CN108174284A - A kind of method of the decoding video based on android system - Google Patents
A kind of method of the decoding video based on android system Download PDFInfo
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- CN108174284A CN108174284A CN201711473863.0A CN201711473863A CN108174284A CN 108174284 A CN108174284 A CN 108174284A CN 201711473863 A CN201711473863 A CN 201711473863A CN 108174284 A CN108174284 A CN 108174284A
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
-
- 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
-
- 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
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
-
- 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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- 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
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
- H04N21/8586—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot by using a URL
Abstract
The invention discloses a kind of methods of the decoding video based on android system, are related to video decoding play-back technology field.This method, by being parsed in android system to M3U8 agreements, then TS is unpacked, again to being h.264/aac decoded broadcasting in android system (equipment of android system can play the video that h.264/aac mp4 forms encode in itself), in use, Android user downloads M3U8 files, pass through the index address of M3U8 files, play specific each segment video under index list, it realizes and the parsing of video file under M3U8 index lists is played in Android device, and then realize the cross-platform cross equipment video on demand and live-experience of Streaming Media.
Description
Technical field
The present invention relates to video decoding play-back technology field more particularly to a kind of decoding videos based on android system
Method.
Background technology
Common stream media protocol mainly has HTTP progressive downloads and the real-time stream media protocol based on RTSP/RTP
More convenient and handy at present is to use HTTP progressive download agreements, wherein, the HTTP Live of Apple companies
Streaming (HLS, hypertext live TV stream) is the representative of this agreement, and HLS protocol is by Apple foundings of the company, based on HTTP
Streaming media interaction protocol, and HLS protocol supports automatic rate adaption, in HLS technologies Web server to communication eventually
End provides video streaming services.It is initially that Apple Inc. develops for the mobile equipment such as iPhone, iPod, iTouch and iPad
Stream, also have many applications in desktop now.In HLS technologies, Web server provides the audio and video of near real-time to client
Stream.But it is the http protocol of the standard used during use, so, as long as using the technology of HLS, it just can be common
Program request and live streaming are directly provided in the application of HTTP.The relevant application of video in App Store is substantially application this
Kind technology.The technology basic principle is that video file or video flowing are cut into small pieces (ts) and establish index file (M3U8).
H.264 the video flowing of support is encoded to, audio stream is encoded to AAC.
M3U8 files refer to the M3U files of UTF-8 coded formats.M3U files are to have recorded an index text-only file,
Playout software is not to play it when opening it, but according to its index find the network address of corresponding audio-video document into
Row is online to be played.M3U8 be Apple Inc. release on iPhone mobile phones video stream media broadcast agreement, video and audio lattice
Formula carries out package using h.264/aac encoding, using mpeg2ts.
Under prior art conditions, it can not be realized in the equipment based on android system and M3U8 agreements are parsed,
Namely the files in stream media of this agreement can not play out on the terminal device based on android system, present solution
Scheme mainly have it is following two：
1.HTML is played, i.e., the files in stream media of M3U8 agreements is played in HTML.
Advantage：HTML is the direct files in stream media for supporting M3U8 agreements, without the system problem for considering terminal device.
Shortcoming：Experience it is bad, that the player of primary exploitation is not smooth and the convenience of manipulation.
2. browser pretends Ipad patterns, i.e., Ipad patterns are set as in the browser of Android device, are then played
The files in stream media of the type.
Advantage：The Apple equipment that disguises oneself as accesses behavior, and operation is relatively easy.
Shortcoming：Browser broadcasting experience is bad, and is easily checked out original equipment as the terminal based on android system,
It causes to play and fail.
Invention content
It is existing so as to solve the purpose of the present invention is to provide a kind of method of the decoding video based on android system
Foregoing problems present in technology.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of method of the decoding video based on android system, includes the following steps：
S1 obtains M3U8 files；
S2 parses M3U8 files, obtains .TS APMB packages；
S3 parses .TS APMB packages, directly acquires TS video clips address or to TS video clip index lists
After carrying out URL splicings, TS video clips address is obtained；
S4 creates playing task list, stores the address of each TS video clips in M3U8 files；
S5, according to the address of each TS video clips, the TS in playing task list in the equipment based on android system
Video clip.
