CN105306969A - Adaptive streaming media processing system and method - Google Patents
Adaptive streaming media processing system and method Download PDFInfo
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- CN105306969A CN105306969A CN201510559442.4A CN201510559442A CN105306969A CN 105306969 A CN105306969 A CN 105306969A CN 201510559442 A CN201510559442 A CN 201510559442A CN 105306969 A CN105306969 A CN 105306969A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network 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
- H04N21/63—Control 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
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention provides an adaptive streaming media processing system and method. A sending end divides media files into multiple different quality grades, re-encodes media files to be sent into multiple files with different quality grades, divides the files into small segments with preset intervals to be sent segments by segments, selects the quality grade according to a sending speed determined according to a fed back network bandwidth, and switches to a media file satisfying the required quality grade to make full use network resources, and receiving end dynamically adjusts the size of a buffer area according to the quality grade of the received file, combines the received file segments and decodes the same for playing. Compared with the prior art, the adaptive streaming media processing system and method in the scheme of the invention can automatically adapt to higher change efficiency of network conditions, and thus better media view experience can be brought to users.
Description
Technical field
The present invention relates generally to Streaming Media treatment system and method, particularly based on the streaming media self-adapting processing method of mobile terminal.
Background technology
Now, the network bandwidth remains the maximum bottleneck of stream media system application, and in order to the deficiency of cope with network bandwidth, solution is placed in the improvement of Frame of Streaming Media System by many stream media systems.But in transmission, for identical video content, traditional stream media system adopts the video file of single code check to provide service, this rigid processing mode for all users mostly, have ignored the good partial mass of network performance or some periods.As shown in Figure 1, it is the network structure of a typical Video Applications system, research contents of the present invention, cast aside the network architecture that P2P, CDN etc. are complicated exactly, be absorbed in the transmission between discussion 2, therefore, network configuration is simpler, cast aside the interaction flow of the complexity such as NAT penetrates simultaneously, research work can be carried out under the prerequisite of direct communication between hypothesis 2.
Summary of the invention
First the present invention studies how streaming media files carries out multi code Rate of Chinese character, propose the partition strategy of media quality grade, when divided rank, the size of video file maximally can be reduced when ensureing play quality as far as possible, and on this basis to the organization and management scheme of the files in stream media through multi code Rate of Chinese character on disk, the audio/video frames that need send to the next one with the quick position realized when media content switches.
Next is the design of the method for measurement of available bandwidth, by adopting the congestion avoidance algorithm with delay early warning being suitable for Stream Media Application, and carries out Real-time Collection in conjunction with RTP/RTCP to the calculated factor of this algorithm, to obtain the current available network bandwidth.
On the basis realizing file multi code Rate of Chinese character and available bandwidth measurement, the key design transmission technology of multi code Rate of Chinese character file, when available network bandwidth changes, the video data content being switched to the code check adapted with available bandwidth is adaptively transmitted, to adapt to the network performance of constantly change, make to reach maximization to the quality of the utilance of the network bandwidth and the media content of selection transmission.
The Filters finally devising variable codec parameters plays link and dynamically reconnects mechanism, in Adaptive Transmission process when the resolution of play media file changes, the linkage length that have employed " the shortest " dynamically reconnects, and prevents because filters dynamically reconnects " pause sense " of generation.
Experimental result shows, the transmission technology of the multi code Rate of Chinese character file that the present invention proposes can realize the maximization of network bandwidth utilization and media play content quality, simultaneously compared with traditional solid size rate file transfer, when the network bandwidth is less, buffering can also be reduced wait for number of times and reduce the stand-by period, improve the service quality of stream media system, be therefore particularly suitable for the occasion of the network condition instability such as mobile terminal.
In order to solve the defect existed in prior art, the present invention proposes:
A kind of streaming media self-adapting processing method, is characterized in that,
Step is performed at transmitting terminal,
Steps A, transmitting terminal accepts Streaming Media and sends task, finds media file corresponding to media name and media quality grade according to task instruction at disk file administration module, and finds corresponding media file section according to the time started of task instruction;
Step B, reading media file section, carries out RTP encapsulation by media data;
Step C, sends the RTP bag after encapsulation;
Step D, measures current available bandwidth;
Step e, according to available bandwidth, by congestion avoidance algorithm, calculates next data package transmission velocity;
Step F, if not mating of next data package transmission velocity and current media credit rating, then searches the media file of the media quality grade of this transmission rate of coupling; If met, then rebound step B proceeds the process of next file section;
Step G, if found, be then switched to the media file of the media quality grade of this transmission rate applicable, rebound step B proceeds the process of next file section; If can not find, then recode to media file according to the media quality grade be applicable to, and be switched to the media file after recodification, rebound step B proceeds the process of next file section;
Receiving terminal performs step,
Step H, the packet after the RTP encapsulation that receiving end/sending end is sent;
Step I, to transmitting terminal feedback data packet so that computation bandwidth;
Step J, carries out decapsulation to the RTP bag received;
Step K, recombinates to the carrying out of the audio/video frames of the media data received;
Step L, by the audio/video frames of restructuring stored in buffering area;
Step M, creates filter link, plays with the decoding realizing audio/video frames;
Step N, rebound step H receives next packet.
