CN102014284B - Method, system and device for acquiring parameter set value of video code stream in transcoding business - Google Patents
Method, system and device for acquiring parameter set value of video code stream in transcoding business Download PDFInfo
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- CN102014284B CN102014284B CN201010582833.5A CN201010582833A CN102014284B CN 102014284 B CN102014284 B CN 102014284B CN 201010582833 A CN201010582833 A CN 201010582833A CN 102014284 B CN102014284 B CN 102014284B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The invention discloses a method, system and device for acquiring a parameter set value of video code stream in transcoding business, aiming to solve the problem that videos can not be played due to video code stream decoding errors resulted from that a receiving end is incapable of acquiring the parameter set value of the video code stream in the existing transcoding business. The method is implemented as follows: determining the parameter set value corresponding to the video parameter information and coded format information when analyzing and acquiring the video parameter information and coded format information in a code stream request sent by a receiving end and judging that the corresponding information in SDP (stream download project) information of the video code stream to be sent of a source end is different from the video parameter information and the coded format information, and transmitting the determined parameter set value to the receiving end. In the embodiment of the invention, a code stream converter determines the corresponding parameter set information of the target code stream and provides the determined parameter set information for the receiving end based on the video parameter information and coded format information of the target code stream required by the receiving end, thus the receiving end can decode the received video code stream based on the parameter set value, thereby improving the success rate of decoding the video code stream.
Description
Technical field
The present invention relates to communication technique field, relate in particular to the method, system and device that obtain the parameter set values of video code flow in a kind of transcoding business.
Background technology
H.264 in video encoding standard, used the concept of parameter set, parameter set comprises: sequence parameter collection (Sequence Parameter Set, SPS) and picture parameter set (Picture Parameter Set, PPS).Wherein sequence parameter collection and image parameter are concentrated the optional coding mode comprising as image size, employing, and macro block is to information such as slice groups mappings.An activity command parameter set remains unchanged in an encoded video sequence, and a live image parameter set remains unchanged in a coded image.The value of these two parameter sets, it is the starting stage at session establishment, as a property value of media description in code stream descriptor (SDP), by the source of media, sent to the receiving terminal of media, make the receiving terminal of media normally resolve the follow-up code stream receiving according to SDP information.
Generally, the value of the parameter set carrying in SDP, need source to obtain by reading the mode of the information of the code stream of having encoded, this method is for coding in advance, afterwards when source and receiving terminal have been set up session and carry out SDP to carry out mutual situation more applicable.But while relating to the transcoding business of code stream, because source is different from receiving terminal to the requirement of the video parameters such as the code check of code stream, resolution, the code stream that source sends over, need to be through the conversion of code stream conversion equipment, thereby obtain the required target code stream of receiving terminal, therefore in this process, cannot get parameter set values.
For example, in mobile video monitor business, although mobile network has realized the third generation communication technology (3rd Generation, the 3G)/four generation communication technology (4th Generation, mobile network's technology of a new generation such as 4G), but the relative fixed network of its bandwidth is still lower, for in fixed network than the 512Kbps that is easier to realize, CLV Common Intermediate Format (Common Intermedia Format, CIF) video code flow, still unacceptable in mobile network, can only be by lowering code stream, the modes such as resolution carry out re-sending in mobile network after transcoding to code stream.
Fig. 1 obtains the implementation procedure of video code flow in prior art transit code business, this process comprises the following steps:
S101: receiving terminal sends code stream request, the video parameter information of wherein carrying its target code stream to be received in this code stream request to code stream conversion equipment.
S102: code stream conversion equipment receives after this code stream request, to source request input code flow.
S103: the video parameter information sending according to the receiving terminal receiving, input code flow is changed, be met the target code stream of receiving terminal requirement, the target code stream after conversion is sent to receiving terminal.
S104: receiving terminal is according to the decoder of the parameter information initialization self of the target code stream receiving.
