CN113141525B - Online video cut-off continuous playing method and system - Google Patents

Online video cut-off continuous playing method and system Download PDF

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Publication number
CN113141525B
CN113141525B CN202110279319.2A CN202110279319A CN113141525B CN 113141525 B CN113141525 B CN 113141525B CN 202110279319 A CN202110279319 A CN 202110279319A CN 113141525 B CN113141525 B CN 113141525B
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video
audio
frame
network
top box
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CN113141525A (en
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陈荣观
黄永
罗海斌
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Fujian Xingwang Intelligent Technology Co ltd
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Fujian Xingwang Intelligent Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23602Multiplexing isochronously with the video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41Structure of client; Structure of client peripherals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643Communication protocols
    • H04N21/6437Real-time Transport Protocol [RTP]

Abstract

The invention provides a method and a system for on-line video cut-off continuous playing in the technical field of set top boxes, wherein the method comprises the following steps: step S10, the set-top box acquires an online video; step S20, the set-top box disassembles the online video into an audio packet and a video packet; step S30, the set top box decodes the audio packets and the video packets respectively to obtain audio frames and video frames; step S40, the set-top box sets a proportional threshold, synchronizes each audio frame and video frame to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold, if not, plays the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering the step S50; step S50, monitoring whether the network is recovered, if yes, playing the synchronous video based on the playing progress; if not, the network is continuously monitored. The invention has the advantages that: the realization is carried out the continuous broadcast of cutout to online video, avoids black screen and card frame, and then very big promotion user experience.

Description

Online video cut-off continuous playing method and system
Technical Field
The invention relates to the technical field of set top boxes, in particular to a method and a system for on-line video cut-off continuous playing.
Background
A set-top box is a device that connects a television set to an external signal source and can convert compressed digital signals into television content for display on the television set. With the continuous improvement of video quality, the requirement on network quality is also continuously improved, and higher requirements are placed on the smoothness and stability of video playing.
However, in the process of playing an online video, when a network is abnormal, the conventional set-top box may cause a problem that a television is blacked or a card is stuck in a certain frame and does not continue to play, which seriously affects user experience. Therefore, how to provide a method and a system for on-line video break-off continuous playing to realize the break-off continuous playing of the on-line video and avoid the black screen and the card frame becomes a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a system for on-line video cut-off continuous playing, which are used for realizing the cut-off continuous playing of an on-line video and avoiding the black screen and the frame blocking.
In a first aspect, the present invention provides an online video cut-off continuous playing method, including the following steps:
step S10, the set-top box acquires an online video to be played;
step S20, the set-top box disassembles the online video into an audio packet and a video packet;
step S30, the set-top box creates an audio decoding thread and a video decoding thread, and the audio decoding thread and the video decoding thread are used for respectively decoding the audio packet and the video packet to obtain an audio frame and a video frame;
step S40, the set-top box sets a proportional threshold, synchronizes each audio frame and each video frame to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold, if not, plays the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering the step S50;
step S50, monitoring whether the network is recovered, if yes, playing the synchronous video based on the playing progress; if not, the network is continuously monitored.
Further, the step S20 is specifically:
the set top box disassembles the online video into audio packets and video packets in real time by using FFMPEG, stores each audio packet into an audio packet queue, and stores each video packet into a video packet queue.
Further, the step S30 is specifically:
the set top box creates an audio decoding thread and a video decoding thread;
sequentially decoding each audio packet in the audio packet queue by using the audio decoding thread to obtain an audio frame, and storing the audio frame into an audio frame queue;
and sequentially decoding each video packet in the video packet queue by using the video decoding thread to obtain a video frame, and storing the video frame into the video frame queue.
Further, the step S40 is specifically:
the set top box sets a proportional threshold, based on timestamps and sequence numbers carried by the audio frames and the video frames, the set top box synchronizes on the basis of the audio frames to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold or not based on the synchronous video and the online video, and if not, plays the synchronous video; if yes, the current network is abnormal, the current playing progress is recorded, the playing picture freezes the last frame before the network abnormality, and the process goes to step S50.