Method as above, is characterized in that,
Also comprise in steps A:
Steps A 1, searches the media file corresponding to the media quality grade whether existing and specify, if existed, then selects this media file, if there is no then recode to media file according to the media quality grade of specifying according to task instruction.
Method as above, is characterized in that,
Also comprise in steps A:
Steps A 2, searches corresponding media file according to task instruction, and according to the partition strategy of media quality grade, is recoded by media file as the media file of multiple different media quality grade, comprising the media quality grade that task is specified.
Method as above, is characterized in that,
Also comprise in steps A:
Steps A 3, according to the time interval of presetting, is multiple file section by finding the media file cutting of media file or recodification.
Method as above, is characterized in that,
Also comprise in step G:
Step G1, when recoding to media file according to the media quality grade be applicable to, recodes the media file after cutting by file section one by one, generates the recodification media file after segmentation.
Method as above, is characterized in that,
Also comprise in step L,
Step L1, judges whether the media data quality grade received changes, and if so, then adjusts the size of buffering area.
Method as above, is characterized in that,
Also comprise in step M,
Step M1, judges whether the media data quality grade received changes, and if so, then reconnects filter link.
The invention allows for a kind of streaming media self-adapting treatment system, comprise transmitting terminal and receiving terminal, it is characterized in that:
Transmitting terminal comprises with lower module;
Disk file administration module, function is for upper strata provides the operation such as the inquiry of file, the reading of file content, and realizes the classification feature of file;
Media quality grade classification module, comprises the partition strategy of media quality grade, is preset with the parameter and standard of different quality grade;
Media file recodification module, realizes the recodification of media file;
Media file segmentation module, according to arranging segment media file being cut into fixing duration;
RTP bag Knockdown block, according to Real-time Transport Protocol, realizes the RTP encapsulating dress of the file section of media file;
Media quality grade handover module, when adjusting transmitting terminal transmission rate, reselects the media quality grade sent, and selects the media file of the credit rating being applicable to transmission rate to send;
Available bandwidth measurement module, calculates current available bandwidth size in real time by the packet of feedback;
Congestion control module, according to available bandwidth, by congestion avoidance algorithm, calculates next data package transmission velocity;
Media data sending module, realizes the transmission of media data packet to opposite end;
Receiving terminal comprises with lower module,
Media data reception module, realizes the reception of media data packet;
RTP bag deblocking module, carries out decapsulation to the RTP bag received;
Audio/video frames recombination module, realizes the reorganization operation of audio/video frames, for upper strata broadcast layer provides the acquisition interface of audio/video frames;
Player control interface module, for user provides friendly Play Control interface;
FilterGraph manager module, FilterGraph Manager Feature is to create filter link, plays with the decoding realizing audio/video frames, and what also realize when media quality grade switches filter link dynamically reconnects mechanism simultaneously;
Buffer management module, the credit rating according to receiving media file arranges buffer size, and the media file that buffer accepts arrives.
Accompanying drawing explanation
Fig. 1 system network architecture figure
Fig. 2 system function module figure
Embodiment
Streaming media self-adapting treatment system of the present invention comprises transmitting terminal and receiving terminal.
transmitting terminal
Transmitting terminal plays dominance effect in the transmission plan of multi code Rate of Chinese character file, its functional module comprises: disk file management, media quality grade classification, the switching of media content credit rating, available bandwidth measurement, media data send, and also can comprise report control command etc.
Disk file manages
The function of disk file management mainly for upper strata provides the operation such as the inquiry of file, the reading of file content, and realizes the classification feature of file.
The division of media quality grade
The content of this part comprises the partition strategy of media quality grade, is preset with the parameter and standard of different quality grade.
Media file is recoded
Realize the recodification of media file, need to increase income storehouse FFMPEG by means of outstanding media encoding and decoding.FFMPEG is a set of record, converted digital audio, video of can being used for, and can be translated into the computer program of increasing income of stream, and it includes audio/video code database libavcodec leading at present.FFmpeg develops under linux, but it can compile in the most of operating systems comprising Windows, this project is initiated by FabriceBellard, presided over by MichaelNiedermayer now, the mutual conversion between various video form can be realized easily, such as, the video avi etc. under shooting with video-corder can be changed into the flv form that present video website adopts.By means of FFMpeg storehouse, the media file core code algorithm of each grade that original media file is recoded to.