By said process, can be seen, mobile terminal is carrying out when mutual with code stream conversion equipment, before obtaining the video code flow of code stream conversion equipment transmission, just should obtain the parameter set values of the video code flow that sends to self, so that the decoder initialization to self, but in fact because code stream conversion equipment has carried out transcoding to the video code flow obtaining, there is variation in the parameter of this code stream or the form of coding, there is variation in the value of the parameter set of the code stream that this source provides, therefore this code stream conversion equipment cannot obtain the parameter set values of the target code stream that sends to receiving terminal, thereby in the time of may causing receiving terminal to decode broadcasting to the object code stream receiving, there is error, even cause the receiving terminal cannot be to the object code stream the receiving broadcasting of decoding.
Summary of the invention
In view of this, the embodiment of the present invention provides the method, system and device that obtain the parameter set values of video code flow in a kind of transcoding business, the parameter set values that cannot obtain video code flow in order to solve receiving terminal in existing transcoding business, causes video code flow solution code error, the problem that cannot play.
The method of obtaining the parameter set values of video code flow in a kind of transcoding business that the embodiment of the present invention provides, comprising:
Code stream conversion equipment is resolved video parameter information and the encoding format information of carrying in this code stream request that obtains receiving terminal transmission;
The code stream descriptor of the video code flow to be sent sending according to the source of obtaining, whether judgement parsing acquisition video parameter information and encoding format information be identical with the corresponding informance in this code stream descriptor;
When determining when not identical, determine video parameter information and the parameter set values corresponding to encoding format information of this parsings acquisition;
The described parameter set values of determining is sent to receiving terminal, completes the system of obtaining the parameter set values of video code flow in a kind of transcoding business that the session interaction embodiment of the present invention with described receiving terminal provides, comprising:
Receiving terminal, for sending code stream request, wherein carries video parameter information and encoding format information in this code stream request, and the parameter set values of receiving code stream conversion device transmission;
Code stream conversion equipment, be used for receiving the request of receiving terminal transmitted stream, video parameter information and the encoding format information of carrying in this code stream request obtained in parsing, the code stream descriptor of the video code flow to be sent sending according to the source of obtaining, whether judgement parsing acquisition video parameter information and encoding format information be identical with the corresponding informance in this code stream descriptor, when determining when not identical, determine video parameter information and parameter set values corresponding to encoding format information that this parsing obtains, the described parameter set values of determining is sent to receiving terminal, complete the session interaction with described receiving terminal,
Source, for sending the code stream descriptor of video code flow to be sent to code stream conversion equipment.
Get parms in a kind of transcoding business that the embodiment of the present invention the provides device of collection value of video code flow, comprising:
Receive parsing module, for receiving the request of receiving terminal transmitted stream, resolve and obtain video parameter information and the encoding format information of carrying in this code stream request;
Judge module, for according to the code stream descriptor of the video code flow to be sent of the source transmission of obtaining, judges that parsing obtains video parameter information and whether encoding format information is identical with the corresponding informance in this code stream descriptor;
Parameter set generation module, for when judge module judgement is not identical, determines video parameter information and parameter set values corresponding to encoding format information that this parsing obtains;
Sending module, for the described parameter set values of determining is sent to receiving terminal, completes the session interaction with described receiving terminal.
The embodiment of the present invention provides a kind of obtain the parameter set values of video code flow in transcoding business method, system and device, in the method when code stream conversion equipment has obtained after the request of receiving terminal transmitted stream, video parameter information and encoding format information corresponding in this code stream request are obtained in parsing, and the corresponding information in the SDP information of judgement source video code flow to be sent with resolve the video parameter information of acquisition and encoding format information when not identical, determine the parameter set values that this is corresponding with this video parameter information and encoding format information, definite parameter set values is sent to receiving terminal.Because code stream conversion equipment is in embodiments of the present invention according to video parameter information and the encoding format information of the required target code stream of receiving terminal, determined the parameter set information that it is corresponding, and offer receiving terminal, receiving terminal can be decoded to the video code flow receiving according to this parameter set values, thereby improve the success rate to video code flow decoding.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 obtains the implementation procedure of video code flow in prior art transit code business;
In the transcoding business that Fig. 2 provides for the embodiment of the present invention, obtain the process of the parameter set values of video code flow;
In the transcoding business that Fig. 3 provides for the embodiment of the present invention, obtain the structural representation of system of the parameter set values of video code flow;
In a kind of transcoding business that Fig. 4 provides for the embodiment of the present invention, obtain the structural representation of the device of video code flow parameter set values;
Device shown in combination Fig. 4 that Fig. 5 provides for the embodiment of the present invention is to obtaining the parameter set values of video code flow in transcoding business, and the process of obtaining video code flow is elaborated;
Fig. 6 be take RTSP as example for what the embodiment of the present invention provided, to the collection value that gets parms in transcoding business, and describes to the process that receiving terminal returns to target code stream.
