CN106658225B - The setting of Video Expansion code and video broadcasting method and system - Google Patents
The setting of Video Expansion code and video broadcasting method and system Download PDFInfo
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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
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
The present invention relates to a kind of setting of Video Expansion code and video broadcasting method and system, above-mentioned Video Expansion code setting method, includes the following steps: to read extension information from preset video file, extended code is arranged according to the extension information；Network abstraction level unit is identified from the frame of video file, and identifies the extended field in the network abstraction level unit；The extended code is added to extended field, updates network abstraction level unit, and save the video file.Video Expansion code setting provided by the invention and video broadcasting method and system can make corresponding video carry more information, improve the information carrying amount of corresponding video, and above-mentioned video can play out in more players (such as the extension corresponding special player of information or other universal players), advantageously reduce the process that above-mentioned user plays video.
Description
Technical field
The present invention relates to video signal treatment technique fields, more particularly to a kind of setting of Video Expansion code and video playing
Method and system.
Background technique
Video can carry various dynamics and static information, be of crucial importance to information transmission.Usual situation
Under, above-mentioned video is to carry out the processing such as encoding to information such as associated video files and its frames being formed by, the frame of video file
Frame includes two levels: Video coding level (VCL) and network abstraction level (NAL)；Network abstraction level passes through net therein
Network is abstracted level units store video formation information and the corresponding video player characteristic information of above-mentioned video.
Traditional scheme encodes obtained video to above-mentioned video file and is typically only capable in universal player and dedicated play
It is played out on a kind of player among device, there is certain broadcasting limitation.
Summary of the invention
Based on this, it is necessary to which the video obtained for traditional scheme has certain the technical issues of playing limitation, provides
A kind of setting of Video Expansion code and video broadcasting method and system.
A kind of Video Expansion code setting method, includes the following steps:
Extension information is read from preset video file, and extended code is arranged according to the extension information；
Network abstraction level unit is identified from the frame of video file, and is identified in the network abstraction level unit
Extended field；
The extended code is added to extended field, updates network abstraction level unit, and save the video file.
A kind of Video Expansion code setting system, comprising:
Setup module is arranged according to the extension information and extends for reading extension information from preset video file
Code；
Identification module for identifying network abstraction level unit from the frame of video file, and identifies that the network is taken out
As the extended field in level units；
Adding module updates network abstraction level unit, and save institute for the extended code to be added to extended field
State video file.
It is corresponding can will to read extension information for above-mentioned Video Expansion code setting method and system in preset video file
Extended code directly saves the extended field into network abstraction level unit, keeps above-mentioned network abstraction level unit above-mentioned in carrying
On the basis of the corresponding extension information of extended code, the other information carried originally can also be retained, made entrained by corresponding video
Information content is effectively expanded；It both can be with according to above-mentioned network abstraction level unit and corresponding video file video generated
It is played out, and is can use in addition to special disposal extended code by playing the corresponding special player of above-mentioned extension information
Other players (such as universal player) play out, and effectively increase the applicability of corresponding video.
A kind of video broadcasting method, includes the following steps:
The video generated according to video file is sent to destination player；Wherein, the video file is according to above-mentioned
Obtained by Video Expansion code setting method；
The destination player reads the expansion that the network abstraction level unit carries after receiving and decoding the video
Show code and general code；Wherein, the general code is the content of the universal field carrying of the network abstraction level unit；
The destination player respectively parses the extended code and general code, and according to described in parsing result broadcasting
Video.
A kind of audio/video player system, comprising:
Sending module, for the video generated according to video file to be sent to destination player；Wherein, the video text
Part is to be arranged obtained by system according to above-mentioned Video Expansion code；
Decoder module reads the network abstract layer for the destination player after receiving and decoding the video
The extended code and general code that face unit carries；Wherein, the general code is that the universal field of the network abstraction level unit is taken
The content of band；
Playing module respectively parses the extended code and general code for the destination player, and according to solution
It analyses result and plays the video.
Above-mentioned video broadcasting method and system, can be corresponding to the corresponding general information of general code in video and extended code
Extension information play out, ensure that the information content of its playing display, effectively increase corresponding result of broadcast.
Detailed description of the invention
Fig. 1 is the Video Expansion code setting method flow chart of one embodiment；
Fig. 2 is that system structure diagram is arranged in the Video Expansion code of one embodiment；
Fig. 3 is the video broadcasting method flow chart of one embodiment；
Fig. 4 is the audio/video player system structural schematic diagram of one embodiment.
