CN105611395A - MP4 format video online play method and system thereof - Google Patents
MP4 format video online play method and system thereof Download PDFInfo
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- CN105611395A CN105611395A CN201510609763.0A CN201510609763A CN105611395A CN 105611395 A CN105611395 A CN 105611395A CN 201510609763 A CN201510609763 A CN 201510609763A CN 105611395 A CN105611395 A CN 105611395A
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4355—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reformatting operations of additional data, e.g. HTML pages on a television screen
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/85406—Content authoring involving a specific file format, e.g. MP4 format
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- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a MP4 format video online play method. The method comprises the following steps that a client receives requested MP4 format video data and corresponding description file information which are returned after a MP4 format video file online play request is sent to a server, wherein the description file information includes information needed for converting a MP4 format video file into a target format video file; the client generates a file header of a target format video according to the description file information and sends to a player of the client; the client converts the MP4 format video data into target format video data and sends to the player; and when playing the video, the player takes the target format video data generated after format conversion to play according to the file header of the target format video. By using the method, first buffer time of MP4 format video file online play is greatly shortened.
Description
Technical field
The application relates to video playback field, specifically, relates to a kind of MP4 format video and broadcasts onlineThe method and system of putting.
Background technology
At present, mobile terminal order video from internet multimedia is more and more extensive, and conventional videoThere is again various form. Video format just refer to the video data in video, voice data andThe mode that relevant information data is organized. Video data is all according to certain in storage and transmitting procedureSpecific form is realized, and different video format implementations is not identical yet. Present stage is commonly usedVideo format mainly contains FLV, MP4, HLS and TS etc.
MP4, full name MPEG-4Part14, is the multimedia computer File Format of a kind of MPEG-4 of use,Secondary shelves MP4 by name, to store digital message and digital video signal as main. MP4 be a set of for audio frequency, lookFrequently the compression and coding standard of information, by International Organization for standardization (ISO) and International Electrotechnical Commission (IEC)" dynamic image expert group " (MovingPictureExpertsGroup, i.e. MPEG) of subordinate formulates.
MP4 file format is an open video format, almost can be used for describing all mediaStructure, the media description in MP4 file is what to separate with media data, and the organizing also of media dataVery free, need to not arrange according to time sequencing, even media data can directly be quoted alternative document.Meanwhile, MP4 also supports Streaming Media, and MP4 is widely used in encapsulating h.264 video and AAC audio frequency at present,It is the representative of HD video.
General MP4 file the most important thing is two parts, and one is the video information with MP4 file headerPart, this inside preserve be video key message, comprise audio frequency and video in video file coded format,The resolution ratio of video, the sample rate of audio/video, sampling precision, channel number, each audio/video bagThe information such as size information and the corresponding timestamp of each audio/video bag, another part is actualMP4 format video data. The player of client in the time playing MP4 format video, can first ask withThe video information part of MP4 file header.
Adopt the Video processing of MP4 form to there is following benefit:
(1) can adopt different encryption algorithms for different audio/video object, thus raising audio frequency/The compression efficiency of video;
(2) relatively independent separately between audio/video object, improve the reusability of multi-medium data;
(3) allow user to operate single audio/video object, facilitated user's interactive experience;
(4) allow flexible allocation code check between different audio/video object, can realize according to heavyWant degree to distribute byte how many: can distribute more byte to important object, can divide less important objectJoin less byte, thereby can under low code check, obtain good effect.
(5) integrated naturetone/object video and synthesized voice object video easily.
Based on above-mentioned benefit, the video file of current trend store M P4 form on server, receivesAfter the video playback request of client, distribute again broadcasting. The video literary composition that client server sendsAfter part, first download the video information part with MP4 file header, download again afterwards actual MP4 form and lookAudio data is play.
MP4, as a kind of popular video file format, can play on multiple platforms. Along withThe development of network technology, online displaying video is more and more popular to people. But, due to MP4 formThe information such as the index that video file has comprised its all audio frequency and video frame at its head, make MP4 formVideo file head large especially, carry out MP4 format video file play time, in the initial buffering of videoTime is long especially. If MP4 file is play online, play below on limit, and can cause need to be veryThe download buffer time of the long initial file header of video, and according to the difference of video total length and variant,Generally can reach 1M, have a strong impact on user and seen the experience of watching online MP4 video file.
Current settling mode is the conversion that completes MP4 format video file by server, by belowMode:
(1) be converted into FLV file format, then be transferred to local player plays, utilize FLV headThe less feature of portion is carried out the mode that the initial fast cache of video playback is play.