Embodiment
The embodiment of the present invention is in order to improve the success rate to video code flow decoding in transcoding business, the method, system and device that obtain video code flow parameter set values in a kind of transcoding business are provided, because code stream conversion equipment is in embodiments of the present invention according to video parameter information and the encoding format information of the required target code stream of receiving terminal, determined the parameter set information that it is corresponding, and offer receiving terminal, receiving terminal can be decoded to the video code flow receiving according to this parameter set values, thereby improve the success rate to video code flow decoding.
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The process of obtaining the parameter set values of video code flow in the transcoding business that Fig. 2 provides for the embodiment of the present invention, this process comprises the following steps:
S201: code stream conversion equipment receives the request of receiving terminal transmitted stream, resolves and obtains video parameter information and the encoding format information of carrying in this code stream request.
In relating to the transcoding business of video code flow, when receiving terminal need to obtain video code flow, need to send code stream request, video parameter information and the encoding format information of wherein in this code stream request, carrying the target code stream that this receiving terminal is to be received to code stream conversion equipment.
Wherein this video parameter information comprises: resolution information, code rate information and frame frequency information.
S202: the code stream descriptor of the video code flow to be sent sending according to the source of obtaining, whether judgement parsing acquisition video parameter information and encoding format information be identical with the corresponding informance in this code stream descriptor.
Code stream conversion equipment receives after the request of receiving terminal transmitted stream, and to the video code flow of source request response contents, but that the video parameter information of this video code flow and encoding format information can be from receiving terminal requests is different.When source receives after the request of code stream conversion equipment, the SDP information of corresponding video code flow is sent to code stream conversion equipment.
S203: when determining when not identical, determine video parameter information and the parameter set values corresponding to encoding format information of this parsings acquisition.
Specifically when determining the parameter set values corresponding with this video parameter information and encoding format information, comprise: according to resolving video parameter information and the encoding format information obtaining, in the representative value information of the parameter set values of preserving at self, search, obtain the parameter set values corresponding with described video parameter information and the immediate representative value of encoding format information.
Further concrete in embodiments of the present invention when code stream conversion equipment is according to resolving video parameter information and the encoding format information obtaining, while obtaining parameter set values corresponding to this video parameter information and encoding format information, this code stream conversion equipment is according to the priority orders of resolution-code check-frame frequency, in the representative value information of the parameter set values of preserving at self, search with this parameter set in the higher parameter set representative value of the goodness of fit, and obtain the parameter set values that this representative value is corresponding, i.e. SPS value and PPS value.
S204: the described parameter set values of determining is sent to receiving terminal, complete the session interaction with described receiving terminal.
When code stream conversion equipment sends to definite parameter set values after receiving terminal, receiving terminal, code stream conversion equipment and source establish the link, when receiving terminal according to the parameter set values that receives to the decoder initialization of self after, to code stream conversion equipment, send the information of obtaining video code flow, this code stream conversion equipment obtains corresponding video code flow from source, and according to the parameter set values providing to receiving terminal, the video code flow obtaining from source is carried out to transcoding, obtain, after corresponding target code stream, this target code stream being sent to receiving terminal.
