CN104661046A - Decoding method and device of media stream - Google Patents
Decoding method and device of media stream Download PDFInfo
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- CN104661046A CN104661046A CN201310603028.XA CN201310603028A CN104661046A CN 104661046 A CN104661046 A CN 104661046A CN 201310603028 A CN201310603028 A CN 201310603028A CN 104661046 A CN104661046 A CN 104661046A
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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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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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
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
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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
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
Abstract
The invention provides a decoding method and device of a media stream. The method and device are used for realizing the purpose that files on the side of a terminal are decoded into media stream files with a uniform format so as to solve the problem that when terminals download the media stream files from the server, because the terminals do not support the media format of the downloaded media stream files, the terminals cannot normally play the downloaded media stream files. The method comprises the following steps: the terminals receive the media stream files with the uniform format and obtain data files and description files from the media stream files, wherein the data files comprise the data of each frame of the media streams, and the description files comprise the description information of the data of each frame; the terminals utilize the description files to obtain the data of each frame from the data files.
Description
Technical field
The present invention relates to media streaming techniques field, particularly relate to a kind of coding/decoding method and device of Media Stream.
Background technology
Media Stream refers to that the data such as video, sound take RTP as carrying, and transmits to destination from source with the form of Continuous Flow, just can carry out the multimedia application of playing at destination after receiving the data of certain buffer memory.Media streaming techniques is applied on wireless network and mobile terminal, be then referred to as mobile media stream.
Along with wireless network was drive on boldly to the 3G epoch, the technology of fast wireless network and application thereof are more and more dissolved in the life of people, amusement and work, the application prospect of fast wireless network is very good, and the application of mobile media stream also obtains very large application thereupon.
At present, mobile media stream realizing content-on-demand, live time, mainly adopt in the following method: managing portal realizes uploading, audit and issuing content, audio frequency and video door realizes program request, the representing of live content, and user selects the media content of program request to play by mobile terminal.
At present, the media formats that mobile media stream is conventional has:
3gp/3gp2 media formats, this media formats is 3GPP/3GPP2(3rd Generation PartnershipProject, third generation partner program) the standard mobile media stream format organized to set up, support that the terminal of this media formats is maximum;
WMV(Windows Media Video, windows media video) media formats, this media formats has a small amount of terminal to support this media formats;
RM(Real Media, audio frequency and video compression specification) media formats, this media formats is that the terminal being built-in with RealPlay player is supported, 3gp/3gp2 media formats supported by RealPlay player simultaneously.
Along with the variation of mobile terminal and the variation of media stream content form, the mobile terminal support media stream format of different model is different.If the content that mobile terminal device can not be decoded is sent to mobile terminal device, mobile terminal device can not the content of normal decoder media stream.
Summary of the invention
Embodiments provide a kind of coding/decoding method and device of Media Stream, for realizing the media stream file of end side decoding consolidation form, thus solving terminal when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
Embodiments provide a kind of coding/decoding method of Media Stream, described method comprises:
Terminal receives the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Terminal utilizes each frame data in this description document acquisition data file.
Terminal is by obtaining the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described; Terminal is according to the descriptor of each frame number read from description document, corresponding frame data are read from described data file, thus solving terminal when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
Preferably, the descriptor of each frame data described comprises the guidance code of these frame data, and described guidance code comprises the frame type of these frame data, the size for the frame number and each frame data of determining these frame data position in the data file; Be convenient to end side and from data file, obtain corresponding frame data according to the frame number of each frame and the size of these frame data.
Preferably, in described data file, each frame data is arranged in order according to its frame number order from small to large; Frame data are placed according to its frame number, is convenient to terminal and searches corresponding frame data according to the descriptor of each frame.In addition, the frame data in described data file also can be placed according to frame number order from big to small successively, can reach equally and be convenient to terminal searches corresponding frame data object according to the descriptor of each frame.
Preferably, described each frame data utilized in description document acquisition data file, comprising:
The frame number of terminal according to each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn.