Further, the step S50 is specifically:
the set-top box continuously carries out network stream pulling through an HLS protocol, an RTSP protocol or an RTP protocol, judges whether the network stream pulling is successful, if so, indicates that the network is recovered, and plays a synchronous video based on the playing progress; if not, the network is not recovered, and the network pull flow operation is continuously executed.
In a second aspect, the present invention provides an online video stream interruption and continuous playing system, including the following modules:
the online video acquisition module is used for the set top box to acquire an online video to be played;
the online video disassembling module is used for the set top box to disassemble the online video into an audio packet and a video packet;
the decoding module is used for the set top box to create an audio decoding thread and a video decoding thread, and the audio decoding thread and the video decoding thread are used for respectively decoding the audio packet and the video packet to obtain an audio frame and a video frame;
the frame dropping rate checking module is used for setting a proportional threshold value for the set top box, synchronizing each audio frame and each video frame to obtain a synchronous video, judging whether the frame dropping rate of the synchronous video is greater than the proportional threshold value or not, and if not, playing the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering a network monitoring module;
the network monitoring module is used for monitoring whether the network is recovered or not, and if yes, the synchronous video is played based on the playing progress; if not, the network is continuously monitored.
Further, the online video disassembling module specifically includes:
the set top box disassembles the online video into audio packets and video packets in real time by using FFMPEG, stores each audio packet into an audio packet queue, and stores each video packet into a video packet queue.
Further, the decoding module specifically includes:
the set top box creates an audio decoding thread and a video decoding thread;
sequentially decoding each audio packet in the audio packet queue by using the audio decoding thread to obtain an audio frame, and storing the audio frame into an audio frame queue;
and sequentially decoding each video packet in the video packet queue by using the video decoding thread to obtain a video frame, and storing the video frame into the video frame queue.
Further, the frame dropping rate verification module specifically includes:
the set top box sets a proportional threshold, based on timestamps and sequence numbers carried by the audio frames and the video frames, the set top box synchronizes on the basis of the audio frames to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold or not based on the synchronous video and the online video, and if not, plays the synchronous video; if yes, the current network is abnormal, the current playing progress is recorded, the playing picture is frozen at the last frame before the network is abnormal, and the network monitoring module is accessed.
Further, the network monitoring module specifically includes:
the set-top box continuously carries out network stream pulling through an HLS protocol, an RTSP protocol or an RTP protocol, judges whether the network stream pulling is successful, if so, indicates that the network is recovered, and plays a synchronous video based on the playing progress; if not, the network is not recovered, and the network pull flow operation is continuously executed.
The invention has the advantages that:
judging whether the frame dropping rate of the synchronous video is greater than a set proportion threshold value or not, if so, indicating that the current network is abnormal, recording the current playing progress, and freezing the last frame of a playing picture before the network is abnormal, so as to avoid direct black screen display; and then, through an HLS protocol, an RTSP protocol or an RTP protocol, the network streaming is continuously carried out to monitor whether the network is recovered, and the synchronous video is continuously played based on the playing progress when the network is recovered, namely, the synchronous video is continuously played from the last frame of the fixed frame, so that the phenomenon of frame blocking is avoided, the on-line video is finally cut off and continuously played, the black screen and the frame blocking are avoided, and the user experience is greatly improved.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flow chart of an on-line video break resume method of the present invention.
Fig. 2 is a flow chart of an on-line video cut-off continuous playing method according to the present invention.
Fig. 3 is a schematic structural diagram of an online video cut-off continuous playing system according to the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the method comprises the steps of judging whether the frame dropping rate of a synchronous video is larger than a set proportion threshold value or not, if so, indicating that the network is abnormal, recording the current playing progress, freezing the last frame of a playing picture before the network is abnormal, then continuously carrying out network pull monitoring to judge whether the network is recovered or not, and continuously playing the synchronous video based on the playing progress during the network recovery so as to realize the cutoff continuous playing of the online video and avoid the black screen and the frame blocking.