Due in embodiments of the present invention when code stream conversion equipment receives after the request of receiving terminal transmitted stream, video parameter information and the encoding format information of in this code stream request that parsing is obtained, carrying, when the video parameter information that the corresponding information in the code stream descriptor of judgement source video code flow to be sent obtains from parsing and encoding format information are different, determine video parameter information and parameter set values corresponding to encoding format information that this parsing obtains, and definite parameter set values is sent to receiving terminal, to receive after the video code flow after transcoding, can be according to the parameter set values receiving, the video code flow that this is received carries out correct decoding broadcasting.
The structural representation of system that obtains the parameter set values of video code flow in the transcoding business that Fig. 3 provides for the embodiment of the present invention, this system comprises: receiving terminal 31, code stream conversion equipment 32 and source 33.Wherein,
Receiving terminal 31, for sending code stream request, wherein carries video parameter information and encoding format information in this code stream request, and the parameter set values of receiving code stream conversion device transmission;
Code stream conversion equipment 32, be used for receiving receiving terminal 31 transmitted stream requests, video parameter information and the encoding format information of carrying in this code stream request obtained in parsing, the code stream descriptor of the video code flow to be sent sending according to the source of obtaining, whether judgement parsing acquisition video parameter information and encoding format information be identical with the corresponding informance in this code stream descriptor, when determining when not identical, determine video parameter information and parameter set values corresponding to encoding format information that this parsing obtains, the described parameter set values of determining is sent to receiving terminal, complete the session interaction with described receiving terminal,
Source 33, for sending the code stream descriptor of video code flow to be sent to code stream conversion equipment 32.
In described system,
Described code stream conversion equipment 32 also for, receive the video code flow that source 33 sends, according to the parameter set values that sends to receiving terminal 31, the described video code flow receiving is converted to target code stream, the target code stream after conversion is sent to receiving terminal 31;
Described source 33 also for, to code stream conversion equipment 32, send video code flows;
Described receiving terminal 31 is also for, the target code stream after receiving code stream conversion device 32 transcodings.
When the system of obtaining the parameter set values of video code flow in concrete above-mentioned transcoding business is mobile video monitor system, this receiving terminal is mobile terminal, this code stream conversion equipment is video access unit (VAU), and this source is video monitoring front-end or streaming media server etc.
The structural representation that obtains the device of video code flow parameter set values in a kind of transcoding business that Fig. 4 provides for the embodiment of the present invention, this device comprises:
Receive parsing module 41, for receiving the request of receiving terminal transmitted stream, resolve and obtain video parameter information and the encoding format information of carrying in this code stream request;
Judge module 42, for according to the code stream descriptor of the video code flow to be sent of the source transmission of obtaining, judges that parsing obtains video parameter information and whether encoding format information is identical with the corresponding informance in this code stream descriptor;
Parameter set generation module 43, in when judge module judgement is not identical, determines video parameter information and parameter set values corresponding to encoding format information that this parsing obtains;
Sending module 44, for the described parameter set values of determining is sent to receiving terminal, completes the session interaction with described receiving terminal.
This concrete parameter set generation module 43 comprises: memory cell 431 and determining unit 432, wherein,
Memory cell 431, for the representative value information of the parameter set values of preserving;
Determining unit 432, for video parameter information and the encoding format information obtaining according to parsing, in the representative value information of the parameter set values of preserving at self, search, obtain the parameter set values corresponding with described video parameter information and the immediate representative value of encoding format information.
Parameter set generation module is according to video parameter information and the encoding format information of some typical video code flows, and the parameter information of the encoder of the device at self place, the set that generation comprises a plurality of parameter set values, wherein each parameter set values comprises SPS value and a PPS value of a code stream.Therefore when receiving parsing module, obtained receiving terminal after the video parameter information and encoding format information of the object code stream receiving, the set of the parameter set values of preserving according to self, select therein an immediate parameter set values, select one group of immediate SPS value and PPS value, for transcoding operation afterwards, and set up session interaction with receiving terminal.