Media file segmentation
File fragmentation needs achieve the parsing to MP4 file by means of storehouse MPEG4IP, MPEG4IP storehouse of increasing income, and therefrom get each audio/video frames according to playing sequence, and according to arranging the segment being cut into fixing duration.
RTP package fills
And according to Real-time Transport Protocol, audio/video flow is carried out Hint operation, to realize the RTP encapsulating dress of audio/video frames.
Media content grade switches
In order to reach project target to be determined, prevent because network performance reduces and cause client buffer to be waited for, while transmitting terminal transmission rate is adjusted, requiring that the data content to sending reselects, selecting the media data content being applicable to current transmission rate to send.
When realizing media data content grade and switching, its switching point carries out the switching of content rating in units of section, before namely switching, first must pass all data contents of present segment, and then be switched to the data that other guide grade starts to send next section.Therefore, the time span of file fragmentation is unsuitable oversize, adopt herein 5 second duration partition strategy, when the feedback packet of carrying out RTCP is mutual, the time interval was also defined as 5 seconds.
Congestion control
In transmitting procedure, modified model TFRC congestion avoidance algorithm is adopted to the acquisition of current available bandwidth, select suitable media content grade according to current transmission rate, send data according to the transmission rate of regulation, the code check of the media content grade selected and transmission rate are adapted.
Available bandwidth measurement: calculated in real time by the RTCP bag of feedback, provide current available bandwidth size to congestion avoidance algorithm module;
Media data sends
Media data sends and realizes the transmission of media data to opposite end, adopts RTP/RTCP agreement to transmit media data content.Encode for video H264, its RTP is surrounded by three kinds of packing patterns, can reference in its rfc3984; And for audio A AC coding, the form that its RTP wraps can reference in its rfc3640.Realize the transmission of media data, by the section of calling parsing module, read each file section, each audio frequency and video RTP bag is parsed to each file section and sends to receiving terminal;
In transmitting procedure, often transmit a data segment, just judged whether according to current available bandwidth the media content grade needing to be switched to other, if needed, then be switched to the lower one piece of data that other grades read this grade to transmit, to adapt to the change of current network bandwidth.
receiving terminal
Receiving terminal main functional modules comprises: player control interface, media data reception, RTP bag deblocking, FilterGraph manager and reception buffer zone management.
Media data reception
The receiver module of media data realizes the reception of media data packet,
RTP bag deblocking
Decapsulation is carried out to the RTP bag received,
Audio/video frames is recombinated
Realize the reorganization operation of audio/video frames, for upper strata broadcast layer provides the acquisition interface of audio/video frames,
Player control interface
For user provides friendly Play Control interface, comprise the selection of media file, the selection of play quality, and the VCR such as broadcastings, time-out, stopping, dragging, maximization operates.
FilterGraph manager
FilterGraph Manager Feature is to create filter link, plays with the decoding realizing audio/video frames, and what also realize when media quality switches filter link dynamically reconnects mechanism simultaneously.
Buffer management
That brings due to Internet Transmission delays, generally before media start broadcasting, need through suitable buffer time, the target of buffer management, exactly the network data received is cushioned, to wait for that playing module obtains decoding data and plays, opening up great buffering area is the problem that buffer management module emphasis will solve, if adopt the buffering area of fixed size, often can not meet actual application needs, because the resolution of various flows media file, frame per second and pixel figure place etc. are all different, under formed objects buffer mode, to different media qualities, the audio frequency and video frame number that it can cushion has very large difference, in order to shield this difference, make media can smooth playing, need to arrange a kind of adaptive buffer size Adjusted Option.
