CN102340681A - 3D (three-dimensional) stereo video single-file double-video stream recording method - Google Patents
3D (three-dimensional) stereo video single-file double-video stream recording method Download PDFInfo
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Abstract
The invention discloses a 3D (three-dimensional) stereo video single-file double-video stream recording method. In file recording, the method comprises the steps of: defining the ID of a left video stream as N and the ID of a right video stream as N+1, and synthesizing the two video streams in one video file; in synthesis of 3D video file, the method comprises the steps of: taking the start timestamp of the video file as a uniform reference, and adding a timestamp mark to each video frame of the two video streams such that the video frames corresponding to the left and right video streams have the same timestamp. In the invention, the IDs of the left and right video streams are defined by an odd number and an even number so that the left and right video streams can be automatically identified when played; and moreover, the timestamp mark is added to each image frame by taking the start timestamp of the file as reference so as to achieve accurate time synchronization of the left and right images, obtain strong third dimension of the images and prevent ghost and the like. According to the invention, the file format adopts standard formats such as ASF, MKV, AVI and the like for writing; and when in playing, modification of a player is not required so as to facilitate use.
Description
Technical field
The present invention discloses a kind of 3D video flowing method for recording, particularly a kind of 3D three-dimensional video-frequency monofile two video streaming method for recording.
Background technology
Along with the development of computer technology, the broadcast mode of video file has also had significant progress, develops into the 2D video by individual picture, has developed into the 3D video again by the 2D video.The 3D video is strong with its third dimension and visual impact, and receives increasing people's concern.The three-dimensional file format of existing 3D has multiple, can be divided into the single channel video flowing substantially, inner with about separate; Separate up and down, about staggered, staggered up and down mode composite coding output; Or single video stream inside comprises the various visual angles stream encryption; For example H.264 multiview code extension standards, or the file of two separation, the mode of each self-contained one road video stream data.More than several kinds of modes, these modes all have the change requirement to existing decoding software or encoding software, perhaps on synchronously, realize having any problem influencing stereoeffect.
Summary of the invention
Play to the above-mentioned unavailable 2D player of mentioning of 3D video of the prior art; Left and right sides video is asynchronous; The shortcoming of stereoeffect difference, the present invention provides a kind of new 3D three-dimensional video-frequency monofile two video streaming method for recording, and it is that benchmark is stamped the timestamp mark on each frame image frame with the file initial time stamp; Precisely synchronous to guarantee the 3D video flowing, stereoeffect is good.
The technical scheme that the present invention solves its technical problem employing is: a kind of 3D three-dimensional video-frequency monofile two video streaming method for recording; This method is when document recording; The ID of left road video flowing is defined as N, and the ID of right wing video flowing is N+1, and two-path video stream is synthesized in a video file; When synthetic 3D video file; Initial time stamp with the video file after synthetic is unified benchmark, on each frame frame of video of two-path video stream, adds the timestamp mark, and left road video flowing stabs identical with the corresponding video frame time of right wing video flowing.
The technical scheme that the present invention solves its technical problem employing further comprises:
Described left road video flowing and right wing video flowing compressed encoding respectively deposit in later in the same video file.
Depositing the unified file that uses behind the file after the compression of described two-path video stream in stabs fiducial time.
The timestamp of the coded frame that described two-path video stream is gathered at one time is identical.
In the described method; Adopt two encoding boards to carry out the collection of left road video flowing and right wing video flowing respectively; Be useful on the lead of incoming sync pulse signal between two encoding boards; Whenever receive a pulse signal, the time index sequence number adds 1, two encoding board and stabs computing time according to time series call number and frame per second.
The invention has the beneficial effects as follows: the ID that adopts odd and even number definition left and right sides video flowing among the present invention; It can be discerned when playing automatically; The present invention is that benchmark is stamped the timestamp mark on a frame image frame with the initial time stamp of file; With reach on the image time of the left and right sides precisely synchronously, make the picture third dimension strong, ghost image etc. can not appear.The final file format of the present invention adopts reference formats such as ASF, MP4, MKV, AVI to write, and during broadcast, need player not made amendment, and is convenient for users to use.
To combine accompanying drawing and embodiment that the present invention is further specified below.
Description of drawings
Fig. 1 is a sequential flowchart of the present invention.
Fig. 2 is the two-way ASF file format sketch map among the present invention.
Embodiment
Present embodiment is the preferred embodiment for the present invention, and other all its principles are identical with present embodiment or approximate with basic structure, all within protection range of the present invention.