In described device,
Described reception parsing module 41 also for, receive the video code flow that source sends;
Described device also comprises:
Transcoding module 45, for according to the parameter set values that sends to receiving terminal, is converted to target code stream by the described video code flow receiving;
Described sending module 44 also for, by conversion after target code stream send to receiving terminal.
Device shown in combination Fig. 4 that Fig. 5 provides for the embodiment of the present invention is to obtaining the parameter set values of video code flow in transcoding business, and the process of obtaining video code flow is elaborated, and this process comprises:
S501: receiving terminal sends code stream request to code stream conversion equipment, wherein carries video parameter information and encoding format information in this code stream request.
S502: code stream conversion equipment receives code stream request, resolves the encoding format information and the video parameter information that obtain the target code stream that this receiving terminal of carrying in this code stream request is to be received.
S503: code stream converting unit is to source request video code flow information, and receive the SDP information of the video code flow that source returns.
S504: judge the corresponding information in the SDP information of the video code flow that this source is returned, encoding format information and the video parameter information of the target code stream to be received with this receiving terminal of self resolving are corresponding identical, when judgement is identical, carry out step S506, otherwise, carry out step S505.
S505: encoding format information and the video parameter information of the target code stream that definite this receiving terminal of resolving is to be received, corresponding parameter set values.
Determine encoding format information and the video parameter information of the target code stream that this receiving terminal is to be received, corresponding SPS value and PPS value.
S506: the parameter set values of obtaining the video code flow of source transmission.
S507: code stream conversion equipment sends to receiving terminal by this parameter set values, completes session interaction with receiving terminal.
S508: code stream conversion equipment receives the video code flow that source sends, and according to the parameter set values that sends to receiving terminal, the video code flow receiving is converted to target code stream.
S509: the target code stream after conversion is sent to receiving terminal.
Code stream conversion equipment and receiving terminal complete before session interaction in the above-described embodiments, video parameter information and the encoding format information of its target code stream to be received sending according to receiving terminal, obtained corresponding parameter set values, therefore in this session interaction process, the parameter set values of receiving terminal target code stream to be received can be sent to receiving terminal, so that receiving terminal receives after the target code stream of code stream conversion equipment transmission, can be according to this parameter set values to this target code stream decoding broadcasting.The scheme that adopts the embodiment of the present invention to provide, can effectively guarantee that receiving terminal is to being correctly decoded of the target code stream receiving, thereby guarantee normally carrying out of code stream business.And this implementation makes receiving terminal when application, no longer be confined to specific decoder, can send its required video parameter information and encoding format information to code stream conversion equipment, code stream conversion equipment can be according to the different requirements of receiving terminal, obtain flexibly its required video code flow, thereby improved the range of application of the business of video code flow.
When code stream conversion equipment can be supported the video code flow of any parameter set values, corresponding information when the SDP information of this code stream conversion equipment judgement source video code flow to be sent, from receiving terminal when the video parameter information of the target code stream receiving is different with encoding format information, can be directly according to video parameter information and the encoding format information of this receiving terminal of resolving acquisition target code stream to be received, determine the parameter set values that it is corresponding, and this definite parameter set values is sent to receiving terminal in session interaction process.
Fig. 6 for the embodiment of the present invention provide to transmit in real time stream media protocol (Real-Time StreamingProtocol, RTSP) be example, to the collection value that gets parms in transcoding business, and describe to the process that receiving terminal returns to target code stream, this process comprises the following steps:
S601: receiving terminal sends code stream request by describing (Describle) request to code stream conversion equipment, the video parameter information of wherein carrying its target code stream to be received in Describle request.
S602: code stream conversion equipment receives the Describle request that receiving terminal sends, according to the content of the code stream of receiving terminal request, to source, send Describle request, the video code flow that request content identical but corresponding video parameter information and encoding format information can be different.
S603: source receives after the Describle request of code stream conversion equipment transmission, obtains the SDP information of corresponding video code stream, and the Describle response message of carrying SDP information is sent to code stream conversion equipment.
