CN105554513A - Panoramic video transmission method and system based on H.264 - Google Patents
Panoramic video transmission method and system based on H.264 Download PDFInfo
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- CN105554513A CN105554513A CN201510910564.3A CN201510910564A CN105554513A CN 105554513 A CN105554513 A CN 105554513A CN 201510910564 A CN201510910564 A CN 201510910564A CN 105554513 A CN105554513 A CN 105554513A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004513 sizing Methods 0.000 claims description 7
- 230000003993 interaction Effects 0.000 abstract description 8
- 238000013507 mapping Methods 0.000 abstract 3
- 238000000638 solvent extraction Methods 0.000 abstract 2
- 238000007781 pre-processing Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 230000001195 anabolic effect Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
Classifications
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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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
-
- 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
- H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
-
- 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
- H04N21/2355—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving reformatting operations of additional data, e.g. HTML pages
- H04N21/2356—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving reformatting operations of additional data, e.g. HTML pages by altering the spatial resolution
-
- 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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
- H04N21/25808—Management of client data
- H04N21/25825—Management of client data involving client display capabilities, e.g. screen resolution of a mobile phone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Computer Graphics (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention discloses a panoramic video transmission method and system based on H.264, and the method comprises the steps: obtaining a plurality of corresponding H.264 partitioned videos and a partitioned mapping configuration file through the partitioning pre-processing of a panoramic video, wherein the partitioned mapping configuration file is used for recognizing the video information of the H.264 partitioned videos; carrying out the corresponding searching of the plurality of H.264 partitioned videos according to the size of a video play window, the window position and the partitioned mapping configuration file, enabling the searched H.264 partitioned videos to be combined into a corresponding H.264 video stream, and transmitting the H.264 video stream to a client. The method can quickly extract a local image video of a panoramic image compressed video without compressing a panoramic video through employing the partitioning characteristics of H.264 coding, reduces the data processing burden of a server, improves the interaction response capability, and brings great convenience.
Description
Technical field
The present invention relates to video technique field, in particular a kind of based on panoramic video transmission method H.264 and system.
Background technology
Panoramic picture has due to it the large picture size that compares and needs in the transmission to take large bandwidth.A kind of method reducing transmission bandwidth is the image only transmitting current viewing window size.Adopt in this way, server is transferred to user side after must decompressing to the compression panoramic picture stored and intercepting the contracting of viewing video in window weight again, propose very large data processing load to server like this, interaction response ability, brings inconvenience to user.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of based on panoramic video transmission method H.264 and system, and the data processing load being intended to solve server during panoramic video transmission in prior art is high, the problem of interaction response ability.
The technical scheme that technical solution problem of the present invention adopts is as follows:
Based on a panoramic video transmission method H.264, wherein, comprising:
A, burst preliminary treatment is carried out to panoramic video, obtain corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video;
B, according to the described multiple H.264 burst video of video playback window size, the window's position and described burst Map Profile correspondence retrieval, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client.
Described based on panoramic video transmission method H.264, wherein, described steps A specifically comprises:
A1, panoramic video is divided into multiple by predetermined sizing grid and the corresponding H.264 video being compressed into single group respectively; Correspondence obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
Described based on panoramic video transmission method H.264, wherein, described burst Map Profile comprises: for identifying the grid arrangement of burst video, picture parameter set and sequence parameter set video information.
Described based on panoramic video transmission method H.264, wherein, described step B specifically comprises:
B1, window size, the window's position and described burst Map Profile according to the video playback of client-requested, multiple H.264 burst video described in dynamic retrieval;
B2, carry out parsing network abstract layer macroblock syntax to the H.264 burst video that correspondence retrieves, the H.264 burst video retrieved, to sheet group, is combined in corresponding single H264 video flowing, and sends to client by permutatation macro block.
Based on a panoramic video transmission system H.264, wherein, comprising:
Burst pretreatment module, for carrying out burst preliminary treatment to panoramic video, obtains corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video;
Sheet group encapsulated delivery module, for retrieving described multiple H.264 burst video according to video playback window size, the window's position and described burst Map Profile correspondence, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client.
Described based on panoramic video transmission system H.264, wherein, described burst pretreatment module comprises:
Burst pretreatment unit, for being divided into multiple by panoramic video by predetermined sizing grid and the corresponding H.264 video being compressed into single group respectively; Correspondence obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
Described based on panoramic video transmission system H.264, wherein, described burst Map Profile comprises: for identifying the grid arrangement of burst video, picture parameter set and sequence parameter set video information.
Described based on panoramic video transmission system H.264, wherein, described group encapsulated delivery module comprises:
Retrieval unit, for the window size of the video playback according to client-requested, the window's position and described burst Map Profile, multiple H.264 burst video described in dynamic retrieval;
Encapsulated delivery unit, carries out parsing network abstract layer macroblock syntax for the H.264 burst video retrieved correspondence, and the H.264 burst video retrieved, to sheet group, is combined in corresponding single H264 video flowing, and sends to client by permutatation macro block.