Embodiments provide a kind of decoding device, described device comprises: acquisition module, for receiving the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Playing module, for utilizing each frame data in this description document acquisition data file.
Described decoding device is by obtaining the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described; Described decoding device is according to the descriptor of each frame number read from description document, corresponding frame data are read from described data file, thus solving when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
Preferably, the descriptor of each frame data described comprises the guidance code of these frame data, and described guidance code comprises the frame type of each frame, the size for the frame number and frame data of determining frame position; Decoding device, according to the size of the frame number of each frame and frame data corresponding to this frame number, reads corresponding frame data from data file.
Preferably, in described data file, each frame data is arranged in order according to its frame number order from small to large; Frame data are placed according to the order that its frame number is ascending, is convenient to terminal and searches corresponding frame data according to the descriptor of each frame.In addition, the frame data in described data file also can be placed according to frame number order from big to small successively, can reach equally and be convenient to terminal searches corresponding frame data object according to the descriptor of each frame.
Preferably, described playing module specifically for:
According to the frame number of each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn.
Preferably, described acquisition module reception server send or the media stream file of consolidation form that sends with the terminal that this device sets up point to point connect.
Accompanying drawing explanation
The schematic flow sheet of the coding/decoding method of the Media Stream that Fig. 1 provides for the embodiment of the present invention one;
The schematic flow sheet of the coding/decoding method of the another kind of Media Stream that Fig. 2 provides for the embodiment of the present invention two;
The structural representation of the code device of the Media Stream that Fig. 3 provides for the embodiment of the present invention three;
The structural representation of the decoding device of the Media Stream that Fig. 4 provides for the embodiment of the present invention four.
Embodiment
Embodiments provide a kind of coding/decoding method and device of Media Stream, for realizing the media stream file of end side decoding consolidation form, thus solving terminal when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Can not the problem of normal play in order to solve the media stream file that causes because of media formats in prior art, can be resolved source file by server, obtain each frame data, and comprise the description document of descriptor of each frame data, and by described description document and the media stream file of data file composition consolidation form comprising each frame data, can both normal decoder broadcasting in the terminal that the media stream file of described consolidation form is play at any one support media stream file.
Described coding method specifically comprises:
The first step, media stream server reads the decoder identification information of carrying from the media stream file of source, according to described decoder identification information, obtains corresponding decoder;
Wherein, described decoder identification information is the filename that decoding drives;
Further, described according to described decoder identification information, obtain corresponding decoder, comprising:
According to the filename that described decoding drives, from local memory space, search for the corresponding decoder preserved in advance; Or, according to the filename that described decoding drives, by the corresponding decoder of Network Capture.
Because described decoder obtains according to the form of source media stream file, therefore, the form of described source media stream file is the form of the media stream file that described decoder is supported.
Second step, utilizes the decoder of described acquisition, and server is resolved source media stream file, generates the source media stream file after resolving.
3rd step, server is the frame data of filtering wherein in each frame from the source media stream file after described parsing, obtain the description document of the descriptor comprising each frame, wherein, described descriptor is the guidance code of each frame, and described guidance code comprises the frame type of each frame, the size for the frame number and each frame data of determining the position of each frame data in described data file.
4th step, server extracts each frame data from the source media stream file after described parsing, obtains the data file comprising each frame data.
5th step, described description document is become the media stream file of consolidation form by server with encoded data file.
By above-mentioned steps, the Media Stream that the embodiment of the present invention provides described consolidation form can be generated.The media stream file of described consolidation form comprises description document and data file, wherein, described description document comprises the descriptor of each frame data, described data file comprises each frame data, make the terminal of the media stream file obtaining this consolidation form, can obtain according to the descriptor of each frame data in described description document each frame data that will play from data file, realize the normal broadcasting of the media stream file to consolidation form.