adaptive processing method
Step is performed at transmitting terminal,
Steps A, transmitting terminal accepts Streaming Media and sends task, media file corresponding to media name and media quality grade is found at disk file administration module according to task instruction, due to the media file of different quality grade may be there is on disk, therefore need to find both to conform to according to task, such as film name is called " A plan ", and credit rating is " 720P ".If this film does not exist the credit rating that task is specified, and only has other grades, such as " 1080P ", then can point out user to reselect, also can adopt the mode of recoding immediately, generates the film meeting assigned quality level.Be no matter the film that originally exists or recode newly-generated film, all need to carry out segmentation.The initial time of broadcasting can be specified in task, then find corresponding file section according to initial time, and read transmission from this file section;
Step B, reading media file section, carries out RTP encapsulation by media data;
Step C, sends the RTP bag after encapsulation;
Step D, measures current available bandwidth; Measurement bandwidth need not be waited for that a bag distributes and just to start afterwards, and just can measure while transmission RTP bag, the measured value through a time period or multiple time point can carry out statistical average to obtain the average of the bandwidth in transmitting procedure;
Step e, according to available bandwidth, by congestion avoidance algorithm, calculates next data package transmission velocity;
Step F, if next data package transmission velocity does not mate with current media credit rating, then search the media file of the media quality grade of this transmission rate of coupling, common situation comprises transmission rate and declines serious, or transmission rate rises higher, then corresponding needs reduces media quality grade or improves media quality grade, and the corresponding relation of this transmission rate and media quality grade can be set in advance in media quality grade classification module, for inquiring about acquisition easily; If met, then rebound step B proceeds the process of next file section;
Step G, if found, be then switched to the media file of the media quality grade of this transmission rate applicable, rebound step B proceeds the process of next file section; If can not find, then according to the media quality grade be applicable to, media file is recoded, and be switched to the media file after recodification, here recodification just continues process after needing not to be the whole end-of-encode of whole file, but file section is recoded one by one, once recode, the file section terminated just can provide transmission, and continue the recodification of subsequent file section in the process of transmission, such delayed impact brought is less; Rebound step B proceeds the process of next file section.
Preferably, also comprise in steps A:
Steps A 1, searches the media file corresponding to the media quality grade whether existing and specify, if existed, then selects this media file, if there is no then recode to media file according to the media quality grade of specifying according to task instruction.Only can recode for the media quality grade of specifying when task starts, also can this media file be recoded for the credit rating of multiple support, there to be multiple available selection during follow-up quality of handoff grade simultaneously.
Preferably, also comprise in steps A:
Steps A 2, searches corresponding media file according to task instruction, and according to the partition strategy of media quality grade, is recoded by media file as the media file of multiple different media quality grade, comprising the media quality grade that task is specified.
Preferably, also comprise in steps A:
Steps A 3, according to the time interval of presetting, is multiple file section by finding the media file cutting of media file or recodification.The time interval of cutting file section can preset, typically such as 5 seconds file sections, and the situation for network condition instability suitably can reduce such as 3 seconds, can suitably increase under the environment of network stabilization.
Preferably, also comprise in step G:
Step G1, when recoding to media file according to the media quality grade be applicable to, recodes the media file after cutting by file section one by one, generates the recodification media file after segmentation.
Receiving terminal performs step,
Step H, the packet after the RTP encapsulation that receiving end/sending end is sent;
Step I, to transmitting terminal feedback data packet so that computation bandwidth;
Step J, carries out decapsulation to the RTP bag received;
Step K, recombinates to the carrying out of the audio/video frames of the media data received;
Step L, by the audio/video frames of restructuring stored in buffering area;
Step M, creates filter link, plays with the decoding realizing audio/video frames;
Step N, rebound step H receives next packet.
Preferably, also comprise in step L,
Step L1, judges whether the media data quality grade received changes, and if so, then adjusts the size of buffering area;
Preferably, also comprise in step M,
Step M1, judges whether the media data quality grade received changes, and if so, then reconnects filter link.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a streaming media self-adapting processing method, is characterized in that,
Step is performed at transmitting terminal,
Steps A, transmitting terminal accepts Streaming Media and sends task, finds media file corresponding to media name and media quality grade according to task instruction at disk file administration module, and finds corresponding media file section according to the time started of task instruction;
Step B, reading media file section, carries out RTP encapsulation by media data;
Step C, sends the RTP bag after encapsulation;
Step D, measures current available bandwidth;
Step e, according to available bandwidth, by congestion avoidance algorithm, calculates next data package transmission velocity;
Step F, if not mating of next data package transmission velocity and current media credit rating, then searches the media file of the media quality grade of this transmission rate of coupling; If met, then rebound step B proceeds the process of next file section;
Step G, if found, be then switched to the media file of the media quality grade of this transmission rate applicable, rebound step B proceeds the process of next file section; If can not find, then recode to media file according to the media quality grade be applicable to, and be switched to the media file after recodification, rebound step B proceeds the process of next file section;
Receiving terminal performs step,
Step H, the packet after the RTP encapsulation that receiving end/sending end is sent;
Step I, to transmitting terminal feedback data packet so that computation bandwidth;
Step J, carries out decapsulation to the RTP bag received;
Step K, recombinates to the carrying out of the audio/video frames of the media data received;
Step L, by the audio/video frames of restructuring stored in buffering area;
Step M, creates filter link, plays with the decoding realizing audio/video frames;
Step N, rebound step H receives next packet.