The present invention mainly is that please referring to accompanying drawing 1, the present invention comprises the steps: when realizing with two-way or the synthetic 3D video flowing of multichannel 2D video flowing
(1), video flowing collection: among the present invention; Video acquisition module is taken from different visual angles Same Scene; Two different pictures that eyes are seen about the subtense angle anthropomorphic dummy wherein between two visual angles; Promptly simulate on the direction of two eyes of people and at one time Same Scene is observed shooting, take the back and form left and right sides two-path video data.When video flowing is gathered; The ID of left road video flowing is defined as N, and then the ID of right wing video flowing is N+1, and the ID of promptly left road video flowing and right wing video flowing defines with odd and even number respectively; When left road video flowing is odd number; The right wing video flowing is an even number, and when left road video flowing was even number, the right wing video flowing was an odd number.When playing, it still is the right wing video flowing that player can be identified as left road video flowing automatically according to the ID sign like this, and not needing during broadcast manually to select left picture still is right picture.Because the left side of 3D video stream file; The right wing audio video synchronization requires very high; So be when gathering two-path video stream, just to begin joining day stamp sign in video stream file; Timestamp is that the same time coordinate of whole file sharing is, no matter be which video flowing, the description of timestamp all is based on the deviant of same time coordinate 0 beginning of file.When gathering two-path video stream, just begin joining day stamp mark, the timestamp mark is a benchmark with initial timestamp.In the present embodiment; Left and right sides two-path video is through two block encoding plate collections, links together through lead between two block encoding plates, and video acquisition device passes through lead to two block encoding plate transmitting synchronous pulse signals; Two block encoding plates add 1 operation to the synchronization pulse of input; According to the synchronization pulse of video acquisition device, the action that the acquisition module on two encoding boards can be gathered video data simultaneously can be according to the pulse frequency of synchronization pulse and the frame per second of video flowing; Accurately calculate timestamp=1000/fps*index (time series call number) millisecond, on frame of video, add timestamp then.
(2), encoder carries out compressed encoding to the video flowing that collects according to form H.264; In the present embodiment; When encoder carries out compressed encoding to video flowing; Equally also can on the data flow after the compression, enclose timestamp, the timestamp that the timestamp of enclosing during compressed encoding and same frame data adopt when video acquisition is identical.
(3), the file Multiplexing module encapsulates it according to the ID of the data flow of input; Data after will encapsulating then write file, and the file Multiplexing module can number be judged according to the video frame time sequence index when writing data; For the left and right circuit-switched data piece that the identical sequence call number is arranged; When writing, it is added identical timestamp mark, the timestamp that the timestamp mark here and same frame data adopt when video acquisition is identical.So just can guarantee just to make the timestamp precise synchronization of two-way or multi-path video stream from gathering beginning.Can effectively improve because the ghost image that nonsynchronous frame mixed display causes lacks variety of issues such as third dimension.In the present embodiment, when the file Multiplexing module write file, video file write according to standards such as ASF, MP4, MKV or AVI fully, during broadcast, can adopt existing player to broadcast with the form of 2D.
Among the present invention, the computational methods of timestamp mark are according to the coding frame per second of setting (fps), whenever write a frame 1000 * 1/fps millisecond that adds up, and do first-order error accumulative total and revise (this such as 30fps, every frame is the 33.3333... millisecond) each second.
Please referring to accompanying drawing 2; The file format of the two-way ASF file of recording for a kind of the present invention of employing in the accompanying drawing 2, file comprise file header, data block and end-of-file, and file header, data block and end-of-file comprise two parts respectively; File header comprises that flow object is first, flow object head two; Correspond respectively to two video stream file that merging is recorded, data block comprises video stream data one and video stream data two, and end-of-file comprises video stream index one, video stream index two.
The 3D video that the present invention synthesizes if player is supported the 3D video playback, then can directly be play when playing, if player is not supported the 3D video playback, then can adopt the 2D form to carry out video playback.Adopt the ID of odd and even number definition left and right sides video flowing among the present invention; It can be discerned when playing automatically; The present invention is that benchmark is stamped the timestamp mark on a frame image frame with the initial time stamp of file; With reach on the image time of the left and right sides precisely synchronously, make the picture third dimension strong, ghost image etc. can not appear.The final file format of the present invention adopts reference formats such as ASF, MP4, MKV, AVI to write, and during broadcast, need player not made amendment, and is convenient for users to use.
Claims (5)
1. 3D three-dimensional video-frequency monofile two video streaming method for recording is characterized in that: described method is for when document recording, and the ID of left road video flowing is defined as N; The ID of right wing video flowing is N+1; Two-path video stream is synthesized in a video file, when synthetic 3D video file, is to unify benchmark with the initial time stamp of video file; On each frame frame of video of two-path video stream, add the timestamp mark, left road video flowing stabs identical with the corresponding video frame time of right wing video flowing.
2. 3D three-dimensional video-frequency monofile two video streaming method for recording according to claim 1, it is characterized in that: described left road video flowing and right wing video flowing compressed encoding respectively deposit in later in the same video file.