It is to be noted, the above-mentioned step for generating data file and the sequence of steps for generating description document can be exchanged, namely first analytically after source media stream file in extract each frame data, obtain the data file comprising each frame data, and then filtering resolve after source media stream file each frame in frame data, obtain the description document of the descriptor comprising each frame, wherein, described descriptor is the guidance code of each frame, described guidance code comprises the frame type of each frame, for the size of the frame number and each frame data of determining the position of each frame data in described data file.
For the media stream file of the consolidation form of above-mentioned generation, embodiments provide a kind of coding/decoding method of Media Stream, realize the decoding to the media stream file of described consolidation form and broadcasting; See Fig. 1, described method specifically comprises:
Step 11, terminal receives the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Step 12, terminal utilizes each frame data in this description document acquisition data file.
Terminal is by obtaining the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described; Terminal is according to the descriptor of each frame number read from description document, corresponding frame data are read from described data file, thus solving terminal when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
Preferably, the descriptor of each frame data described comprises the guidance code of these frame data, and described guidance code comprises the frame type of these frame data, the size for the frame number and each frame data of determining these frame data position in the data file; Be convenient to end side search accurately from data file according to the frame number of each frame and the size of these frame data and obtain corresponding frame data.
Preferably, in described data file, each frame data is arranged in order according to its frame number order from small to large; Frame data are placed according to its frame number, is convenient to terminal and searches corresponding frame data according to the descriptor of each frame.In addition, the frame data in described data file also can be placed according to frame number order from big to small successively, can reach equally and be convenient to terminal searches corresponding frame data object according to the descriptor of each frame.
Preferably, described each frame data utilized in description document acquisition data file, comprising:
The frame number of terminal according to each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn.
For can clearer elaboration embodiments of the invention technical problem, technical scheme and the beneficial effect that will solve, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The schematic flow sheet of the coding/decoding method of the Media Stream provided for the embodiment of the present invention two see Fig. 2, Fig. 2; Described coding/decoding method specifically comprises:
Step 21, terminal detects the request whether having the media stream file obtaining consolidation form, and when the request of the media stream file obtaining consolidation form being detected, terminal sends the request of the media stream file obtaining consolidation form to media stream server; Wherein, the media stream file of described consolidation form comprises data file and description document, and described data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Described descriptor comprises the guidance code of each frame data, and described guidance code comprises the frame type of these frame data, the size for the frame number and each frame data of determining these frame data position in the data file; Be convenient to terminal and from data file, obtain corresponding frame data according to the frame number of each frame and the size of these frame data.
Step 22, media stream server, in response to the request of media stream file of acquisition consolidation form carrying out self terminal, sends the media stream file of corresponding consolidation form to described terminal.
Step 23, the media stream file of the consolidation form that terminal receiving media streaming server sends, and therefrom obtain description document and data file, and store in the terminal.
Step 24, terminal is according to the request of playing, and from description document, search the descriptor of the frame data required for broadcasting, according to the descriptor of these data, terminal reads corresponding frame data from described data file; After reading corresponding frame data, terminal is play the corresponding frame data read.
In described data file, each frame data is arranged in order according to its frame number order from small to large; Frame data are placed according to its frame number, is convenient to terminal and searches corresponding frame data according to the descriptor of each frame.In addition, the frame data in described data file also can be placed according to frame number order from big to small successively, can reach equally and be convenient to terminal searches corresponding frame data object according to the descriptor of each frame.Therefore, in step 24, terminal, according to the queueing discipline of frame data, finds required frame data fast.
Further, in step 24, the frame number of terminal according to each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn.
