. The 0TT video server device modifies a PTS field in the PES packet of the TS video stream (this field controls a time when the video frame is displayed), and sends the modified TS video stream to the terminal device.

For example, the difference between the PTSs of the modified adjacent PES packets is t, and the modified difference is de lt _ t, then del t _ t=t * (la), and the terminal device plays after receiving the modified TS video stream. The rate will be faster for fast playback.

607. The terminal device adjusts the fast playback amplitude in real time during the fast playback process according to the modified TS video stream.

The terminal device detects the buffer condition, the network condition, and the fast play effect. If the network transmission rate of the video decreases after the playback lag is completely repaired, it is insufficient to support the player to play at the current rate; or the network transmission rate increases, and the support can be faster. The playback rate, then the terminal device re-determines the fast play amplitude. The method of determining the fast play amplitude can be implemented by re-determining the fast play range, and will not be described again.

608. The terminal device sends parameter change signaling to the 0TT video server device, where the parameter change signal carries the adjusted fast play amplitude.

609. After receiving the parameter change signaling, the 0TT video server device determines whether to perform fast playback according to the adjusted fast play range according to the processing capability and the current load condition.

If the fast play is performed according to the adjusted fast play range, execute 610; if the fast play is not performed according to the adjusted fast play range, the 0TT video server device notifies the terminal device that the fast play is not performed according to the adjusted fast play range. The reason can also inform the terminal device that the fast playback is not performed according to the adjusted fast play amplitude, and the 0TT video server device continues to modify the PTS field (not shown) according to the original parameters.

610. The 0TT video server device notifies the terminal device to perform fast playback according to the fast playback range, and the 0TT video server device modifies the PTS field in the PSS packet of the TS video stream according to the adjusted fast play range, and The terminal device sends the modified TS video stream.

611. The terminal device continues to perform fast playback according to the TS video stream sent by the 0TT video server device.

612. When the terminal device detects that the stop fast play condition is met, send the stop fast play signaling to the 0TT video server device, and stop the fast play signaling to carry the reason for stopping the fast play. In the embodiment of the present invention, when the fast play is stopped due to the occurrence of a Buffering event or the network transmission rate is decreased, the playback lag is not completely repaired, and the sum of the cumulative durations of the accumulated cards is updated. The next time you perform a quick play, the playback plays a lag.

613. The 0TT video server device stops the fast play and returns an acknowledgement message to the terminal device. In the 0TT live broadcast method of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, the 0TT live content jump is avoided, and the 0TT live broadcast can be enhanced continuously. Sex to improve the user experience.

The application scenario shown in FIG. 7 is taken as an example to describe the specific implementation process of the 0TT live broadcast method in the embodiment of the present invention. In the scenario shown in FIG. 7, the detecting device is located in a terminal device (such as an OT player, etc.) and a playback device. It is located in a network device (such as a Broadband Remote Access Server (BRAS), an edge router, etc.), and is broadcasted in real time through a transport stream (Transpor t St ream, called TS). It should be understood that FIG. 7 is only an application scenario of the embodiment of the present invention, and is an exemplary description for facilitating understanding of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.

Different from the application scenario shown in FIG. 6, the application scenario playing device shown in FIG. 7 is located on a network device such as a BRAS or an edge router, and the network device forwards the video request and the video data, and the terminal device sends the related signaling to the network device, and the network The device modifies the PTS value in the PES packet when forwarding the TS video stream.

As shown in FIG. 7, the method for the 0TT live broadcast of the embodiment of the present invention may include:

701. The terminal device sends a video request to the 0TT video server device via the network device.

702. The 0TT video server device sends a TS video stream to the terminal device via the network device after receiving the request.

703. The terminal device performs real-time detection on a network transmission rate of the data buffer and the video stream when performing the 0TT live broadcast according to the received TS video stream.

Specifically, the duration of each buffer (buffer ing event) of the terminal device recording cache is recorded as one card duration. For example, let the duration of the Karton caused by the i-th Buffer ing be Ti, and the duration of the last pause of the last fast play is Tr, and the number of stuck times between the two jams is n times, and the Bell 'J: Carton continues The sum of the durations is Tc = Tr + Ti . In the embodiment of the present invention, the network transmission rate and the playback rate may be represented by a code rate, where the transmission rate of the network tf ¹ is the number of video content bits transmitted per second, and the playback rate may pass the code rate parameter in the video stream or pass the FPS. The parameter determination can also be determined according to the fast play amplitude. 704. The terminal device detects that the 0TT live broadcast has a playback lag, and determines whether to perform fast play. If fast play is performed, the fast play signaling is sent to the network device, and the fast play signaling carries a fast play amplitude.