Preferably, S1 is specially：Pass through server acquisition of the network transmission from storage video file or slave device memory
It is middle to obtain the file with parsing.
Preferably, in S1, for the M3U8 files if any encryption, then URL addresses and the M3U8 index lists for obtaining key are close
Text obtains content decryption public key, and M3U8 index list ciphertexts is decrypted.
Preferably, S2 obtains .TS packets specifically, the series of labels in M3U8 files parses M3U8 files
The URL addresses of file or relative indexing address, the series of labels include：
#EXTM3U, positioned at the first row of each M3U8 files；
#EXT-X-TARGETDURATION, for specifying maximum media segment time span, value in M3U8 files only
Occur primary；
#EXTINF, for describing the length of single medium file, value is less than or equal to #EXT-X-
The value specified in TARGETDURATION labels, the label are the URL addresses of .TS APMB packages or relative indexing address later.
Preferably, in S3, TS video clips address for file name, bibliographic structure, bibliographic structure and with M3U8 files
Download address catalogue is overlapped or complete segment download address；
It is described directly acquire TS video clips address or to TS video clips index list carry out URL splicings after, obtain TS
Video clip address, is implemented with the following method：
First grade file is opened, obtains TS video clips address；
Or
After opening first grade file, after carrying out URL splicings to TS video clips index list, TS video clips address is obtained；
Or
In first grade file, the address of second grade file is directly obtained, in second grade file, directly acquires TS video clips
Address or in second grade file, the address of splicing two level link get TS video clips address；
Or
In first grade file, the address of splicing level-one link gets the address of second grade file, in second grade file, directly
Obtain TS video clips address or in second grade file, the address of splicing two level link gets TS video clips address.
Preferably, S4 is specially：
The playing task list of an array or sequence is created, for the rope for each TS video files that storing and resolving obtains
Draw address, and by playing task list using in the following Android data storage technology storage to application data of any one：
SharedPreferences storages data, file storage data, SQLite or other data database storings,
ContentProvider stores data and network stored data.
Preferably, S5 is specially：The address of each TS video clips is passed into player, player is according to this address
Corresponding video stream file is obtained to play out.
The beneficial effects of the invention are as follows：The method of decoding video provided in an embodiment of the present invention based on android system,
By being parsed in android system to M3U8 agreements, then TS is unpacked, then in android system it is right
H.264/aac it is decoded broadcasting (the equipment of android system regarding of can playing that h.264/aac mp4 forms encode in itself
Frequently), in use, Android user downloads M3U8 files, by the index address of M3U8 files, plays index list
Lower specific each segment video, realizes and the parsing of video file under M3U8 index lists is played in Android device,
And then realize the cross-platform cross equipment video on demand and live-experience of Streaming Media.
Description of the drawings
Fig. 1 is the method flow schematic diagram of the decoding video provided in an embodiment of the present invention based on android system.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to
Limit the present invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of method of the decoding video based on android system, including
Following steps：
S1 obtains M3U8 files；
S2 parses M3U8 files, obtains .TS APMB packages；
S3 parses .TS APMB packages, directly acquires TS video clips address or to TS video clip index lists
After carrying out URL splicings, TS video clips address is obtained；
S4 creates playing task list, stores the address of each TS video clips in M3U8 files；
S5, according to the address of each TS video clips, the TS in playing task list in the equipment based on android system
Video clip.
Wherein, S1 is specifically as follows：It is obtained by the server of network transmission from storage video file or slave device stores
The file with parsing is obtained in device.
In actual use, i.e., user downloads M3U8 files.