Pass through above-mentioned steps, the decoding of the media stream file to consolidation form can be completed, the media stream file of the consolidation form that described terminal obtains comprises description document and data file, wherein, described description document comprises the descriptor of each frame data, described data file comprises each frame data, make the terminal of the media stream file obtaining this consolidation form, each frame data that will play can be obtained from data file according to the descriptor of each frame data in described description document, realize the normal broadcasting to the media stream file of consolidation form, effectively solving this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
The embodiment of the present invention three provides a kind of code device, the structural representation of the code device of the Media Stream provided for the embodiment of the present invention two see Fig. 3, Fig. 3; As can be seen from Figure 3, described code device comprises: parsing module 31, coding module 32 and sending module 33, concrete:
Described parsing module 31, for resolving source media stream file at server side, obtains each frame data, and comprises the description document of descriptor of each frame data;
Further, described parsing module 31 specifically for:
By resolving source media stream file, obtain the source media stream file after resolving, frame data in each frame of source media stream file filtering analytically, obtain the description document of the descriptor comprising each frame, wherein, described descriptor is guidance code, and described guidance code comprises the frame type of each frame, the size for the frame number and each frame data of determining the position of each frame data in described data file; Described coding module 32 analytically after source media stream file in extract each frame data, obtain the data file comprising each frame data; Then by the media stream file of the composition consolidation form of described description document and data file.
Described parsing module 31 passes through parsing source media stream file, when obtaining the source media stream file after resolving, specifically for: from the media stream file of source, read the decoder identification information of carrying; According to described decoder identification information, obtain corresponding decoder; Utilize described decoder to decode to source file, obtain the source media stream file after resolving.
Further, described decoder identification information is the filename that decoding drives; Parsing module 31 according to described decoder identification information, when obtaining corresponding decoder, specifically for:
According to the filename that described decoding drives, from local memory space, search for the corresponding decoder preserved in advance; Or, according to the filename that described decoding drives, by the corresponding decoder of Network Capture; Utilize the decoder of described acquisition, source media stream file is resolved, generate the source media stream file after resolving;
Because described decoder obtains according to the media formats of source Media Stream, therefore, the form of described source media stream file is the media formats that described decoder is supported.
Described coding module 32, for becoming the media stream file of a consolidation form with the encoded data file comprising each frame data by described description document;
Described sending module 33, for responding the request of the media stream file of the acquisition consolidation form from node, sends to node by the media stream file of the consolidation form of generation.
Utilize above-mentioned code device, by parsing module, source media stream file is resolved, generate the source media stream file after resolving, generate according to the source media stream file after parsing the media stream file comprising the consolidation form of description document and data file by described coding module, wherein, the descriptor of each frame data is comprised in described description document, data file comprises each frame data in source file, make terminal or the node of the media stream file obtaining this consolidation form, each frame data that will play can be obtained from data file according to the descriptor of each frame data in described description document, realize the normal broadcasting to the media stream file of consolidation form.
The embodiment of the present invention four provides a kind of decoding device, the structural representation of the decoding device of the Media Stream provided for the embodiment of the present invention three see Fig. 4, Fig. 4; As can be seen from Figure 4, described decoding device comprises: acquisition module 41, memory module 42 and playing module 43; Concrete:
Described acquisition module 41, for receiving the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Concrete, the descriptor of each frame data described comprises the guidance code of these frame data, and described guidance code comprises the frame type of each frame, the size for the frame number and frame data of determining frame position; Decoding device, according to the size of the frame number of each frame and frame data corresponding to this frame number, reads corresponding frame data from data file.
Described memory module 42, for storing the media stream file of the consolidation form received;
Described playing module 43, for utilizing each frame data in this description document acquisition data file.
Further, in described data file, each frame data is arranged in order according to its frame number order from small to large; Frame data are placed according to its frame number, is convenient to the descriptor of parsing module 32 according to each frame from data file, searches corresponding frame data.In addition, the frame data in described data file also can be placed according to frame number order from big to small successively, can reach equally and be convenient to terminal searches corresponding frame data object according to the descriptor of each frame.
Further, described playing module 43 specifically for:
According to the frame number of each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn;
Further, after extracting corresponding frame data, institute's playing module 43 is also for playing the corresponding frame data extracted.
Further, described acquisition module 41 reception server send or the media stream file of consolidation form that sends with the terminal that this device sets up point to point connect.