705. After receiving the signaling, the network device determines whether to perform fast playback according to its processing capability and current load conditions.

If fast play is performed, 706 is performed; if fast play is not performed, the terminal device is notified that the fast play is not performed temporarily (not shown in the figure), and the terminal device may perform 704 again after a preset time.

706. When the network device forwards the TS video stream originating from the 0TT video server device, modify a PTS field in the PTS packet of the TS video stream (this field controls a time when the video frame is displayed), and send the modified to the terminal device. TS video stream.

707. The terminal device adjusts the fast playback range in real time during the fast playback process according to the modified TS video stream.

708. The terminal device sends parameter change signaling to the network device, where the parameter change signaling carries the adjusted fast play amplitude.

709. After receiving the parameter change signaling, the network device determines whether to perform fast playback according to the adjusted fast play range according to the processing capability and the current load condition.

If the fast play is performed according to the adjusted fast play range, execute 710; if the fast play is not performed according to the adjusted fast play range, the network device notifies the terminal device that the fast play is not performed according to the adjusted fast play range, or At the same time, the terminal device is notified that the fast playback is not performed according to the adjusted fast play amplitude, and the network device continues to modify the PTS field according to the original parameter (not shown in the figure). 71 0. The network device notifies the terminal device to perform fast playback according to the fast playback range, and the network device modifies the TS video stream PES according to the adjusted fast play amplitude when forwarding the TS video stream originating from the 0TT video server device. The PTS field in the packet and send the modified TS video stream to the terminal device.

711. The terminal device continues to play fast according to the TS video stream sent by the network device.

712. When the terminal device detects that the stop fast play condition is met, send the stop fast play signaling to the network device, where the stop fast play signaling carries the reason for stopping the fast play.

In the embodiment of the present invention, when the fast playback is stopped due to the occurrence of the Buf fering event or the network transmission rate is decreased, the playback lag is not completely repaired, and the sum of the cumulative durations of the accumulated stagnation is updated. Leave it for the next time you play the quick play to fix the playback lag.

713. The network device stops fast play and returns a confirmation message to the terminal device.

In the 0TT live broadcast method of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, the 0TT live content jump is avoided, and the 0TT live broadcast can be enhanced continuously. Sex to improve the user experience. The application scenario shown in FIG. 8 is taken as an example to describe the specific implementation process of the 0TT live broadcast method in the embodiment of the present invention. In the scenario shown in FIG. 8, the detection device is located in a network device (such as a broadband remote access server (Broadband Remote). Acces s Server, called BRAS), edge routers, etc.;), the playback device is located on the 0TT video server device (the playback device can also be located at the 0TT video source, 0TT video website, etc.). The OTT broadcast is performed by a transport stream (Transpor t S re ream, called TS). It should be understood that FIG. 8 is only an application scenario of the embodiment of the present invention, and is an exemplary description for facilitating the understanding of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.

As shown in FIG. 8, the method for the 0TT live broadcast of the embodiment of the present invention may include:

801. The terminal device sends a video request to the 0TT video server device via the network device.

802. The 0TT video server device sends a TS video stream to the terminal device via the network device after receiving the request.

803. The terminal device performs a 0TT live broadcast according to the received TS video stream.

804. When the terminal device performs the 0TT live broadcast, the network device performs real-time detection on the network transmission rate of the data cache and the video stream.

Specifically, the duration of each Bucating event of the network device record buffer is recorded as A carton lasts for a long time. For example, let the duration of the Karton caused by the i-th Buffer ing be Ti, the duration of the last stuck pause of the last fast play is Tr, and the number of stuck times between the two jams is n times, the sum of the duration of the Kardon Is Tc = Tr + Ti. In the embodiment of the present invention, the network transmission rate and the playback rate may be represented by a code rate, and the network transmission rate is the number of video content bits transmitted per second, and the playback rate may pass the code rate parameter in the video stream or pass parameters such as FPS. OK, can also be determined according to the fast play amplitude.

805. The network device detects that the 0TT live broadcast has a playback lag, and determines whether to perform fast play. If fast play is performed, the fast playback signaling is sent to the 0TT video server device, where the fast play signaling carries a fast play amplitude.

In the embodiment of the present invention, the method for determining the live broadcast of the 0TT by the network device may refer to the method for determining the playback lag of the 0TT live broadcast in the embodiment shown in FIG. 1 , and details are not described herein again.

806. After receiving the signaling, the 0TT video server device determines whether to perform fast playback according to its processing capability and current load.