Provided by the present invention a kind of based on panoramic video transmission method H.264 and system, the data processing load efficiently solving server during panoramic video transmission in prior art is high, the problem of interaction response ability, by carrying out burst preliminary treatment to panoramic video, obtain corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video; According to the described multiple H.264 burst video of video playback window size, the window's position and described burst Map Profile correspondence retrieval, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client; Utilize the burst characteristic of H.264 encoding, can topography's video of rapid extraction panoramic picture compressed video without the need to decompress(ion) aphorama pollakicoprosis, reduce the data processing load of server, improve interaction response ability, bring to user and facilitate greatly.
Accompanying drawing explanation
Fig. 1 is the flow chart based on panoramic video transmission method preferred embodiment H.264 provided by the invention.
Fig. 2 is provided by the invention based on the pretreated method flow diagram of burst in panoramic video transmission method H.264.
Fig. 3 is the method flow diagram based on sheet group encapsulated delivery in panoramic video transmission method H.264 provided by the invention.
Fig. 4 is the structured flowchart based on panoramic video transmission system preferred embodiment H.264 provided by the invention.
Embodiment
The invention provides a kind of based on panoramic video transmission method H.264 and system, for making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the flow chart based on panoramic video transmission method preferred embodiment H.264 provided by the invention, as shown in the figure, said method comprising the steps of:
Step S100, burst preliminary treatment is carried out to panoramic video, obtain corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video;
Step S200, according to the described multiple H.264 burst video of video playback window size, the window's position and described burst Map Profile correspondence retrieval, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client.
Below in conjunction with specific embodiment, above-mentioned steps is described in detail.
Panoramic picture has due to it the large picture size that compares and needs in the transmission to take large bandwidth.A kind of method reducing transmission bandwidth is the image only transmitting current viewing window size.Adopt in this way, server is transferred to user side after must decompressing to the compression panoramic picture stored and intercepting the contracting of viewing video in window weight again, proposes very large data processing load like this to server.Adopt of the present invention based on panoramic video transmission method H.264, server does not need to carry out decompress(ion) to image rapid extraction can watch video in window, effectively reduces the data processing load of server, improves interaction response ability.H.264 video image prediction take macro block as least unit, and some macro block combinations are in blocks, and sheet is the border of macroblock prediction, and the prediction of macro block can not with reference to the macro block of other sheet.Video server is to aphorama frequency division two phase process accordingly: burst preliminary treatment and sheet group encapsulated delivery.Step S100 is burst pretreatment stage, and step S200 is the sheet group encapsulated delivery stage.
In the step s 100, burst preliminary treatment is carried out to panoramic video, obtain corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.About H.264, also be MPEG-4 Part X simultaneously, it is the high compression digital video coding-coding device standard that the joint video team (JVT, JointVideoTeam) constituted jointly by ITU-T Video Coding Experts group (VCEG) and ISO/IEC dynamic image expert group (MPEG) proposes.Specifically, panoramic video is divided into multiple by predetermined sizing grid and the corresponding H.264 video being compressed into single group respectively by step S100; Correspondence obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
Refer to Fig. 2, as shown in Figure 2, when practical application, at burst pretreatment stage, that panoramic video is divided into by certain sizing grid (W*H) the H.264 video that N*M sheet is compressed into single group respectively, N*M H.264 video and a burst Map Profile will be generated thus on video server, Map Profile is for identifying the grid arrangement of burst video, PPS(PictureParameterSet, picture parameter set), SPS(sequenceparametersets, sequence parameter set) etc. necessary video information.Wherein, W, H, N, M are positive integer.
Preferably, described burst Map Profile comprises: for identifying the grid arrangement of burst video, picture parameter set and sequence parameter set video information.
Please continue to refer to Fig. 2, when practical application, panoramic video is first decoded by server, then burst compression obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
In step s 200, according to the described multiple H.264 burst video of video playback window size, the window's position and described burst Map Profile correspondence retrieval, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client.Specifically, step S200 is the sheet group encapsulated delivery stage.First, according to the video window size of client-requested and the window's position and described burst Map Profile, multiple H.264 burst video described in dynamic retrieval; Then, parsing burst video network level of abstraction grammer is carried out to the H.264 burst video that correspondence retrieves, the H.264 burst video retrieved, to sheet group, is combined in corresponding single H.264 video flowing according to described burst Map Profile, and sends to client by permutatation macro block.
Refer to Fig. 3, Fig. 3 is the method flow diagram based on sheet group encapsulated delivery in panoramic video transmission method H.264 provided by the invention, and as shown in Figure 3, when practical application, the encapsulation of sheet group is the Dynamic Execution when on-line normalization.Video window size, the window's position and described burst Map Profile that server is asked according to user, the H.264 burst video file that dynamic retrieval stores, and the burst video retrieved is combined in single H.264 video flowing.In this anabolic process, server parses burst video NAL(networkabstractionlayer, network abstract layer) grammer, permutatation macro block does not need decoding and the weight contracting of doing image to sheet group.