Specific embodiment
With reference to the accompanying drawing to the specific embodiment party of Video Expansion code setting of the invention and video broadcasting method and system
Formula is described in detail.
It show the Video Expansion code setting method flow chart of one embodiment with reference to Fig. 1, Fig. 1, includes the following steps:
S10, reads extension information from preset video file, and extended code is arranged according to the extension information；
Above-mentioned video file is the text of the contents such as the characteristic information for storing related playing material and corresponding player
Part.Material title or material keyword etc., which is usually arranged, in playing material in video file can uniquely characterize playing material
Identifier.Pass through above-mentioned identifier, it can be determined that whether corresponding playing material can be in common player (user's routine use
Various players) in play, the above-mentioned material that can be played in common player and its relevant information are general information.On
Certain information in video file are stated, due to its specific format or attribute, can not be played in common player, need to lead to
It crosses the special player being specially arranged and realizes its broadcasting, these information are known as extending information, it is generally the case that storage is above-mentioned general
Comprising extension information in the middle part of the video file of information, above-mentioned video can be written into the corresponding extension information of special player in advance
File, making video file includes extension information on the basis of including general information；It is read again by identifier or format characteristic
Take whether playing material and relevant information in video file are general information or extension information.
During above-mentioned video file encodes production corresponding video, it can be arranged according to above-mentioned general information general
Extended code is arranged according to above-mentioned extension information in code, and above-mentioned general code and extended code are written to the corresponding position of video file frame,
The video for obtaining next code can not only carry general information, but also can carry extension information.Above-mentioned extended code may include
Head character (HEADER) and content character (CONTENT), the length of HEADER are usually 1Byte, may include 1bit taboo
Stop bit, 2bit importance indicating bit, 5bit NAL type bit；CONTENT expands for recording the extension information content, indefinite length
It is unlimited to open up information content type, it can self-defining as needed.
In one embodiment, above-mentioned extended code may include head character and content character.
Extended code in the present embodiment includes head character and content character, can be by above-mentioned head character to corresponding code
Type is identified, to confirm above-mentioned extended code, is conducive to quickly search above-mentioned extended code, and then searches above-mentioned extension
The corresponding extension information of code.
S20 identifies network abstraction level unit from the frame of video file, and identifies the network abstraction level unit
In extended field；
(as H.264/AVC) in video encoding standard, the frame of video file can be divided into two levels: Video coding
Level (VCL) and network abstraction level (NAL).Wherein, for Video coding level for carrying data content, network abstraction level can
To carry associated formatting data or head information etc.；The frame of video file passes through above-mentioned Video coding level and network abstraction
The collaborative work of level, to guarantee the integrality of corresponding contents, and wherein data are transmitted in respective channels and storage medium
With the fairness of processing.NALU (network abstraction level unit) is the basic syntax structure of NAL, and it includes head information (usually
One byte) and from VCL be known as raw byte sequence payload (RBSP) byte stream.Comprising NALU in NALU information
Type information NAL_UNIT_TYPE shows that it includes the type of the content of payload.
In traditional scheme, NALU is network abstraction layer unit, and in common video file, NALU only saves video data
Information is extended without saving.There was only 8 positions on the head of NALU, wherein NAL_UNIT_TYPE accounts for 5, can indicate 0~31.
Wherein 0~12 is the types value for having clear purposes, and 24~31 be not used types value.The present invention is exactly to use between 24~31
Value characterize extension NALU (extension information corresponding extended code).Do not empty what network abstraction level unit was stored simultaneously
Content, but extended network Abstraction Layer units are generated to store extension information and the extended network Abstraction Layer units are written to view
In frequency file or video flowing.
Above-mentioned steps S20 can be identified in NALU not according to the setting feature or relevant criterion of the frame of video file
The field (extended field) used, is used to above-mentioned extended field, so that NALU carries more information.
In one embodiment, above-mentioned also after the process for identifying the extended field in the network abstraction level unit
To include:
The universal field in the video file in network abstraction level unit is read, the universal field is kept to be stored
Content it is constant.
The present embodiment in network abstraction level unit extended field and universal field identify respectively, with keep on
The Information invariability of universal field carrying is stated, then the not used extended field of traditional scheme is used, to improve above-mentioned network
The utilization rate of abstract level units can improve information content entrained by corresponding video on the basis of guaranteeing screen quality.
The extended code is added to extended field, updates network abstraction level unit by S30, and saves the video text
Part.