If fast play is performed, 706 is performed; if fast play is not performed, the network device is notified not to perform fast play (not shown), and the terminal device may perform 704 again after a preset time.

807. The 0TT video server device modifies a PTS field in the PES packet of the TS video stream (the field controls a time when the video frame is displayed), and sends the modified TS video stream to the terminal device by using the network device.

For example, the difference between the PTS of the pre-adjacent PES packet is t, and the modified difference is del t_ t, then del t _ t=t* (la), and the playback rate of the modified TS video stream is received by the terminal device. Will speed up, thus achieving fast playback.

808. The terminal device performs fast playback according to the modified TS video stream.

809. During the fast playback of the modified TS video stream by the terminal device, the network device adjusts the fast play range in real time.

The network device detects the buffer condition, the network condition, and the fast play effect. If the network transmission rate of the video decreases before the playback lag is completely repaired, it is insufficient to support the player to play at the current rate; or the network transmission rate increases, and the support can be faster. The playback rate, then the network device re-determines the fast play amplitude. The method of determining the fast play amplitude can be implemented by re-determining the fast play range, and will not be described again.

810. The network device sends parameter change signaling to the 0TT video server device, where the parameter change signaling carries the adjusted fast play amplitude. 811. After receiving the parameter change signaling, the OTT video server device determines whether to perform fast playback according to the adjusted fast play range according to the processing capability and the current load condition.

If fast playback is performed according to the adjusted fast play range, perform 71 0; if the fast play is not performed according to the adjusted fast play range, the 0TT video server device notifies the network device that the fast playback amplitude is not fast. Play, you can also inform the network device that the fast playback is not performed according to the adjusted fast play amplitude. The 0TT video server device continues to modify the PTS field (not shown) according to the original parameters.

812. The 0TT video server device notifies the terminal device to perform fast playback according to the fast playback range, and the 0TT video server device modifies the PTS field in the PES packet of the TS video stream according to the adjusted fast play range, and passes the network. The device sends the modified TS video stream to the terminal device.

81. The terminal device continues to perform fast playback according to the TS video stream sent by the 0TT video server device of the 0TT video server device.

814. When the network device detects that the stop fast play condition is met, send the stop fast play signaling to the 0TT video server device, and stop the fast play signaling to carry the reason for stopping the fast play.

815. The 0TT video server device stops fast play and returns a confirmation message to the terminal device. In the scenario shown in FIG. 8, the detection play lag and the fast play are transparent to the terminal device in the network device and the 0TT video server device respectively. Since the network device cannot directly obtain the user data cache state, it is necessary to establish a virtual cache. The difference between the network transmission rate and the playback rate calculates the user's cache status, for example, user cache data = (network transmission rate - video playback rate) * time.

In the 0TT live broadcast method of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, the 0TT live content jump is avoided, and the 0TT live broadcast can be enhanced continuously. Sex to improve the user experience.

It should be noted that, in other application scenarios of the embodiment of the present invention, the detecting device and the playing device may be deployed on the same device (such as a head end device or a terminal device or a network device), and the specific implementation method is shown in FIG. 6 and FIG. 7. The steps shown in Figure 8 are similar and will not be described.

The detecting device and the playing device in the 0TT live broadcast system of the embodiment of the present invention can implement the 0TT live broadcast method of the embodiment of the present invention by using the hardware architecture shown in FIG. As shown in FIG. 9, the detecting device 91 00 includes a buffer analyzer 9101, a cardon timer 91 02, and a modulation controller 91 03.

The cache analyzer 9101 is configured to detect a buffer status and a stuck state.

When the cache analyzer 9101 is deployed on the terminal device, the data cache of the terminal device can be directly detected. When the cache analyzer 9101 is deployed on the 0TT video server device or the network device, the network transmission rate (or the playback rate) can be used to cache the virtual cache. The way to calculate cached data, such as cached data = (network transfer rate - video playback rate) * time.

The Karton timer 9102 is configured to determine the sum of the durations of the stagnation according to the output of the Cache Analyzer 91 01. The method for determining the sum of the continuation durations is the same as the other embodiments of the present invention.

The modulation controller 9103 is configured to determine to start fast play, change the fast play range, or stop according to the sum of the stuck durations calculated by the stuckon timer 9102, the buffer status detected by the cache analyzer 9101, and the transmission/play rate. Play quickly.

For example, the method for determining that the playback delay is present in the 0TT live broadcast can be determined by the method of determining the playback delay of the 0TT live broadcast in the embodiment shown in FIG. 1 , and details are not described herein again.