S604: code stream conversion equipment judges video parameter information and the encoding format information of the target code stream that the receiving terminal of parsing acquisition is to be received, whether identical with corresponding informance in the SDP information of carrying in this Describle response message, when the determination result is NO, carry out step S605, otherwise, carry out step S607.
S605: according to encoding format information and the video parameter information of this receiving terminal of resolving target code stream to be received, and the representative value information of the parameter set values of self preserving, obtain SPS value and the PPS value corresponding with the immediate representative value of described video parameter information.
S606: according to the SPS value of obtaining and PPS value, and the SDP information of carrying in this Describle response message, generate SPS value and SDP information corresponding to PPS value obtained with this.
S607: SDP information is carried in Describle response message, sends to receiving terminal.
S608: code stream conversion equipment and receiving terminal and source, respectively by Setup Signalling exchange, operation is set up in the link that completes RTSP.
S609: receiving terminal, according to the SDP information receiving, is asked code stream conversion equipment to sending Play after the decoder initialization of self, and by code stream conversion equipment, this Play request is forwarded to source.
S610: source is to code stream conversion equipment output source code stream, and code stream converting unit, according to definite SDP information, converts thereof into corresponding target code stream and sends it to receiving terminal.
S611: receiving terminal, according to the SDP information receiving, is play the target code stream decoding receiving.
The embodiment of the present invention provides a kind of obtain the parameter set values of video code flow in transcoding business method, system and device, in the method when code stream conversion equipment has obtained after the request of receiving terminal transmitted stream, video parameter information and encoding format information corresponding in this code stream request are obtained in parsing, and the corresponding information in the SDP information of judgement source video code flow to be sent with resolve the video parameter information of acquisition and encoding format information when not identical, determine the parameter set values that this is corresponding with this video parameter information and encoding format information, definite parameter set values is sent to receiving terminal.Because code stream conversion equipment is in embodiments of the present invention according to video parameter information and the encoding format information of the required target code stream of receiving terminal, determined the parameter set information that it is corresponding, and offer receiving terminal, receiving terminal can be decoded to the video code flow receiving according to this parameter set values, thereby improve the success rate to video code flow decoding.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in invention contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from the spirit and scope of the present invention, all should be in the protection range of the appended claim of the present invention.
Claims (10)
1. in transcoding business, obtain a method for the parameter set values of video code flow, it is characterized in that, comprising:
Code stream conversion equipment receives the request of receiving terminal transmitted stream, resolves and obtains video parameter information and the encoding format information of carrying in this code stream request;
The code stream descriptor of the video code flow to be sent sending according to the source of obtaining, whether judgement parsing acquisition video parameter information and encoding format information be identical with the corresponding informance in this code stream descriptor;
When determining when not identical, determine video parameter information and the parameter set values corresponding to encoding format information of this parsings acquisition;
The described parameter set values of determining is sent to receiving terminal, complete the session interaction with described receiving terminal.
2. the method for claim 1, is characterized in that, determines that parameter set values corresponding to video parameter information that this parsing is obtained comprises:
According to resolving video parameter information and the encoding format information obtaining, in the representative value information of the parameter set values of preserving at self, search, obtain the parameter set values corresponding with described video parameter information and the immediate representative value of encoding format information.
3. the method for claim 1, is characterized in that, described video parameter information comprises:
Resolution information, code rate information and frame frequency information.
4. the method for claim 1, is characterized in that, described parameter set values comprises:
Sequence parameter collection value and picture parameter set value.
5. method as claimed in claim 1 or 2, is characterized in that, described method also comprises:
Receive the video code flow that source sends;
According to the parameter set values that sends to receiving terminal, the described video code flow receiving is converted to target code stream;
Described target code stream is sent to receiving terminal.