(2) MP4 format video file division be multiple MP4 files of segment video, so, eachThe head of small documents is all very little, also can reach the object of quick broadcasting.
(3) MP4 format video file is converted to the video file of multiple TS forms, utilize HLS technologyCarry out the broadcasting of TS format video file.
If according to such scheme, the format conversion process of MP4 format video is all at background serverComplete, can bring following problem:
(1) prior art scheme realizes the video file of MP4 form is converted to other lattice on serverThe video file of formula, but it is different to adapt to the video file after conversion must to be transformed to multiple formatVideo playback platform, so, has increased the memory space of service greatly, has increased the cost of server.
(2) prior art scheme realizes the video file of MP4 form is converted to other lattice on serverThe video file of formula, causes same video on server, to store the file of multiple forms, gives serverFile management bring very burden.
(3) prior art scheme realizes the video file of MP4 form is converted to other lattice on serverThe video file of formula, i.e. the video file of burst, the transfer of data of multiple little slicing files can have influence on literary compositionThe laser propagation effect of part, is unfavorable for the broadcasting of client video.
(4) prior art scheme realizes the video file of MP4 form is converted to other lattice on serverThe video file of formula, the network transmission performance efficiency between fluidisation module and the format converting module of serverLow, thus slack problem while causing client video file to be play.
Summary of the invention
In order to solve the problem occurring in above-mentioned prior art, the object of this invention is to provide a kind of MP4The online method and system of playing of format video.
The invention provides a kind of online method of playing of MP4 format video, comprising:
Described client is to returning after server sends MP4 format video file online playing requestThe MP4 format video data of asking and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part;
Described client is according to the file header of described description document Information generation object format video and send toThe player of described client;
Described client is converted to described MP4 format video data object format video data and sends toDescribed player;
When described player is play this video, transfer according to the file header of described object format videoThe described object format video data generating after format conversion is play.
Further, wherein, it is online that described client sends MP4 format video file to serverThe MP4 format video data of asking of returning after playing request and corresponding description document information thereof, enterOne step comprises:
Described server receives after MP4 format video source file, according to described MP4 format video source fileKey frame the file header of described MP4 format video source file is dispersed into file header burst separately, andBe saved in each self-corresponding position in described MP4 format video source file;
Generate corresponding MP4 index file according to described file header burst, by all MP4 indexes that generateFile is kept in order before the MP4 format video file of file header burst and forms described description literary compositionPart information.
Further, wherein, described description document information, is further:
Described description document information recording generate the required information of file header of described object format video,Wherein.
Further, wherein, the file header of described object format video has recorded current goal format videoThe side-play amount of each key frame in file.
Further, wherein, described object format video is further: FLV format video.
The online system of playing of MP4 format video, described system is arranged in client, this systemComprise: receiver module, processing module and player,
Described receiver module, sends the online playing request of MP4 format video file for receiving to serverAfter the MP4 format video data of asking returned and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part;
Described processing module, for according to the file header of described description document Information generation object format videoAnd send to the player of described client;
And described MP4 format video data are converted to object format video data and send to described in broadcastPut device;
Described player generates after transferring format conversion according to the file header of described object format videoDescribed object format video data play.
Further, wherein, described reception sends online broadcasting of MP4 format video file to server pleaseThe MP4 format video data of asking of returning after asking and corresponding description document information thereof, further bagDraw together:
Described description document information, is received after MP4 format video source file, according to institute by described serverThe key frame of stating MP4 format video source file is dispersed into the file header of described MP4 format video source fileFile header burst separately, and be saved in each self-corresponding position in described MP4 format video source file;
Generate corresponding MP4 index file according to described file header burst, by all MP4 indexes that generateFile is kept in order before the MP4 format video file of file header burst and forms.
Further, wherein, described description document information, is further:
Described description document information recording convert the required letter of file header of described object format video toBreath.
Further, wherein, the file header of described object format video has recorded current goal format videoThe side-play amount of each key frame in file.
Further, wherein, described object format video is further: FLV format video.
Compared with prior art, the online method of playing of a kind of MP4 format video described in the application and beSystem, has the following advantages:
(1) the present invention is distributed to the file header of MP4 format video file according to key frame on serverEach correspondence position increases file header information according to the file header disperseing on this MP4 format video file,And return to this file header according to the Online Video playing request of client, client first generates order accordinglyThe file header (comprising index information) of style formula video file, and according to generate file header by downloadMP4 video file is converted to object format video file and is sent to player and plays, so, and at clothesOn business device, shift to an earlier date ready file header information only with being converted to required the looking of object format video file headThe information such as frequency key frame position, so than first downloading the file header that MP4 is larger, the present invention contracts greatlySubtract online first buffer time of playing of MP4 format video file.