In the fast playback process, when Tc=0 or when the card is stuck or Rt<Rp, the fast play is stopped. If Tc is not equal to 0 when the fast play is stopped, the current time is determined according to Tc, =Tc - a*T. The sum of the remaining Carton durations, and the sum of the remaining Carton durations is included in the sum of the duration of the next Carton. Where Tc is the sum of the remaining durations of the Kartons, Tc is the sum of the durations of the Cartons, a is the fast play range, and T is the duration of the fast play by the fast play range a.

In the embodiment of the present invention, after the fast play is started, the modulation controller 9103 no longer performs the judgment of whether to start the fast play, and the modulation controller 91 03 adjusts the fast play amplitude a in real time according to the parameter change (for example, Rt change), and continues to play fast until the content is satisfied. The condition for stopping the fast play, the calculation method of a here is the same as the determination method of the above a.

As shown in FIG. 9, the detecting device 9200 includes a signaling analyzer 9201 and a playback controller 9202. The signaling analyzer 9201 is configured to extract network layer signaling information for processing by the detecting device 91 00. The play controller 9202 is configured to modify the forwarded stream specific field according to the decision result of the detecting device 91 00 to change the play rate.

The interaction signaling between the detecting device 91 00 and the playback device 9200 is the same as that of the above-described 0TT live broadcast of the embodiment of the present invention, and details are not described herein.

The hardware architecture shown in Figure 9 is deployed on the same device (such as a headend device or a terminal device or network device). The playback device 9200 can control the playback rate at the network layer by modifying corresponding fields (such as the PTS field) in the TS video stream, so that the fast play is transparent to the player or the streaming server software, correspondingly, Signaling is passed to the detection device 9100 for obtaining the parameters required for the decision.

The function of each unit of the detecting device in the embodiment of the present invention is described in the following. For a detailed description, refer to the method embodiment. The detecting device in the embodiment of the present invention may perform the corresponding steps in the foregoing method embodiment.

In the 0TT live broadcast system of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, the 0TT live content jump is avoided, and the continuity of the 0TT live broadcast can be enhanced. To improve the user experience. As shown in FIG. 10, an embodiment of the present invention provides a 0TT live detection device 1000. The detection device may include: a detecting unit 1001, an obtaining unit 1002, and a determining unit 1003, where:

The detecting unit 1001 can be used to detect whether there is a playback lag in the 0TT live broadcast.

The acquiring unit 1002 may be configured to obtain, when the detecting unit detects that the 0TT live broadcast has a playback lag, obtain a network transmission rate corresponding to the 0TT live broadcast and a play rate of the 0TT live broadcast.

The determining unit 1003 may be configured to determine a first fast play amplitude according to the network transmission rate and the play rate, if the play rate is greater than zero and the network transmission rate is greater than the play rate, so that the playback apparatus adjusts the play according to the first fast play range. Rate, and 0TT live broadcast according to the adjusted playback rate.

Wherein, the current playing rate is greater than zero, which means that the current playing state is in a non-stuck state.

In the embodiment of the present invention, optionally, the detecting unit 1001 detects whether there is a play lag in the 0TT live broadcast, and may detect the duration of the stuck time of the 0TT live broadcast, and when the detected duration of the 0TT live broadcast is greater than or equal to When the first time threshold is reached, the 0TT live broadcast has a playback lag.

Alternatively, the detecting unit 1001 detects whether the 0TT live broadcast has a playback lag, and can detect the duration of the 0TT live broadcast and the duration of the smooth play of the 0TT live broadcast. When the detected duration of the 0TT live broadcast is less than When the first duration threshold is used and the duration of the smooth play of the 0TT live broadcast is greater than or equal to the second duration threshold, the 0TT live broadcast has a playback lag.

In the embodiment of the present invention, the determining unit 1003 is further configured to determine the first fast play amplitude, so that the playback device adjusts the play rate according to the first fast play range, and according to the adjusted play rate. After the 0TT live broadcast, the broadcast is determined according to the play status of the 0TT live broadcast. The playback rate is a preset playback rate, so that the playback device continues the 0TT live broadcast at the preset playback rate.

The determining unit 1 003 is specifically configured to: when the sum of the durations of the 0TT live broadcasts is zero, determine the play rate as the preset play rate;

Alternatively, the determining unit 1003 is specifically configured to: when the 0TT live broadcast occurs again, determine the play rate as the preset play rate;

Alternatively, the determining unit 1 003 is specifically configured to determine that the playing rate is the preset playing rate when detecting that the current network transmission rate is less than the current playing rate.

In the embodiment of the present invention, optionally, the determining unit 1003 determines that the first fast play range can be referred to the embodiment shown in FIG. 1 , and details are not described herein again.