Above-mentioned decoding device is by obtaining the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described; Described decoding device is according to the descriptor of each frame number read from description document, from described data file, read corresponding frame data and play, thus solving when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
The embodiment of the present invention additionally provides a kind of media stream transportation system, and described transmission system comprises above-mentioned code device and above-mentioned decoding device; Concrete:
Described code device, for by server parses source media stream file, obtain each frame data, and comprise the description document of descriptor of each frame data, and description document and the data file comprising each frame data are formed the media stream file of consolidation form, and send to terminal;
Wherein, the process utilizing described code device to carry out encoding comprises:
From the media stream file of source, read the decoder identification information of carrying, according to described decoder identification information, obtain corresponding decoder;
Utilize the decoder of described acquisition, source media stream file is resolved, generate the source media stream file after resolving;
The frame data of filtering wherein in each frame in source media stream file analytically, obtain the description document of the descriptor comprising each frame, wherein, described descriptor is the guidance code of each frame, and described guidance code comprises the frame type of each frame, the size for the frame number and each frame data of determining the position of each frame data in described data file;
From the source media stream file after described parsing, extract each frame data, obtain the data file comprising each frame data;
Generate the media stream file comprising the consolidation form of described description document and data file.
Described decoding device, for the media stream file of the consolidation form that reception server sends, and data therefrom file and description document; Utilize each frame data in this description document acquisition data file, and play.Concrete, the decoding device that described decoding device and the embodiment of the present invention three provide.
Wherein, the process utilizing described decoding device to carry out decoding comprises:
Detect the request whether having the media stream file obtaining consolidation form, when the request of the media stream file obtaining consolidation form being detected, end side sends the request of the media stream file obtaining consolidation form to media stream server, obtain media stream file from server side;
The media stream file of the consolidation form that receiving media streaming server sends, and therefrom obtain description document and data file, be stored in end side;
According to the request of playing, from description document, search the descriptor of the frame data required for broadcasting, according to the descriptor of these data, end side reads corresponding frame data from described data file.
To sum up, a kind of coding/decoding method and device of Media Stream is embodiments provided; The coding/decoding method of described Media Stream comprises: terminal receives the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described; Terminal utilizes each frame data in this description document acquisition data file, and plays; Achieve the decoding of the media stream file to consolidation form, solve when from server downloads of media stream file, this terminal not supporting the media formats of media stream file downloaded to cause due to terminal can not the problem of media stream file downloaded of normal play.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a coding/decoding method for Media Stream, is characterized in that, described method comprises:
Terminal receives the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Terminal utilizes each frame data in this description document acquisition data file.
2. the method for claim 1, it is characterized in that, the descriptor of each frame data described comprises the guidance code of these frame data, and described guidance code comprises the frame type of these frame data, the size for the frame number and each frame data of determining these frame data position in the data file.
3. method as claimed in claim 2, it is characterized in that, in described data file, each frame data is arranged in order according to its frame number order from small to large.
4. method as claimed in claim 3, is characterized in that, described each frame data utilized in description document acquisition data file, comprising:
The frame number of terminal according to each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn.
5. a decoding device, is characterized in that, described device comprises:
Acquisition module, for receiving the media stream file of consolidation form, and data therefrom file and description document, wherein said data file comprises each frame data of Media Stream, and described description document comprises the descriptor of each frame data described;
Playing module, for utilizing each frame data in this description document acquisition data file.
6. device as claimed in claim 5, it is characterized in that, the descriptor of each frame data described comprises the guidance code of these frame data, and described guidance code comprises the frame type of each frame, the size for the frame number and frame data of determining frame position.
7. device as claimed in claim 6, it is characterized in that, in described data file, each frame data is arranged in order according to its frame number order from small to large.
8. device as claimed in claim 7, is characterized in that, described playing module specifically for:
According to the frame number of each frame data in description document and the size of these frame data, according to frame number ascending extract corresponding frame data successively in turn.
9. device as claimed in claim 5, is characterized in that, the media stream file of consolidation form that is that described acquisition module reception server sends or that send with the terminal that this device sets up point to point connect.
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