(2) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, had both reduced the format conversion management on server, subtracted againLack the management at the multiple format video files of server stores, reduced server cost.
(3) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, the MP4 format video file of storing on server is to compriseHave the complete video file of file header and video data, the transmission of carrying out complete video file can reduce biographyThe defeated impact on video file, guarantee client is changed broadcasting to complete video file.
(4) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, has avoided carrying out on server the stream that video format conversion causesNetwork transmission performance efficiency between change module and format converting module is low, thereby causes client to be lookedSlack problem when frequency file is play.
(5) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, Internet Transmission be single MP4 file, can useP2P technology is accelerated transmission.
Certainly, arbitrary product of enforcement the application must not necessarily need to reach above-described all skills simultaneouslyArt effect.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present application, forms of the applicationPoint, the application's schematic description and description is used for explaining the application, does not form the application'sImproper restriction. In the accompanying drawings:
Fig. 1 is the online method flow schematic diagram of playing of MP4 format video of the present invention;
Fig. 2 is the online method flow signal of playing of the MP4 format video described in the embodiment of the present invention 2Figure;
Fig. 3 is the online method flow signal of playing of the MP4 format video described in Application Example of the present inventionFigure;
Fig. 4 is the online system architecture diagram of playing of MP4 format video of the present invention.
Detailed description of the invention
Censure specific components as used some vocabulary in the middle of description and claim. This area skillArt personnel should understand, and hardware manufacturer may be called same assembly with different nouns. This explanationBook and claim are not used as distinguishing the mode of assembly with the difference of title, but with assembly in functionOn difference be used as distinguish criterion. As mentioned " bag in the middle of in description and claim in the whole textContaining " be an open language, therefore should be construed to " comprise but be not limited to ". " roughly " refer to receivableIn error range, those skilled in the art can solve the technical problem within the scope of certain error, baseOriginally reach described technique effect. In addition, " couple " word and comprise directly any and electrical coupling indirectly at thisCatcher section. Therefore, be coupled to one second device if describe a first device in literary composition, represent described firstDevice can directly be electrically coupled to described second device, by other devices or couple means indirectly electricityProperty be coupled to described second device. Description subsequent descriptions is to implement the application's preferred embodiments, soDescribed description is to illustrate that the application's rule is object, not in order to limit the application's scope.The application's protection domain is when being as the criterion depending on the claims person of defining.
Below in conjunction with accompanying drawing, the application is described in further detail, but not as the restriction to the application.
Embodiment 1:
As shown in Figure 1, be a kind of online method of playing of MP4 format video described in the embodiment of the present invention 1,Comprise:
Step 101, described client sends the online playing request of MP4 format video file to serverAfter the MP4 format video data of asking returned and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part; Wherein,
The file header of common MP4 format video file is larger, has not only comprised video key message,Also include resolution ratio, the audio/video of coded format, the video of audio frequency and video in video file sample rate,The size information of sampling precision, channel number, each audio/video bag and each audio/video bag institute are rightThe information such as the timestamp of answering.
This programme is on server when store M P4 format video file, according to described MP4 format video sourceThe file header that the key frame of file is dispersed into the file header of described MP4 format video source file separately dividesSheet, and be saved in each self-corresponding position in described MP4 format video source file; At described MP4 formBefore the file header of video file, increase described description document information, this description document information recording shouldThe offset information of each key frame in MP4 format video file.
Client, in the time carrying out Online Video broadcasting, need to not downloaded MP4 form in the time that displaying video is initialThe file header of video file, correspondingly, only need to download described description document information. Therefore, compared toThe file header of MP4 format video file, described description document information has only recorded MP4 format video fileBe converted to the required information of object format video file head, greatly reduced the size of this description document information.
Step 102, described client is according to the file header of described description document Information generation object format videoAnd send to the player of described client; Wherein,
The file header of the described object format video generating has recorded the MP4 format video file that needs conversionIn the offset information of each key frame, in the time that player is play seek operation, can find rapidlyTarget video file carries out played in order.
Step 103, described MP4 format video data are converted to object format video data by described clientAnd send to described player; Wherein,
The video file of MP4 form, all with larger file header, is not easy to client fast cache, broadcastsPut, convert thereof into the object format video that file header is less, can make the fast fast cache head of client lookFrequency file.
Step 104, when described player is play this video, according to the literary composition of described object format videoPart head is transferred the described object format video data generating after format conversion and is play.