In the embodiment of the present invention, the determining unit 1 003 is further configured to determine, according to the network transmission rate and the playing rate, the second fast playing range, so that the playing device continues to perform the 0TT live broadcast according to the second fast playing amplitude.

Specifically, the playing device determines the playing rate according to the second fast playing amplitude determining the playing rate, and continues the 0TT live broadcast according to the determined playing rate.

In the embodiment of the present invention, the detecting device 1 000 may be located at the 0TT video server device, or the detecting device 1000 may be located at the terminal device, or the detecting device 1 000 may be located at the network device.

The function of each unit of the detecting apparatus 1000 of the embodiment of the present invention is described as a cylinder. For a detailed description, refer to the above method embodiment. The detecting apparatus of the embodiment of the present invention may perform the corresponding steps in the foregoing method embodiment.

In the 0TT live broadcast detection apparatus of the embodiment of the present invention, when the playback delay of the 0TT live broadcast is detected, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, the 0TT live content jump is avoided, and the 0TT live broadcast can be enhanced. Continuity to improve the user experience. As shown in FIG. 11, an embodiment of the present invention provides a 0TT live broadcast device 2000, which may include: a receiving unit 2001, a playing unit 2002, where:

The receiving unit 2001 can be configured to receive a fast play amplitude sent by the detecting device, where the fast playback amplitude is detected by the detecting device, and the network transmission rate corresponding to the 0TT live broadcast and the broadcast rate of the 0TT live broadcast are obtained. Determine that the playback rate is greater than zero and the network transmission rate is large At the playback rate, the fast playback amplitude is determined according to the network transmission rate and the playback rate. The current playing rate is greater than zero, that is, the 0TT live broadcast is currently in a non-cartridge state.

The playing unit 2002 can be configured to adjust the playing rate according to the fast playing speed, and perform 0TT live broadcast according to the adjusted playing rate.

The functions of the units of the playback device in the embodiments of the present invention are described in the following. For a detailed description, refer to the foregoing method embodiments. The playback device in the embodiment of the present invention may perform the corresponding steps in the foregoing method embodiments.

In the embodiment of the present invention, the playback device 2000 may be located at the 0TT video server device, or the playback device 2000 may be located at the terminal device, or the playback device 2000 may be located at the network device.

The playback device of the 0TT live broadcast according to the embodiment of the present invention adjusts the play rate according to the first fast play range according to the first fast play range determined by the network transmission rate and the play rate when the receiving detection device detects that the 0TT live broadcast has a play lag, and The 0TT live broadcast is performed according to the adjusted playback rate. Therefore, the fast play range can be adjusted according to the network transmission rate and the play rate, and the lag of the 0TT live broadcast can be repaired, and the 0TT live content jump can be avoided, and the continuity of the 0TT live broadcast can be enhanced to improve the user experience. As shown in FIG. 12, an embodiment of the present invention provides another 0TT live detection apparatus 1200. The detection apparatus may include: a bus 1204 and an interface 1201, a processor 1202, and a storage 1203 connected to the bus 1204, where:

The memory 1203 is for storing instructions, and the processor 1202 executes instructions in the memory 1203 for performing the following steps:

Detecting whether there is a playback lag in the 0TT live broadcast; when detecting that the 0TT live broadcast has a playback lag, obtaining a network transmission rate corresponding to the 0TT live broadcast and a playback rate of the 0TT live broadcast; if the play rate is greater than zero and the network transmission rate is greater than the play rate, The first fast play amplitude is determined according to the network transmission rate and the play rate, so that the playback device adjusts the play rate according to the first fast play range, and performs the 0TT live broadcast according to the adjusted play rate.

The interface 1201 is configured to send the first fast play amplitude to the playback device, so that the playback device performs the 0TT live broadcast according to the first fast play amplitude.

Optionally, the processor 1202 executes the instruction in the memory 1203, specifically, to detect the duration of the 0TT live broadcast, and when the detected duration of the 0TT live broadcast is greater than or equal to the first When the threshold is long, it is determined that the 0TT live broadcast has a playback lag; or, the duration of the 0TT live broadcast and the duration of the smooth play of the 0TT live broadcast are detected, and when the 0TT live broadcast is detected, the sum of the durations is less than the first The duration threshold is determined, and when the duration of the smooth play of the 0TT live broadcast is greater than or equal to the second duration threshold, it is determined that the 0TT live broadcast has a play lag.