3. 3D three-dimensional video-frequency monofile two video streaming method for recording according to claim 2 is characterized in that: deposit the unified file that uses behind the file after the compression of described two-path video stream in and stab fiducial time.
4. 3D three-dimensional video-frequency monofile two video streaming method for recording according to claim 3 is characterized in that: the timestamp of the coded frame that described two-path video stream is gathered at one time is identical.
5. according to claim 1 or 2 or 3 or 4 described 3D three-dimensional video-frequency monofile two video streaming method for recording; It is characterized in that: in the described method; Adopt two encoding boards to carry out the collection of left road video flowing and right wing video flowing respectively, be useful on the lead of incoming sync pulse signal between two encoding boards, whenever receive a pulse signal; The time index sequence number adds 1, two encoding board and stabs computing time according to time series call number and frame per second.
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Cited By (11)
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| CN102780896A (en) * | 2012-05-31 | 2012-11-14 | 新奥特（北京）视频技术有限公司 | Method for supporting three-dimensional (3D) technology through stream media materials |
| CN103517062A (en) * | 2012-06-15 | 2014-01-15 | 晨星软件研发(深圳)有限公司 | Image synchronization method and device thereof |
| CN104219527A (en) * | 2014-09-19 | 2014-12-17 | 广州盈可视电子科技有限公司 | Coding method and coding system for embedded device-oriented 4K ultra-high-definition video |
| CN104935914A (en) * | 2014-03-19 | 2015-09-23 | 宏达国际电子股份有限公司 | Electronic device and image photographing method thereof |
| CN105430537A (en) * | 2015-11-27 | 2016-03-23 | 刘军 | Method and server for synthesis of multiple paths of data, and music teaching system |
| CN103581599B (en) * | 2012-07-31 | 2017-04-05 | 安凯(广州)微电子技术有限公司 | Improved method, device and watch-dog that two-way is recorded a video |
| CN107295326A (en) * | 2017-06-06 | 2017-10-24 | 南京巨鲨显示科技有限公司 | A kind of 3D three-dimensional video-frequencies method for recording |
| CN107690053A (en) * | 2016-08-05 | 2018-02-13 | 北京国基科技股份有限公司 | A kind of method and system of the time shaft for determining video flowing |
| CN108345006A (en) * | 2012-09-10 | 2018-07-31 | 广稹阿马斯公司 | Capture the unit and system of moving scene |
| CN109547768A (en) * | 2018-11-05 | 2019-03-29 | 万维科研有限公司 | The method for generating the accurate depth map of 3 D video |
| CN112616089A (en) * | 2020-11-27 | 2021-04-06 | 深圳点猫科技有限公司 | Live broadcast splicing and stream pushing method, system and medium for network lessons |
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| CN102780896A (en) * | 2012-05-31 | 2012-11-14 | 新奥特（北京）视频技术有限公司 | Method for supporting three-dimensional (3D) technology through stream media materials |
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| CN103517062A (en) * | 2012-06-15 | 2014-01-15 | 晨星软件研发(深圳)有限公司 | Image synchronization method and device thereof |
| CN103581599B (en) * | 2012-07-31 | 2017-04-05 | 安凯(广州)微电子技术有限公司 | Improved method, device and watch-dog that two-way is recorded a video |
| CN108345006A (en) * | 2012-09-10 | 2018-07-31 | 广稹阿马斯公司 | Capture the unit and system of moving scene |
| CN104935914B (en) * | 2014-03-19 | 2017-03-22 | 宏达国际电子股份有限公司 | Electronic device and image photographing method thereof |
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| CN104219527A (en) * | 2014-09-19 | 2014-12-17 | 广州盈可视电子科技有限公司 | Coding method and coding system for embedded device-oriented 4K ultra-high-definition video |
| CN105430537A (en) * | 2015-11-27 | 2016-03-23 | 刘军 | Method and server for synthesis of multiple paths of data, and music teaching system |
| CN105430537B (en) * | 2015-11-27 | 2018-04-17 | 刘军 | Synthetic method, server and music lesson system are carried out to multichannel data |
| CN107690053A (en) * | 2016-08-05 | 2018-02-13 | 北京国基科技股份有限公司 | A kind of method and system of the time shaft for determining video flowing |
| CN107690053B (en) * | 2016-08-05 | 2019-11-08 | 北京国基科技股份有限公司 | A kind of method and system of the time shaft of determining video flowing |
| CN107295326A (en) * | 2017-06-06 | 2017-10-24 | 南京巨鲨显示科技有限公司 | A kind of 3D three-dimensional video-frequencies method for recording |
| CN109547768A (en) * | 2018-11-05 | 2019-03-29 | 万维科研有限公司 | The method for generating the accurate depth map of 3 D video |
| CN112616089A (en) * | 2020-11-27 | 2021-04-06 | 深圳点猫科技有限公司 | Live broadcast splicing and stream pushing method, system and medium for network lessons |
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