Above-mentioned steps are added to the extension being not used by network abstraction level unit for the corresponding extended code of information is extended
Field, and the content for keeping universal field to record is constant, and above-mentioned network abstraction level unit is allow to carry general information and expansion
Information is opened up, carrying contains much information；According to the video that the network abstraction level unit that above-mentioned steps S30 is saved generates, both may be used
To play using universal player, the special player being specially arranged for extension information can also be used to play, had preferable
Result of broadcast.
It is straight can will to extend the corresponding extended code of information for Video Expansion code setting method provided by the invention in video file
The extended field saved into network abstraction level unit is connect, above-mentioned network abstraction level unit is made to carry above-mentioned extended code pair
On the basis of the extension information answered, the other information carried originally can also be retained, obtain information content entrained by corresponding video
Expand to effective；Broadcasting can both be passed through according to above-mentioned network abstraction level unit and corresponding video file video generated
The corresponding special player of above-mentioned extension information plays out, and can use other broadcastings in addition to special disposal extended code
Device (such as universal player) plays out, and effectively increases the applicability of corresponding video.
In one embodiment, above-mentioned that extension information is read from preset video file, it is set according to the extension information
Can also include: before the step of setting extended code
Obtaining needs extension information to be shown, and video file is written in the extension information.
The corresponding playing material of the available first extension information of the present embodiment, above-mentioned playing material can be according to corresponding video
Corresponding scene determines, for example, may include each on automobile for characterizing playing material corresponding to the video of vehicle condition
The measurement amount of measuring instrument and measured value etc.；The broadcasting attribute of playing material can be set according to the specific feature of playing material
It sets.Extension information is determined whether it is by the corresponding format characteristic of playing material.By above-mentioned playing material to extend letter
Video file is written in the form of breath.
The present embodiment will extend information be written video file, make above-mentioned video file include general information and extension information,
To guarantee to obtain the fairness of extension information from video file.
As one embodiment, can within the scope of certain playing material and its relevant information be encrypted, for example,
The corresponding playing material of extension information and its relevant information are encrypted, to improve the playing material in above range
And its safety of relevant information.
In one embodiment, the extended code is added to extended field, updates network abstraction level unit, and protect
After the process for depositing the video file, can also include:
Obtain the corresponding expanding clock information of extension information, according to corresponding system clock to the expanding clock information into
Row synchronization process.
The present embodiment can synchronize processing, above-mentioned universal timepiece information with expanding clock information and universal timepiece information
It may include generalized time stamp information, expanding clock information may include expansion time stamp information, above-mentioned will can lead to accordingly
The processing such as merge with timestamp information and expansion time stamp information, to realize corresponding universal timepiece information and expanding clock letter
The synchronization process of breath.
After the expanding clock information to network abstraction level unit synchronizes processing, above-mentioned synchronization process can be saved
Network abstraction level unit afterwards.
The present embodiment synchronizes processing to expanding clock information, makes corresponding general information and extension information in rear continued broadcasting
The unification or coordination of time is realized during putting, to guarantee its result of broadcast.
Refering to what is shown in Fig. 2, system structure diagram is arranged in the Video Expansion code that Fig. 2 is one embodiment, comprising:
Setup module 10 is arranged according to the extension information and expands for reading extension information from preset video file
Show code；
Identification module 20 for identifying network abstraction level unit from the frame of video file, and identifies the network
Extended field in abstract level units；
Adding module 30 updates network abstraction level unit, and save for the extended code to be added to extended field
The video file.
In one embodiment, system is arranged in above-mentioned Video Expansion code, further includes:
Module is kept, for reading the universal field in the video file in network abstraction level unit, described in holding
The content that universal field is stored is constant.
In one embodiment, system is arranged in above-mentioned Video Expansion code, further includes:
Module is obtained, needs extension information to be shown for obtaining, video file is written into the extension information.
Video Expansion code setting system and Video Expansion code setting method provided by the invention one provided by the invention are a pair of
It answers, is suitable for Video Expansion in the technical characteristic and its advantages of the embodiment elaboration of the Video Expansion code setting method
In the embodiment of code setting system, hereby give notice that.
Refering to what is shown in Fig. 3, Fig. 3 is the video broadcasting method flow chart of one embodiment, include the following steps:
The video generated according to video file is sent to destination player by S60；Wherein, according to the video file
Obtained by above-mentioned Video Expansion code setting method；
S70, the destination player read the network abstraction level unit and carry after receiving and decoding the video
Extended code and general code；Wherein, the general code is the content of the universal field carrying of the network abstraction level unit；
S80, the destination player respectively parse the extended code and general code, and play according to parsing result
The video.