Embodiment 2:
As shown in Figure 2, on the basis of embodiment 1, this kind of MP4 format video of the present invention is broadcast onlineThe method of putting, comprising:
Step 201, described client sends the online playing request of MP4 format video file to serverAfter the MP4 format video data of asking returned and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part;
The preservation process of described MP4 format video file on server is as follows:
Described server receives after MP4 format video source file, according to described MP4 format video source fileKey frame the file header of described MP4 format video source file is dispersed into file header burst separately, andBe saved in each self-corresponding position in described MP4 format video source file;
Generate corresponding MP4 index file according to described file header burst, by all MP4 indexes that generateFile is kept in order before the MP4 format video file of file header burst and forms described description literary compositionPart information.
Wherein, in described MP4 file header burst with the number of all frames before each key frame and largeLittle information, in order to increase key frame index in the convenient object format video file generating.
Step 202, described client is according to the file header of described description document Information generation object format videoAnd send to the player of described client;
Described description document information recording convert the required letter of file header of described object format video toBreath, wherein, this description document information is root in the time that described server is preserved described MP4 format video fileGenerate according to the file header of described MP4 format video;
The file header of described object format video has recorded each key frame in current goal format video fileSide-play amount.
Step 203, described MP4 format video data are converted to object format video data by described clientAnd send to described player.
Step 204, when described player is play this video, according to the literary composition of described object format videoPart head is transferred the described object format video data generating after format conversion and is play.
Embodiment 3:
As shown in Figure 3, be a kind of MP4 format video of the present invention concrete reality of the method for broadcasting onlineExecute example, comprising:
Step 301, described client sends the online playing request of MP4 format video file to serverAfter the MP4 format video data of asking returned and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to FLV format video literary compositionThe needed information of part.
Step 302, described client is according to the file header of described description document Information generation FLV format videoAnd send to the player of described client.
Wherein, in described MP4 file header burst with the number of all frames before each key frame and largeLittle information, in order to increase key frame index in the convenient FLV file generating.
Step 303, described MP4 format video data are converted to FLV format video data by described clientAnd send to described player.
Step 304, when described player is play this video, according to the literary composition of described FLV format videoPart head is transferred the described FLV format video data that generate after format conversion and is play.
Embodiment 4:
As shown in Figure 4, be the online system of playing of a kind of MP4 format video of the present invention, described system is establishedPut in client, this system comprises: receiver module 401, processing module 402 and player 403.
Described receiver module 401, connects with described processing module 402 phase lotus roots, sends to server for receivingThe MP4 format video data of asking of returning after the online playing request of MP4 format video file and rightThe description document information of answering, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part.
Described processing module 402, connects with described receiver module 401 and described player 403 phase lotus roots respectively, usesAccording to the file header of described description document Information generation object format video and send to described clientPlayer;
And described MP4 format video data are converted to object format video data and send to described in broadcastPut device.
Described player 403, connects with described processing module 402 phase lotus roots, for looking according to described object formatFile header is frequently transferred the described object format video data generating after format conversion and is play.
In the present embodiment, described reception sends the online playing request of MP4 format video file to serverAfter the MP4 format video data of asking returned and corresponding description document information thereof, further comprise:
Receive after MP4 format video source file, will according to the key frame of described MP4 format video source fileThe file header of described MP4 format video source file is dispersed into file header burst separately, and described in being saved inEach self-corresponding position in MP4 format video source file;
Generate corresponding MP4 index file according to described file header burst, and by all MP4 ropes that generateQuoted passage part is kept in order before the MP4 format video file of file header burst and forms described descriptionFileinfo.
Described description document information, is further:
Described description document information recording convert the required letter of file header of described object format video toBreath, wherein,
This description document information be in the time that described server is preserved described MP4 format video file according to described inThe file header of MP4 format video generates.
Further, the file header of described object format video has recorded in current goal format video fileThe side-play amount of each key frame.
Further, described object format video is FLV format video.
Compared with prior art, the online method of playing of a kind of MP4 format video described in the application and beSystem, has the following advantages:
(1) the present invention is distributed to the file header of MP4 format video file according to key frame on serverEach correspondence position increases file header information according to the file header disperseing on this MP4 format video file,And return to this file header according to the Online Video playing request of client, client first generates order accordinglyThe file header (comprising index information) of style formula video file, and according to generate file header by downloadMP4 video file is converted to object format video file and is sent to player and plays, so, and at clothesOn business device, shift to an earlier date ready file header information only with being converted to required the looking of object format video file headThe information such as frequency key frame position, so than first downloading the file header that MP4 is larger, the present invention contracts greatlySubtract online first buffer time of playing of MP4 format video file.