As shown in Figure 3, when practical application, first according to the video playback window size of client-requested and the window's position and described burst Map Profile, retrieve multiple burst video file, then obtain corresponding multiple burst video files, more corresponding parsing NAL(network abstract layer) macroblock syntax, permutatation image macro again, then according to encapsulation PPS, SPS and RBSP(RawByteSequencePayload, raw byte sequence payload) data, obtain corresponding H.264 video flowing.Described client refers to the product such as mobile terminal or intelligent terminal of user.Like this, the present invention carries out burst compression to panoramic video in advance, can topography's video of rapid extraction panoramic picture compressed video without the need to decompress(ion) aphorama pollakicoprosis, effectively reduces video server data processing load, improve interaction response ability, bring and facilitate greatly.
Based on above-mentioned panoramic video transmission method H.264, present invention also offers a kind of based on panoramic video transmission system H.264, as shown in Figure 4, described system comprises:
Burst pretreatment module 10, for carrying out burst preliminary treatment to panoramic video, obtains corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video; Specifically as described in step S100;
Sheet group encapsulated delivery module 20, for retrieving described multiple H.264 burst video according to video playback window size, the window's position and described burst Map Profile correspondence, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client; Specifically as described in step S200.
Further, described burst pretreatment module 10 comprises:
Burst pretreatment unit, for being divided into multiple by panoramic video by predetermined sizing grid and the corresponding H.264 video being compressed into single group respectively; Correspondence obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
Further, described burst Map Profile comprises: for identifying the grid arrangement of burst video, picture parameter set and sequence parameter set video information.
Further, described group encapsulated delivery module 20 comprises:
Retrieval unit, for the window size of the video playback according to client-requested, the window's position and described burst Map Profile, multiple H.264 burst video described in dynamic retrieval;
Encapsulated delivery unit, carries out parsing network abstract layer macroblock syntax for the H.264 burst video retrieved correspondence, and the H.264 burst video retrieved, to sheet group, is combined in corresponding single H264 video flowing, and sends to client by permutatation macro block.
In sum, provided by the invention a kind of based on panoramic video transmission method H.264 and system, by carrying out burst preliminary treatment to panoramic video, obtain corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video; According to the described multiple H.264 burst video of video playback window size, the window's position and described burst Map Profile correspondence retrieval, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client; Utilize the burst characteristic of H.264 encoding, can topography's video of rapid extraction panoramic picture compressed video without the need to decompress(ion) aphorama pollakicoprosis, reduce the data processing load of server, improve interaction response ability, bring and facilitate greatly.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (8)
1., based on a panoramic video transmission method H.264, it is characterized in that, comprising:
A, burst preliminary treatment is carried out to panoramic video, obtain corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video;
B, according to the described multiple H.264 burst video of video playback window size, the window's position and described burst Map Profile correspondence retrieval, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client.
2. according to claim 1ly it is characterized in that based on panoramic video transmission method H.264, described steps A specifically comprises:
A1, panoramic video is divided into multiple by predetermined sizing grid and the corresponding H.264 video being compressed into single group respectively; Correspondence obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
3. according to claim 2ly it is characterized in that based on panoramic video transmission method H.264, described burst Map Profile comprises: for identifying the grid arrangement of burst video, picture parameter set and sequence parameter set video information.
4. according to claim 1ly it is characterized in that based on panoramic video transmission method H.264, described step B specifically comprises:
B1, window size, the window's position and described burst Map Profile according to the video playback of client-requested, multiple H.264 burst video described in dynamic retrieval;
B2, carry out parsing network abstract layer macroblock syntax to the H.264 burst video that correspondence retrieves, the H.264 burst video retrieved, to sheet group, is combined in corresponding single H264 video flowing, and sends to client by permutatation macro block.
5., based on a panoramic video transmission system H.264, it is characterized in that, comprising:
Burst pretreatment module, for carrying out burst preliminary treatment to panoramic video, obtains corresponding multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video;
Sheet group encapsulated delivery module, for retrieving described multiple H.264 burst video according to video playback window size, the window's position and described burst Map Profile correspondence, the H.264 burst video retrieved is combined as corresponding single H.264 video flowing, and sends to client.
6. according to claim 5ly it is characterized in that based on panoramic video transmission system H.264, described burst pretreatment module comprises:
Burst pretreatment unit, for being divided into multiple by panoramic video by predetermined sizing grid and the corresponding H.264 video being compressed into single group respectively; Correspondence obtains multiple H.264 burst video and the burst Map Profile for the video information that identifies burst video.
7. according to claim 6ly it is characterized in that based on panoramic video transmission system H.264, described burst Map Profile comprises: for identifying the grid arrangement of burst video, picture parameter set and sequence parameter set video information.
8. according to claim 5ly it is characterized in that based on panoramic video transmission system H.264, described group encapsulated delivery module comprises:
Retrieval unit, for the window size of the video playback according to client-requested, the window's position and described burst Map Profile, multiple H.264 burst video described in dynamic retrieval;
Encapsulated delivery unit, carries out parsing network abstract layer macroblock syntax for the H.264 burst video retrieved correspondence, and the H.264 burst video retrieved, to sheet group, is combined in corresponding single H264 video flowing, and sends to client by permutatation macro block.
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