Above-mentioned destination player is the special player for playing the corresponding extension information of extended code.Above-mentioned video is sent out
It send to destination player, destination player can read NALU therein, identify what the universal field in above-mentioned NALU was recorded
The extended code that general code and extended field are recorded, parses above-mentioned extended code and general code, and according to above-mentioned parsing knot
Fruit carries out video playing, so that destination player is being can be realized simultaneously general information and is being extended the broadcasting of information, has preferable
Result of broadcast.
If the video encoded according to above-mentioned method for video coding is sent to universal player, universal playing
Device can identify the general code that NALU is carried after receiving and decoding the video, and ignore the extended code in above-mentioned NALU, right
Its general code identified is parsed, and plays the corresponding general information of general code according to parsing result.In this way, according to above-mentioned view
The video that frequency coding method is encoded can not only play in universal player, but also can broadcast in special player
It puts, the applicability and use value of corresponding video can be improved.
Video broadcasting method provided in this embodiment, can be to the corresponding general information of general code in video and extended code
Corresponding extension information plays out, and ensure that the information content of its playing display, effectively increases corresponding result of broadcast.
In one embodiment, above-mentioned that extension information is read from preset video file, it is set according to the extension information
Can also include: after setting the process of extended code
The corresponding extension keyword of the extension information is set；
After the process that the destination player respectively parses the extended code and general code, can also include:
The destination player reads the extension keyword of user's input, and it includes described for searching according to the extension keyword
The extended code for extending keyword, parses the extended code searched, obtains the corresponding video content of the extended code, plays
The video content.
It, can be with if inquiring the extension information of its concern in the video that user needs destination player to play in the present embodiment
Corresponding extension keyword is inputted to destination player, searching destination player according to above-mentioned extension keyword includes the expansion
The extended code of keyword is opened up, then the extended code of lookup is parsed, so that destination player is played extension keyword corresponding
Content, i.e., broadcasting user concern extension information；The broadcasting effect that this further improves above-mentioned videos in destination player
Fruit.
Above-mentioned video broadcasting method can be applied in the playing process of elevator monitoring video, if the elevator of elevator device
Running state information (including but not limited to floor, direction, weighing, switch gate) and fault message only need in special player
It plays, the broadcasting attribute of the playing material can be set according to the relevant feature of special player, believe elevator operation
Breath and these playing materials of fault message become the extension information in corresponding video file, according to above-mentioned elevator operation information
And corresponding extended code is arranged in fault message, and above-mentioned extended code is added to extended field, takes out to the network of addition extended field
As level units progress coded treatment, the video that coded treatment is obtained is sent to special player, and above-mentioned special player connects
Receive and decode the video, the extended code and general code that identification network abstraction level unit carries, respectively to extended code therein
It is parsed with general code, and is played out according to parsing result, make special player on the basis of playing same information, also
Can be with simultaneous display elevator operation information and elevator faults information, various one mesh of information when recalling to elevator faults video
So.The video that above-mentioned coded treatment obtains can also be sent to universal player player, to video carry general information into
The conventional decoding of row plays, and so that user is can use universal player and watches the general information that above-mentioned video carries.
In practical applications, video bicycle recorder can be (including but unlimited by vehicle-state while recorded video
In GPS information, oil mass, direction, brake, throttle, speed) simultaneously reference format is written video record in, use universal playing
Device only plays video when playing, these records of simultaneous display car status information when playing video using special player Shi Zeke
The extension information being arranged when video processed.It is being that corresponding playing material carries out coded treatment, during obtaining video, can regarding
Frequency extension NALU in store special efficacy script, using universal player broadcast with when only play video, when being played using special player
It can then call script to carry out dynamic special effect processing to video when playing video, keep video more ornamental.It can also be
The keyword message that video pictures are stored in Video Expansion NALU, can be directly according to keyword pair when being played using special player
Video carries out quick-searching and picture positions.
Refering to what is shown in Fig. 4, Fig. 4 is the audio/video player system structural schematic diagram of one embodiment, comprising:
Sending module 60, for the video generated according to video file to be sent to destination player；Wherein, the video
File is to be arranged obtained by system according to above-mentioned Video Expansion code；
Decoder module 70 reads the network abstraction for the destination player after receiving and decoding the video
The extended code and general code that level units carry；Wherein, the general code is the universal field of the network abstraction level unit
The content of carrying；
Playing module 80 respectively parses the extended code and general code for the destination player, and foundation
Parsing result plays the video.
Audio/video player system provided by the invention and video broadcasting method provided by the invention correspond, in the video
The technical characteristic and its advantages that the embodiment of playback method illustrates are suitable for the embodiment of audio/video player system, hereby
Statement.