(2) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, had both reduced the format conversion management on server, subtracted againLack the management at the multiple format video files of server stores, reduced server cost.
(3) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, the MP4 format video file of storing on server is to compriseHave the complete video file of file header and video data, the transmission of carrying out complete video file can reduce biographyThe defeated impact on video file, guarantee client is changed broadcasting to complete video file.
(4) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, has avoided carrying out on server the stream that video format conversion causesNetwork transmission performance efficiency between change module and format converting module is low, thereby causes client to be lookedSlack problem when frequency file is play.
(5) the present invention processes MP4 format video file on server, and carries out in clientThe format conversion of MP4 format video file, Internet Transmission be single MP4 file, can useP2P technology is accelerated transmission.
Above-mentioned explanation illustrates and has described some preferred embodiments of the application, but as previously mentioned, should manageSeparate the application and be not limited to disclosed form herein, should not regard the eliminating to other embodiment as,And can be used for various other combinations, amendment and environment, and can be in application contemplated scope described herein,Technology or knowledge by above-mentioned instruction or association area are changed. Change and those skilled in the art carry outThe spirit and scope moving and variation does not depart from the application, all should be in the protection of the application's claimsIn scope.
Claims (10)
1. the online method of playing of MP4 format video, is characterized in that, comprising:
Described client is to returning after server sends MP4 format video file online playing requestThe MP4 format video data of asking and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part;
Described client is according to the file header of described description document Information generation object format video and send toThe player of described client;
Described client is converted to described MP4 format video data object format video data and sends toDescribed player;
When described player is play this video, transfer according to the file header of described object format videoThe described object format video data generating after format conversion is play.
2. the online method of playing of MP4 format video according to claim 1, is characterized in that,Described client to return after server sends MP4 format video file online playing request askThe MP4 format video data of asking and corresponding description document information thereof, further comprise:
Described server receives after MP4 format video source file, according to described MP4 format video source fileKey frame the file header of described MP4 format video source file is dispersed into file header burst separately, andBe saved in each self-corresponding position in described MP4 format video source file;
Generate corresponding MP4 index file according to described file header burst, by all MP4 indexes that generateFile is kept in order before the MP4 format video file of file header burst and forms described description literary compositionPart information.
3. the online method of playing of MP4 format video according to claim 2, is characterized in that,Described description document information, is further:
Described description document information recording generate the required information of file header of described object format video,Wherein.
4. the online method of playing of MP4 format video according to claim 3, is characterized in that,The file header of described object format video recorded each key frame in current goal format video file partiallyThe amount of moving.
5. the online method of playing of MP4 format video according to claim 1, is characterized in that,Described object format video is further: FLV format video.
6. the online system of playing of MP4 format video, is characterized in that, described system is arranged on visitorOn the end of family, this system comprises: receiver module, processing module and player,
Described receiver module, sends the online playing request of MP4 format video file for receiving to serverAfter the MP4 format video data of asking returned and corresponding description document information thereof, wherein,
Described description document information comprises: described MP4 format video file is converted to object format video literary compositionThe needed information of part;
Described processing module, for according to the file header of described description document Information generation object format videoAnd send to the player of described client;
And described MP4 format video data are converted to object format video data and send to described in broadcastPut device;
Described player generates after transferring format conversion according to the file header of described object format videoDescribed object format video data play.
7. the online system of playing of MP4 format video according to claim 6, is characterized in that,Described reception is to asking of returning after server sends MP4 format video file online playing requestMP4 format video data and corresponding description document information thereof, further comprise:
Described description document information, is received after MP4 format video source file, according to institute by described serverThe key frame of stating MP4 format video source file is dispersed into the file header of described MP4 format video source fileFile header burst separately, and be saved in each self-corresponding position in described MP4 format video source file;
Generate corresponding MP4 index file according to described file header burst, by all MP4 indexes that generateFile is kept in order before the MP4 format video file of file header burst and forms.
8. the online system of playing of MP4 format video according to claim 7, is characterized in that,Described description document information, is further:
Described description document information recording convert the required letter of file header of described object format video toBreath.
9. the online system of playing of MP4 format video according to claim 8, is characterized in that,The file header of described object format video recorded each key frame in current goal format video file partiallyThe amount of moving.
10. the online system of playing of MP4 format video according to claim 6, is characterized in that,Described object format video is further: FLV format video.
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| WO2017080427A1 (en) * | 2015-11-10 | 2017-05-18 | 中兴通讯股份有限公司 | Media playing method, terminal, system and computer storage medium |
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