Optionally, the processor 1202 executes the instructions in the memory 1203, and is configured to determine a first fast play amplitude, so that the playback device adjusts the play rate according to the first fast play amplitude, and according to the adjusted play rate. After the 0TT live broadcast is performed, according to the play status of the 0TT live broadcast, the play rate is determined to be a preset play rate, so that the playback device continues the 0TT live broadcast at the preset play rate.

Optionally, the processor 1202 executes the instruction in the memory 1203, where the playback rate is determined to be the preset playback rate when the sum of the durations of the 0TT live broadcasts is zero; or, when the 0TT is broadcasted When the jam occurs again, the playback rate is determined to be the preset playback rate; or, when it is detected that the current network transmission rate is less than the current playback rate, the playback rate is determined to be the preset playback rate.

Optionally, the processor 1202 executes the instruction in the memory 1203, specifically, when Rp<Rt <Rp (l+Ya), determining the first fast play amplitude according to a=( Rt−Rp ) /Rp; When Rt Rp (l+Ya), the first fast play amplitude is determined according to a=Ya; wherein a is the first fast play amplitude, Rp is the play rate, R t is the network transmission rate, and Ya is the The first preset threshold corresponding to the first fast play amplitude.

Optionally, the processor 1202 executes the instruction in the memory 1203, and is configured to determine a second fast play amplitude according to the network transmission rate and the play rate, so that the playback device determines the play rate according to the second fast play amplitude, The determined playback rate continues with the 0TT live broadcast.

In the embodiment of the present invention, the detecting device 1200 may be located at the 0TT video server device, or the detecting device 1200 may be located at the terminal device, or the detecting device 1200 may be located at the network device.

The apparatus for detecting the live broadcast of the 0TT in the embodiment of the present invention acquires the network transmission rate and the playback rate of the 0TT live broadcast when the playback delay of the 0TT live broadcast is detected, if the playback rate is greater than zero and the network transmission speed If the rate is greater than the playback rate, the first fast play range is determined according to the network transmission rate and the play rate, the play rate is adjusted according to the first fast play range, and the 0TT live broadcast is performed according to the adjusted play rate. Therefore, the fast play range is adjusted according to the network transmission rate and the play rate, the lag of the 0TT live broadcast is repaired, and the 0TT live content jump is avoided, and the continuity of the 0TT live broadcast can be enhanced to improve the user experience. As shown in FIG. 13 , an embodiment of the present invention provides another 0TT live broadcast device 1 300. The playback device may include: a bus 1 304 and an interface 1 301 connected to the bus 1 304, a processor 1 302, and a memory 1 303, where:

The interface 1 301 is configured to receive a first fast play amplitude sent by the detecting device, where the first fast play amplitude is determined by the detecting device by:

The detecting device detects the network transmission rate and the playback rate of the 0TT direct broadcast when the 0TT live broadcast has a play lag; if the play rate is greater than zero and the network transmission rate is greater than the play rate, it is determined according to the network transmission rate and the play rate. For the method of determining the first fast play range, refer to the embodiment shown in FIG. 1 , and details are not described herein again.

The memory 1 303 is for storing instructions, and the processor 1 302 executes instructions in the memory 1 303 for performing the 0TT live broadcast according to the first fast play amplitude.

Specifically, the playback rate is determined according to the first fast play amplitude, and the 0TT live broadcast is performed according to the determined play rate.

Correspondingly, the processor 1 302 executes the instruction in the memory 1 303 to adjust the play rate according to the first fast play amplitude, and performs the 0TT live broadcast according to the adjusted play rate.

In the embodiment of the present invention, the playback device 1300 may be located at the 0TT video server device, or the playback device 1300 may be located at the terminal device, or the playback device 1300 may be located at the network device.

The playback device of the 0TT live broadcast according to the embodiment of the present invention adjusts the play rate according to the first fast play range according to the first fast play range determined by the network transmission rate and the play rate when the receiving detection device detects that the 0TT live broadcast has a play lag, and The 0TT live broadcast is performed according to the adjusted playback rate. Therefore, the fast playback range is adjusted according to the network transmission rate and the playback rate, and the lag of the 0TT live broadcast is fixed. After that, OTT live content skipping is avoided, and the continuity of the live broadcast can be enhanced to improve the user experience. It should be noted that, in the foregoing description, the device provided by the foregoing embodiment is only exemplified by the division of the foregoing functional modules. In actual applications, the function distribution may be completed by different functional modules according to requirements, that is, the device is The internal structure is divided into function modules for dialing to complete all or part of the above functions. In addition, the device provided by the foregoing embodiment is in the same concept as the corresponding method, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.