2. the method for claim 1, is characterized in that,
Also comprise in steps A:
Steps A 1, searches the media file corresponding to the media quality grade whether existing and specify, if existed, then selects this media file, if there is no then recode to media file according to the media quality grade of specifying according to task instruction.
3. the method for claim 1, is characterized in that,
Also comprise in steps A:
Steps A 2, searches corresponding media file according to task instruction, and according to the partition strategy of media quality grade, is recoded by media file as the media file of multiple different media quality grade, comprising the media quality grade that task is specified.
4. the method for claim 1, is characterized in that,
Also comprise in steps A:
Steps A 3, according to the time interval of presetting, is multiple file section by finding the media file cutting of media file or recodification.
5. the method as described in one of claim 1-4, is characterized in that,
Also comprise in step G:
Step G1, when recoding to media file according to the media quality grade be applicable to, recodes the media file after cutting by file section one by one, generates the recodification media file after segmentation.
6. the method as described in one of claim 1-4, is characterized in that,
Also comprise in step L,
Step L1, judges whether the media data quality grade received changes, and if so, then adjusts the size of buffering area.
7. the method as described in one of claim 1-4, is characterized in that,
Also comprise in step M,
Step M1, judges whether the media data quality grade received changes, and if so, then reconnects filter link.
8. a streaming media self-adapting treatment system, comprises transmitting terminal and receiving terminal, it is characterized in that:
Transmitting terminal comprises with lower module;
Disk file administration module, function is for upper strata provides the operation such as the inquiry of file, the reading of file content, and realizes the classification feature of file;
Media quality grade classification module, comprises the partition strategy of media quality grade, is preset with the parameter and standard of different quality grade;
Media file recodification module, realizes the recodification of media file;
Media file segmentation module, according to arranging segment media file being cut into fixing duration;
RTP bag Knockdown block, according to Real-time Transport Protocol, realizes the RTP encapsulating dress of the file section of media file;
Media quality grade handover module, when adjusting transmitting terminal transmission rate, reselects the media quality grade sent, and selects the media file of the credit rating being applicable to transmission rate to send;
Available bandwidth measurement module, calculates current available bandwidth size in real time by the packet of feedback;
Congestion control module, according to available bandwidth, by congestion avoidance algorithm, calculates next data package transmission velocity;
Media data sending module, realizes the transmission of media data packet to opposite end;
Receiving terminal comprises with lower module,
Media data reception module, realizes the reception of media data packet;
RTP bag deblocking module, carries out decapsulation to the RTP bag received;
Audio/video frames recombination module, realizes the reorganization operation of audio/video frames, for upper strata broadcast layer provides the acquisition interface of audio/video frames;
Player control interface module, for user provides friendly Play Control interface;
FilterGraph manager module, FilterGraph Manager Feature is to create filter link, plays with the decoding realizing audio/video frames, and what also realize when media quality grade switches filter link dynamically reconnects mechanism simultaneously;
Buffer management module, the credit rating according to receiving media file arranges buffer size, and the media file that buffer accepts arrives.
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| CN106254963A (en) * | 2016-08-19 | 2016-12-21 | 熊安永 | A kind of method of real-time synchronization transmission AV signal |
| CN107645475A (en) * | 2016-07-22 | 2018-01-30 | 上海云熵网络科技有限公司 | File resource dissemination system and method in heterogeneous network |
| WO2018072729A1 (en) * | 2016-10-19 | 2018-04-26 | 中兴通讯股份有限公司 | Media stream transmitting and receiving method and device, system and video relay |
| CN108833350A (en) * | 2018-05-16 | 2018-11-16 | 武汉烽火凯卓科技有限公司 | A kind of data transmission method suitable for multiserver adaptive stream media system |
| CN108989740A (en) * | 2018-08-06 | 2018-12-11 | 北京数码视讯科技股份有限公司 | A kind of video conferencing system and method |
| WO2019227738A1 (en) * | 2018-05-29 | 2019-12-05 | 北京字节跳动网络技术有限公司 | Method and device for switching resolutions for playing back media file in webpage, and storage medium |
| CN110881018A (en) * | 2018-09-05 | 2020-03-13 | 北京开广信息技术有限公司 | Real-time receiving method and client of media stream |
| WO2022151381A1 (en) * | 2021-01-15 | 2022-07-21 | 华为技术有限公司 | Communication method and apparatus |
| CN115474063A (en) * | 2022-10-27 | 2022-12-13 | 中诚华隆计算机技术有限公司 | Streaming media back-end decoding method, device and storage medium |
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