In a preferred embodiment of the invention, in S1, the M3U8 files are if any encryption, then with obtaining the URL of key
Location and M3U8 index list ciphertexts obtain content decryption public key, and M3U8 index list ciphertexts are decrypted.
Using the above method, the decryption to M3U8 files can be realized.
In the embodiment of the present invention, S2 is specifically as follows, and the series of labels in M3U8 files solves M3U8 files
Analysis, obtains the URL addresses of .TS APMB packages or relative indexing address, the series of labels includes：
#EXTM3U, positioned at the first row of each M3U8 files；
#EXT-X-TARGETDURATION, for specifying maximum media segment time span, value in M3U8 files only
Occur primary；
#EXTINF, for describing the length of single medium file, value is less than or equal to #EXT-X-
The value specified in TARGETDURATION labels, the label are the URL addresses of .TS APMB packages or relative indexing address later.
Since M3U8 with text mode is described media file, it is made of a series of labels, so,
Using the above method, the parsing to M3U8 files can be conveniently realized, obtain the URL addresses or opposite of .TS APMB packages
Index address.
In the embodiment of the present invention, in S3, TS video clips address can be file name, bibliographic structure, bibliographic structure and
Chong Die with the download address catalogue of M3U8 files or complete segment download address；
It is described directly acquire TS video clips address or to TS video clips index list carry out URL splicings after, obtain TS
Video clip address, is implemented with the following method：
First grade file is opened, obtains TS video clips address；
Or
After opening first grade file, after carrying out URL splicings to TS video clips index list, TS video clips address is obtained；
Or
In first grade file, the address of second grade file is directly obtained, in second grade file, directly acquires TS video clips
Address or in second grade file, the address of splicing two level link get TS video clips address；
Or
In first grade file, the address of splicing level-one link gets the address of second grade file, in second grade file, directly
Obtain TS video clips address or in second grade file, the address of splicing two level link gets TS video clips address.
In actual use, there are following possible four kinds of situations for the address of TS video clips：
The first：Ts fragment address is file name；
Second：Ts fragment address is bibliographic structure；
The third：Ts fragment address is bibliographic structure, but is overlapped with m3u8 download address catalogue；
4th kind：Ts fragment address is complete segment download address.
For these four situations, TS video clips address can be obtained by the following method
TS video clips address is directly acquired, alternatively, after by carrying out URL splicings to TS video clips index list, is obtained
TS video clips address is taken, specific acquisition methods mainly include two kinds：
1) first class catalogue：
First class paper is opened, real video address can be found；
In first class paper, without real video address, need splicing that can just find real video address；
2) second-level directory：
Two-level address can directly be seen in first grade file；
Two-level address is not directly visible in first grade file, needs the address for splicing level-one link that can just find two level text
The address of part；
Second-level directory is opened, real video address can be found；
There is no real video address, need splicing that can just find real video address；
In the embodiment of the present invention, S4 is specifically as follows：
The playing task list of an array or sequence is created, for the rope for each TS video files that storing and resolving obtains
Draw address, and by playing task list using in the following Android data storage technology storage to application data of any one：
SharedPreferences storages data, file storage data, SQLite or other data database storings,
ContentProvider stores data and network stored data.
In the embodiment of the present invention, S5 is specially：The address of each TS video clips is passed into player, player according to
This address obtains corresponding video stream file and plays out.