A person skilled in the art can clearly understand that, for the convenience and the cleaning of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

A person skilled in the art can understand that all or part of the steps of implementing the foregoing method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing storage medium includes: a read-only memory (referred to as a read-only memory in English, a ROM called a ROM), a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the beneficial effects of the present invention and the present invention are described in detail with reference to the foregoing embodiments, It should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or replacements do not deviate from the essence of the corresponding technical solutions. Scope of the claims.

Claims

claims

1. A method of over-the-top OTT live broadcast, which is characterized by including:

When it is detected that the OTT live broadcast has a playback lag, obtain the network transmission rate corresponding to the OTT live broadcast and the playback rate of the OTT live broadcast;

If the playback rate is greater than zero and the network transmission rate is greater than the playback rate, then a first fast playback amplitude is determined according to the network transmission rate and the playback rate, so as to adjust according to the first fast playback amplitude the playback rate, and perform the operation according to the adjusted playback rate

0TT live broadcast.

2. The method according to claim 1, wherein the detection of playback lag in the OTT live broadcast includes:

When it is detected that the sum of the stuck durations of the OTT live broadcast is greater than or equal to the first duration threshold, it is determined that there is a playback lag in the OTT live broadcast;

Or, when it is detected that the sum of the stuck durations of the OTT live broadcast is less than the first duration threshold and the smooth playback duration of the OTT live broadcast is greater than or equal to the second duration threshold, it is determined that the OTT live broadcast has a playback lag. .

3. The method according to claim 1 or 2, characterized in that, the first fast playback amplitude is determined so as to adjust the playback rate according to the first fast playback amplitude, and according to the adjusted playback rate After performing the 0TT live broadcast at the rate, it also includes:

According to the playback status of the OTT live broadcast, it is determined to continue the OTT live broadcast at a preset playback rate.

4. The method according to claim 3, characterized in that, according to the playback status of the OTT live broadcast, determining to continue the OTT live broadcast at a preset playback rate includes:

When it is detected that the sum of the stuck durations of the OTT live broadcast is zero, it is determined to continue the OTT live broadcast at the preset playback rate;

Or, when it is detected that the OTT live broadcast is stuck again, determine to continue the OTT live broadcast at the preset playback rate; Or, when it is detected that the current network transmission rate is less than the current playback rate, it is determined to continue the OTT live broadcast at the preset playback rate.

5. The method according to any one of claims 1 to 4, wherein determining the first fast playback amplitude according to the network transmission rate and the playback rate includes:

When Rp<Rt<Rp (l+Ya), the first fast playback amplitude is determined according to a= (Rt-Rp)/Rp; when Rt ^Rp (1+Ya), the first rapid playback amplitude is determined according to a=Ya The first rapid playback range;

Wherein, a is the first fast playback amplitude, Rp is the playback rate, Rt is the network transmission rate, and Ya is the first preset threshold corresponding to the first fast playback amplitude.

6. The method according to any one of claims 1 to 5, characterized in that, after performing the OTT live broadcast according to the first fast playback amplitude, it further includes:

Determine the second fast playback amplitude based on the network transmission rate and playback rate;

Continue the OTT live broadcast according to the second fast playback amplitude;

When the second fast playback amplitude is greater than the second preset threshold, the second preset threshold is used as the second fast playback amplitude.

7. The method according to any one of claims 1 to 6, characterized in that, when the first rapid playback amplitude is greater than a first preset threshold, the first preset threshold is used as the The first rapid playback range.

8. A detection device for over-the-top OTT live broadcast, characterized by including:

Detection unit, used to detect whether there is playback lag in 0TT live broadcast;

An acquisition unit, configured to obtain the network transmission rate corresponding to the OTT live broadcast and the playback rate of the OTT live broadcast when the detection unit detects that the OTT live broadcast has a playback lag;

Determining unit, configured to determine the first fast playback amplitude according to the network transmission rate and the playback rate if the playback rate is greater than zero and the network transmission rate is greater than the playback rate, so that the playback device can The first fast playback amplitude adjusts the playback rate, and the OTT live broadcast is performed according to the adjusted playback rate.

9. The device according to claim 8, wherein the detection unit detecting whether there is a playback lag in the OTT live broadcast includes:

Detect the jamming duration of the OTT live broadcast. When it is detected that the sum of the jamming durations of the OTT live broadcast is greater than or equal to the first duration threshold, it is determined that there is a playback lag in the OTT live broadcast;

Or, detect the stuck duration of the OTT live broadcast and the smooth playback duration of the OTT live broadcast, when it is detected that the sum of the stuck duration of the OTT live broadcast is less than the first duration threshold, and the OTT live broadcast When the duration of smooth playback is greater than or equal to the second duration threshold, it is determined that the OTT live broadcast has a playback lag.