6. in transcoding business, obtain a system for the parameter set values of video code flow, it is characterized in that, described system comprises:
Receiving terminal, for sending code stream request, wherein carries video parameter information and encoding format information in this code stream request, and the parameter set values of receiving code stream conversion device transmission;
Code stream conversion equipment, be used for receiving the request of receiving terminal transmitted stream, video parameter information and the encoding format information of carrying in this code stream request obtained in parsing, the code stream descriptor of the video code flow to be sent sending according to the source of obtaining, whether judgement parsing acquisition video parameter information and encoding format information be identical with the corresponding informance in this code stream descriptor, when determining when not identical, determine video parameter information and parameter set values corresponding to encoding format information that this parsing obtains, the described parameter set values of determining is sent to receiving terminal, complete the session interaction with described receiving terminal,
Source, for sending the code stream descriptor of video code flow to be sent to code stream conversion equipment.
7. system as claimed in claim 6, is characterized in that, in described system,
Described code stream conversion equipment also for, receive the video code flow that source sends, according to the parameter set values that sends to receiving terminal, the described video code flow receiving is converted to target code stream, the target code stream after conversion is sent to receiving terminal;
Described source also for, to code stream conversion equipment, send video code flow;
Described receiving terminal is also for, the target code stream after receiving code stream conversion device transcoding.
8. in transcoding business, obtain a device for the parameter set values of video code flow, it is characterized in that, described device comprises:
Receive parsing module, for receiving the request of receiving terminal transmitted stream, resolve and obtain video parameter information and the encoding format information of carrying in this code stream request;
Judge module, for according to the code stream descriptor of the video code flow to be sent of the source transmission of obtaining, judges that parsing obtains video parameter information and whether encoding format information is identical with the corresponding informance in this code stream descriptor;
Parameter set generation module, for when judge module judgement is not identical, determines video parameter information and parameter set values corresponding to encoding format information that this parsing obtains;
Sending module, for the described parameter set values of determining is sent to receiving terminal, completes the session interaction with described receiving terminal.
9. device as claimed in claim 8, is characterized in that, described parameter set generation module comprises:
Memory cell, for the representative value information of the parameter set values of preserving;
Determining unit, for according to resolving video parameter information and the encoding format information obtaining, searches in the representative value information of the parameter set values of preserving at self, obtains the parameter set values corresponding with described video parameter information and the immediate representative value of encoding format information.
10. install as claimed in claim 8 or 9, it is characterized in that, in described device,
Described reception parsing module also for, receive the video code flow that source sends;
Described device also comprises:
Transcoding module, for according to the parameter set values that sends to receiving terminal, is converted to target code stream by the described video code flow receiving;
Described sending module also for, described target code stream is sent to receiving terminal.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010582833.5A CN102014284B (en) | 2010-12-10 | 2010-12-10 | Method, system and device for acquiring parameter set value of video code stream in transcoding business |
| RU2013131755/08A RU2540776C1 (en) | 2010-12-10 | 2011-12-12 | Method, system and device to produce value of set of video code stream parameters in transcoding service |
| PCT/CN2011/083825 WO2012075968A1 (en) | 2010-12-10 | 2011-12-12 | Method, system and device for acquiring parameter set value of video code stream in transcoding service |
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| CN201010582833.5A CN102014284B (en) | 2010-12-10 | 2010-12-10 | Method, system and device for acquiring parameter set value of video code stream in transcoding business |
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| CN102014284A CN102014284A (en) | 2011-04-13 |
| CN102014284B true CN102014284B (en) | 2014-09-10 |
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| CN201010582833.5A Expired - Fee Related CN102014284B (en) | 2010-12-10 | 2010-12-10 | Method, system and device for acquiring parameter set value of video code stream in transcoding business |
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|---|---|---|---|---|
| CN102014284B (en) * | 2010-12-10 | 2014-09-10 | 中兴通讯股份有限公司 | Method, system and device for acquiring parameter set value of video code stream in transcoding business |
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| CN110198474B (en) * | 2018-02-27 | 2022-03-15 | 中兴通讯股份有限公司 | Code stream processing method and device |
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| RU2540776C1 (en) | 2015-02-10 |
| RU2013131755A (en) | 2015-01-20 |
| CN102014284A (en) | 2011-04-13 |
| WO2012075968A1 (en) | 2012-06-14 |
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