Referring to fig. 1 to fig. 3, a preferred embodiment of an online video stream break resuming method according to the present invention includes the following steps:
step S10, after receiving the playing instruction, the set-top box acquires the online video to be played in real time;
step S20, the set-top box disassembles the online video into an audio packet and a video packet;
step S30, the set top box creates an audio decoding thread and a video decoding thread, and the audio decoding thread and the video decoding thread are used for respectively decoding the audio packets and the video packets to obtain audio frames and video frames; the audio packets and the video packets are decoded through two independent threads, so that the decoding efficiency can be greatly improved;
step S40, the set-top box sets a proportional threshold, synchronizes each audio frame and each video frame to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold, if not, plays the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering the step S50;
step S50, monitoring whether the network is recovered, if yes, playing the synchronous video based on the playing progress; if not, the network is continuously monitored.
The step S20 specifically includes:
the set top box disassembles the online video into audio packets and video packets in real time by using FFMPEG, stores each audio packet into an audio packet queue, and stores each video packet into a video packet queue. FFMPEG is a suite of open-source computer programs that can be used to record, convert digital audio, video, and convert them into streams.
The step S30 specifically includes:
the set top box creates an audio decoding thread and a video decoding thread;
sequentially decoding each audio packet in the audio packet queue by using the audio decoding thread to obtain an audio frame, and storing the audio frame into an audio frame queue;
and sequentially decoding each video packet in the video packet queue by using the video decoding thread to obtain a video frame, and storing the video frame into the video frame queue. The audio and video frames both carry time stamps and sequential numbering.
The step S40 specifically includes:
the set top box sets a proportional threshold, based on timestamps and sequence numbers carried by the audio frames and the video frames, the set top box synchronizes on the basis of the audio frames to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold or not based on the synchronous video and the online video, and if not, plays the synchronous video; if yes, it indicates that the current network is abnormal, records the current playing progress (playing status), and the playing screen freezes the last frame before the network abnormality, and then the process goes to step S50. The playing progress is the current playing frame number.
The frame dropping rate calculation formula is as follows: (data amount of online video-data amount of synchronized video)/data amount of online video.
The audio frame and the video frame are synchronized as follows:
and synchronizing the audio frames and the video frames with the sequence numbers of 1, calculating the time length of the audio frames to be 5 seconds based on the time stamps carried by the audio frames, and calculating the time length of the video frames to be 6 seconds based on the time stamps carried by the video frames, so that the time length of the video frames is compressed to be 5 seconds, and further the audio frames are synchronized with the corresponding audio frames.
The step S50 specifically includes:
the set-top box continuously carries out network stream pulling through an HLS protocol, an RTSP protocol or an RTP protocol, judges whether the network stream pulling is successful, if so, indicates that the network is recovered, and plays a synchronous video based on the playing progress; if not, the network is not recovered, and the network pull flow operation is continuously executed. The HLS protocol needs to record the position of ts fragments, and the RTSP protocol needs to record parameters such as timestamps.
The invention discloses a preferred embodiment of an online video cut-off continuous playing system, which comprises the following modules:
the online video acquisition module is used for acquiring an online video to be played in real time by the set top box after receiving the playing instruction;
the online video disassembling module is used for the set top box to disassemble the online video into an audio packet and a video packet;
the decoding module is used for the set top box to create an audio decoding thread and a video decoding thread, and the audio decoding thread and the video decoding thread are used for respectively decoding the audio packet and the video packet to obtain an audio frame and a video frame; the audio packets and the video packets are decoded through two independent threads, so that the decoding efficiency can be greatly improved;
the frame dropping rate checking module is used for setting a proportional threshold value for the set top box, synchronizing each audio frame and each video frame to obtain a synchronous video, judging whether the frame dropping rate of the synchronous video is greater than the proportional threshold value or not, and if not, playing the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering a network monitoring module;
the network monitoring module is used for monitoring whether the network is recovered or not, and if yes, the synchronous video is played based on the playing progress; if not, the network is continuously monitored.