10. The device according to claim 8 or 9, characterized in that the determining unit is further configured to determine the first fast playback amplitude, so that the playback device adjusts the first fast playback amplitude according to the first fast playback amplitude. After the OTT live broadcast is performed according to the adjusted playback rate, the playback rate is determined to be the preset playback rate according to the playback status of the OTT live broadcast, so that the playback device performs the OTT live broadcast at the preset playback rate. Set the playback rate to continue the 0TT live broadcast.

11. The device according to claim 10, wherein the determining unit determining that the playback rate is the preset playback rate includes:

When the sum of the jam durations of the OTT live broadcast is zero, the playback rate is determined to be the preset playback rate;

Or, when the OTT live broadcast freezes again, determine that the playback rate is the preset playback rate;

Or, when it is detected that the current network transmission rate is less than the current playback rate, the playback rate is determined to be the preset playback rate.

12. The device according to any one of claims 8 to 11, wherein the determining unit determines the first fast playback amplitude according to the network transmission rate and the playback rate: when Rp<Rt< When Rp (l+Ya), the first fast playback amplitude is determined according to a= (Rt-Rp)/Rp; when Rt Rp (l+Ya), the first fast playback amplitude is determined according to a=Ya; Wherein, a is the first fast playback amplitude, Rp is the playback rate, Rt is the network transmission rate, and Ya is the first preset threshold corresponding to the first fast playback amplitude.

1 3. A playback device for over-the-top OTT live broadcast, which is characterized by including:

The receiving unit is configured to receive the fast playback amplitude sent by the detection device. When the detection device detects that the OTT live broadcast has a playback lag, obtain the network transmission rate corresponding to the OTT live broadcast and the playback rate of the OTT live broadcast, After it is determined that the playback rate is greater than zero and the network transmission rate is greater than the playback rate, the rapid playback amplitude is determined based on the network transmission rate and the playback rate;

A playback unit, configured to adjust the playback rate according to the fast playback amplitude, and perform the OTT live broadcast according to the adjusted playback rate.

14. The device according to claim 13, characterized in that the playback device is located in an OTT video server device, or the playback device is located in a terminal device, or the playback device is located in a network device.

15. An over-the-top OTT live broadcast system, characterized by including a detection device and a playback device, wherein

The detection device is used to detect whether there is a playback lag in the OTT live broadcast. When it is detected that the OTT live broadcast has a playback lag, obtain the network transmission rate corresponding to the OTT live broadcast and the playback rate of the OTT live broadcast. If the playback rate is greater than 0 and the network transmission rate is greater than the playback rate, then determine the first fast playback amplitude according to the network transmission rate and the playback rate, and send the first fast playback amplitude to the playback device;

The playback device is configured to receive the first fast playback amplitude sent by the detection device, adjust the playback rate according to the first fast playback amplitude, and perform the OTT according to the adjusted playback rate. live streaming.

16. The system according to claim 15, characterized in that the detection device detecting whether there is a playback lag in the OTT live broadcast includes:

Or, detect the lag duration of the OTT live broadcast and the smooth playback duration of the OTT live broadcast. Duration, when it is detected that the sum of the stuck durations of the OTT live broadcast is less than the first duration threshold and the smooth playback duration of the OTT live broadcast is greater than or equal to the second duration threshold, it is determined that the OTT live broadcast exists Playback lags.

17. The system according to claim 15 or 16, characterized in that:

The detection device is also used to determine, according to the playback status of the OTT live broadcast, to continue the OTT live broadcast at a preset playback rate, and to notify the playback device of the live broadcast to continue the OTT live broadcast at a preset playback rate. .

18. The system according to claim 17, wherein the detection device determines to continue the OTT live broadcast at a preset playback rate including:

Or, when it is detected that the OTT live broadcast is stuck again, determine to continue the OTT live broadcast at the preset playback rate;

Or, when it is detected that the current network transmission rate is less than the current playback rate, it is determined to continue the OTT live broadcast at the preset playback rate.

19. The system according to any one of claims 15 to 18, characterized in that, the detection device determines the first fast playback amplitude according to the network transmission rate and the playback rate: when Rp<Rt< When Rp (l+Ya), the first fast playback amplitude is determined according to a= (Rt-Rp) /Rp; when Rt ^Rp (1+Ya), the first fast playback amplitude is determined according to a=Ya ;

20. The system according to any one of claims 15 to 19, characterized in that the detection device is located in an OTT video server device, or in a terminal device, or in a network device;

The playback device is located in the OTT video server device, or in the terminal device, or in the network device.