Video Expansion code provided by the invention setting, method for video coding and system, to not making in the NALU of video file
Field is identified, and carries out extending information pair in video file using the unused field (extended field) of above-mentioned identification
The record for the extended code answered allows corresponding video to carry general information and extension information simultaneously, effectively increases video
Information carrying amount；After above-mentioned video carries general information and extension information, it can not only be read by universal player, but also can be by it
The special player that he is used to play content corresponding to extension information is read, and applicability is improved significantly.Based on upper
The video broadcasting method and system of the setting of Video Expansion code, method for video coding and system are stated, it is corresponding to general code in video
General information and the corresponding extension information of extended code play out, and ensure that the information content of its playing display, with higher
Result of broadcast.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of Video Expansion code setting method, which comprises the steps of:
Extension information is read from preset video file, and extended code is arranged according to the extension information；The video file is
For storing the file of the characteristic information of playing material and player；The extension information is some in the video file
Information needs the special player by being specially arranged to realize corresponding video due to the specific format of these information or attribute
The broadcasting of file；
Network abstraction level unit is identified from the frame of video file, and identifies the extension in the network abstraction level unit
Field；
The extended code is added to extended field, updates network abstraction level unit, and save the video file.
2. Video Expansion code setting method according to claim 1, which is characterized in that the extended code includes head character
With content character.
3. Video Expansion code setting method according to claim 1, which is characterized in that identifying the network abstraction level
After the process of extended field in unit further include:
The universal field in the video file in network abstraction level unit is read, keeps the universal field to be stored interior
Hold constant.
4. Video Expansion code setting method according to any one of claims 1 to 3, which is characterized in that described from preset
Further include before the step of reading extension information in video file, extended code is set according to the extension information；
Obtaining needs extension information to be shown, and video file is written in the extension information.
5. system is arranged in a kind of Video Expansion code characterized by comprising
Extended code is arranged according to the extension information for reading extension information from preset video file in setup module；Institute
Stating video file is the file for storing the characteristic information of playing material and player；The extension information is the video
Some information in file need the special player by being specially arranged due to the specific format of these information or attribute
Realize the broadcasting of corresponding video file；
Identification module for identifying network abstraction level unit from the frame of video file, and identifies the network abstract layer
Extended field in the unit of face；
Adding module updates network abstraction level unit, and save the view for the extended code to be added to extended field
Frequency file.
6. system is arranged in Video Expansion code according to claim 5, which is characterized in that further include:
Module is kept, for reading the universal field in the video file in network abstraction level unit, is kept described general
The content that field is stored is constant.
7. system is arranged in Video Expansion code according to claim 5 or 6, which is characterized in that further include:
Module is obtained, needs extension information to be shown for obtaining, video file is written into the extension information.
8. a kind of video broadcasting method, which comprises the steps of:
The video generated according to video file is sent to destination player；Wherein, the video file is according to claim 1
To obtained by 4 described in any item Video Expansion code setting methods；
The destination player reads the extended code that the network abstraction level unit carries after receiving and decoding the video
And general code；Wherein, the general code is the content of the universal field carrying of the network abstraction level unit；
The destination player respectively parses the extended code and general code, and plays the view according to parsing result
Frequently.
9. video broadcasting method according to claim 8, which is characterized in that described read from preset video file is expanded
Information is opened up, after the process of the extension information setting extended code further include:
The corresponding extension keyword of the extension information is set；
After the process that the destination player respectively parses the extended code and general code, further includes:
The destination player reads the extension keyword of user's input, and searching according to the extension keyword includes the extension
The extended code of keyword parses the extended code searched, and obtains the corresponding video content of the extended code, described in broadcasting
Video content.
10. a kind of audio/video player system characterized by comprising
Sending module, for the video generated according to video file to be sent to destination player；Wherein, the video file is
According to obtained by the described in any item Video Expansion code setting systems of claim 5 to 7；
Decoder module reads the network abstraction level list for the destination player after receiving and decoding the video
The extended code and general code that member carries；Wherein, the general code is that the universal field of the network abstraction level unit carries
Content；
Playing module respectively parses the extended code and general code for the destination player, and ties according to parsing
The video is put in carpostrote.
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| CN110248221A (en) * | 2019-06-18 | 2019-09-17 | 北京物资学院 | A kind of video ads dynamic insertion method and device |
| CN111200760A (en) * | 2019-11-26 | 2020-05-26 | 安徽文香信息技术有限公司 | Data processing method and device and electronic equipment |
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