The online video disassembling module specifically comprises:
the set top box disassembles the online video into audio packets and video packets in real time by using FFMPEG, stores each audio packet into an audio packet queue, and stores each video packet into a video packet queue. FFMPEG is a suite of open-source computer programs that can be used to record, convert digital audio, video, and convert them into streams.
The decoding module specifically comprises:
the set top box creates an audio decoding thread and a video decoding thread;
sequentially decoding each audio packet in the audio packet queue by using the audio decoding thread to obtain an audio frame, and storing the audio frame into an audio frame queue;
and sequentially decoding each video packet in the video packet queue by using the video decoding thread to obtain a video frame, and storing the video frame into the video frame queue. The audio and video frames both carry time stamps and sequential numbering.
The frame drop rate checking module specifically comprises:
the set top box sets a proportional threshold, based on timestamps and sequence numbers carried by the audio frames and the video frames, the set top box synchronizes on the basis of the audio frames to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold or not based on the synchronous video and the online video, and if not, plays the synchronous video; if yes, the current network is abnormal, the current playing progress (playing state) is recorded, the playing picture freezes the last frame before the network is abnormal, and the network monitoring module is accessed. The playing progress is the current playing frame number.
The frame dropping rate calculation formula is as follows: (data amount of online video-data amount of synchronized video)/data amount of online video.
The audio frame and the video frame are synchronized as follows:
and synchronizing the audio frames and the video frames with the sequence numbers of 1, calculating the time length of the audio frames to be 5 seconds based on the time stamps carried by the audio frames, and calculating the time length of the video frames to be 6 seconds based on the time stamps carried by the video frames, so that the time length of the video frames is compressed to be 5 seconds, and further the audio frames are synchronized with the corresponding audio frames.
The network monitoring module specifically comprises:
the set-top box continuously carries out network stream pulling through an HLS protocol, an RTSP protocol or an RTP protocol, judges whether the network stream pulling is successful, if so, indicates that the network is recovered, and plays a synchronous video based on the playing progress; if not, the network is not recovered, and the network pull flow operation is continuously executed. The HLS protocol needs to record the position of the ts fragment, and the RTSP protocol needs to record parameters such as a time stamp.
In summary, the invention has the advantages that:
judging whether the frame dropping rate of the synchronous video is greater than a set proportion threshold value or not, if so, indicating that the current network is abnormal, recording the current playing progress, and freezing the last frame of a playing picture before the network is abnormal, so as to avoid direct black screen display; and then, through an HLS protocol, an RTSP protocol or an RTP protocol, the network streaming is continuously carried out to monitor whether the network is recovered, and the synchronous video is continuously played based on the playing progress when the network is recovered, namely, the synchronous video is continuously played from the last frame of the fixed frame, so that the phenomenon of frame blocking is avoided, the on-line video is finally cut off and continuously played, the black screen and the frame blocking are avoided, and the user experience is greatly improved.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.

Claims (10)

1. An online video cut-off continuous playing method is characterized in that: the method comprises the following steps:
step S10, the set-top box acquires an online video to be played;
step S20, the set-top box disassembles the online video into an audio packet and a video packet;
step S30, the set-top box creates an audio decoding thread and a video decoding thread, and the audio decoding thread and the video decoding thread are used for respectively decoding the audio packet and the video packet to obtain an audio frame and a video frame;
step S40, the set-top box sets a proportional threshold, synchronizes each audio frame and each video frame to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold, if not, plays the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering the step S50;
step S50, monitoring whether the network is recovered, if yes, playing the synchronous video based on the playing progress; if not, the network is continuously monitored.
2. The method of claim 1, wherein the method further comprises: the step S20 specifically includes:
the set top box disassembles the online video into audio packets and video packets in real time by using FFMPEG, stores each audio packet into an audio packet queue, and stores each video packet into a video packet queue.