Ts files be transfer stream file, Video coding primary format h264/mpeg4, audio acc/MP3.Ts files point
It is three layers：Ts layers of Transport Stream, pes layers of Packet Elemental Stream, es layer Elementary
Stream.es layers are exactly audio, video data, and pes layers are that timestamp etc. has been added to illustrate letter to data frame on audio, video data
Breath, ts layers are exactly the identification and the necessary information of transmission for adding in data flow at pes layers, and wherein ts layers of content is to pass through pid value
Come what is identified, main contents include：Pat table, pmt table, audio stream, video flowing.Parsing ts streams will first find pat table, as long as looking for
PMT can be found to PAT, then can find audio/video flow.As long as there are PAT and PMT to broadcast HLS streams
It puts.So according to the real address of video file, only address need to be passed to player, player can be according to this address
It obtains corresponding video stream file to play, so as to fulfill video in the playing task list in the equipment based on android system
File.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained：The embodiment of the present invention carries
The method of the decoding video based on android system supplied, by being parsed in android system to M3U8 agreements, so
TS is unpacked afterwards, then to being h.264/aac decoded broadcasting, (equipment of android system is in itself in android system
The video that h.264/aac mp4 forms encode can be played), in use, Android user downloads M3U8 files, passes through
The index address of M3U8 files plays specific each segment video under index list, and it is right in Android device to realize
The parsing of video file plays under M3U8 index lists, and then realizes cross-platform cross equipment video on demand and the live streaming of Streaming Media
Experience.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (7)
- A kind of 1. method of the decoding video based on android system, which is characterized in that include the following steps：S1 obtains M3U8 files；S2 parses M3U8 files, obtains .TS APMB packages；S3 parses .TS APMB packages, directly acquires TS video clips address or TS video clips index list is carried out After URL splicings, TS video clips address is obtained；S4 creates playing task list, stores the address of each TS video clips in M3U8 files；S5, according to the address of each TS video clips, the TS videos in playing task list in the equipment based on android system Segment.
- 2. the method for the decoding video according to claim 1 based on android system, which is characterized in that S1 is specially： By obtaining the file with parsing in server acquisition of the network transmission from storage video file or slave device memory.
- 3. the method for the decoding video according to claim 1 based on android system, which is characterized in that described in S1 M3U8 files then obtain the URL addresses of key and M3U8 index list ciphertexts, obtain content decryption public key, and right if any encryption M3U8 index list ciphertexts are decrypted.
- 4. the method for the decoding video according to claim 1 based on android system, which is characterized in that S2 specifically, Series of labels in M3U8 files parses M3U8 files, with obtaining URL addresses or the relative indexing of .TS APMB packages Location, the series of labels include：#EXTM3U, positioned at the first row of each M3U8 files；#EXT-X-TARGETDURATION, for specifying maximum media segment time span, value only occurs in M3U8 files Once；#EXTINF, for describing the length of single medium file, value is marked less than or equal to #EXT-X-TARGETDURATION The value specified in label, the label are the URL addresses of .TS APMB packages or relative indexing address later.
- 5. the method for the decoding video according to claim 1 based on android system, which is characterized in that in S3, TS is regarded Frequency fragment address for file name, bibliographic structure, bibliographic structure and it is Chong Die with the download address catalogue of M3U8 files or completely Segment download address；It is described directly acquire TS video clips address or to TS video clips index list carry out URL splicings after, obtain TS videos Fragment address is implemented with the following method：First grade file is opened, obtains TS video clips address；OrAfter opening first grade file, after carrying out URL splicings to TS video clips index list, TS video clips address is obtained；OrIn first grade file, the address of second grade file is directly obtained, in second grade file, with directly acquiring TS video clips Location or in second grade file, the address of splicing two level link get TS video clips address；OrIn first grade file, the address of splicing level-one link gets the address of second grade file, in second grade file, directly acquires TS video clips address or in second grade file, the address of splicing two level link get TS video clips address.
- 6. the method for the decoding video according to claim 1 based on android system, which is characterized in that S4 is specially：The playing task list of an array or sequence is created, the index of each TS video files obtained for storing and resolving Location, and by playing task list using in the following Android data storage technology storage to application data of any one： SharedPreferences storages data, file storage data, SQLite or other data database storings, ContentProvider stores data and network stored data.
- 7. the method for the decoding video according to claim 1 based on android system, which is characterized in that S5 is specially： The address of each TS video clips is passed into player, player obtains corresponding video stream file according to this address and carries out It plays.
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| CN108174284B (en) | 2020-09-15 |
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