3. An on-line video break resume method as claimed in claim 2, wherein: the step S30 specifically includes:
the set top box creates an audio decoding thread and a video decoding thread;
sequentially decoding each audio packet in the audio packet queue by using the audio decoding thread to obtain an audio frame, and storing the audio frame into an audio frame queue;
and sequentially decoding each video packet in the video packet queue by using the video decoding thread to obtain a video frame, and storing the video frame into the video frame queue.
4. An on-line video break resume method as claimed in claim 1, wherein: the step S40 specifically includes:
the set top box sets a proportional threshold, based on timestamps and sequence numbers carried by the audio frames and the video frames, the set top box synchronizes on the basis of the audio frames to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold or not based on the synchronous video and the online video, and if not, plays the synchronous video; if yes, the current network is abnormal, the current playing progress is recorded, the playing picture freezes the last frame before the network abnormality, and the process goes to step S50.
5. An on-line video break resume method as claimed in claim 1, wherein: the step S50 specifically includes:
the set top box continuously carries out network stream pulling through an HLS protocol, an RTSP protocol or an RTP protocol, judges whether the network stream pulling is successful, if so, indicates that the network is recovered, and plays the synchronous video based on the playing progress; if not, the network is not recovered, and the network pull flow operation is continuously executed.
6. An online video cut-off continuous playing system, characterized in that: the system comprises the following modules:
the online video acquisition module is used for the set top box to acquire an online video to be played;
the online video disassembling module is used for the set top box to disassemble the online video into an audio packet and a video packet;
the decoding module is used for the set top box to create an audio decoding thread and a video decoding thread, and the audio decoding thread and the video decoding thread are used for respectively decoding the audio packet and the video packet to obtain an audio frame and a video frame;
the frame dropping rate checking module is used for setting a proportional threshold value for the set top box, synchronizing each audio frame and each video frame to obtain a synchronous video, judging whether the frame dropping rate of the synchronous video is greater than the proportional threshold value or not, and if not, playing the synchronous video; if yes, indicating that the current network is abnormal, recording the current playing progress, and entering a network monitoring module;
the network monitoring module is used for monitoring whether the network is recovered or not, and if yes, the synchronous video is played based on the playing progress; if not, the network is continuously monitored.
7. An on-line video break-off resume system as claimed in claim 6, wherein: the online video disassembling module specifically comprises:
the set top box disassembles the online video into audio packets and video packets in real time by using FFMPEG, stores each audio packet into an audio packet queue, and stores each video packet into a video packet queue.
8. An on-line video break-off resume system as claimed in claim 7, wherein: the decoding module specifically comprises:
the set top box creates an audio decoding thread and a video decoding thread;
sequentially decoding each audio packet in the audio packet queue by using the audio decoding thread to obtain an audio frame, and storing the audio frame into an audio frame queue;
and sequentially decoding each video packet in the video packet queue by using the video decoding thread to obtain a video frame, and storing the video frame into the video frame queue.
9. An on-line video break-off resume system as claimed in claim 6, wherein: the frame drop rate checking module specifically comprises:
the set top box sets a proportional threshold, based on timestamps and sequence numbers carried by the audio frames and the video frames, the set top box synchronizes on the basis of the audio frames to obtain a synchronous video, judges whether the frame dropping rate of the synchronous video is greater than the proportional threshold or not based on the synchronous video and the online video, and if not, plays the synchronous video; if yes, the current network is abnormal, the current playing progress is recorded, the playing picture is frozen at the last frame before the network is abnormal, and the network monitoring module is accessed.
10. An on-line video break-off resume system as claimed in claim 6, wherein: the network monitoring module specifically comprises:
the set-top box continuously carries out network stream pulling through an HLS protocol, an RTSP protocol or an RTP protocol, judges whether the network stream pulling is successful, if so, indicates that the network is recovered, and plays a synchronous video based on the playing progress; if not, the network is not recovered, and the network pull flow operation is continuously executed.
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