CN101197993A - Video and audio synchronizing apparatus - Google Patents
Video and audio synchronizing apparatus Download PDFInfo
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- CN101197993A CN101197993A CNA2006101618670A CN200610161867A CN101197993A CN 101197993 A CN101197993 A CN 101197993A CN A2006101618670 A CNA2006101618670 A CN A2006101618670A CN 200610161867 A CN200610161867 A CN 200610161867A CN 101197993 A CN101197993 A CN 101197993A
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Abstract
The invention provides a video audio synchronization device comprising: a recording memory cell which is positioned on a first server and is used for storing a video file and at least one corresponding audio file in different files when video contents are recorded, wherein both the video file and the audio file having complete timestamp information; a play request unit which is positioned on a second server and is used for assigning the correlated information between the video file and at least one audio file when a video play request is transmitted; and a synchronous superposition unit which is also positioned on the first server and is used for choosing related video file and audio file according to the assigned correlated information in the video play request when receiving the video play request, and then carrying out synchronous playing according to the timestamp information in the video file and the audio file. Thus, the video audio synchronization is realized.
Description
Technical field
The present invention relates to next generation network (NGN) field, more specifically, relate to a kind of device that utilizes media server to realize video and audio sync.
Background technology
In present NGN field, media server is as core media resource apparatus in the network, its major function is exactly that medium control signaling by control appliance provides voice service to network, and along with the development of NGN technology, Video service also becomes one of critical function of media server day by day.
Video and audio frequency be the important step that media server provides video capability synchronously.Generally, the Voice ﹠ Video deposit data and is undertaken by timestamp in a media file synchronously.Because Voice ﹠ Video is stored together, change sound accompaniment all needs to record a new media file at every turn.Along with multilingual application is increasingly extensive, this traditional video and audio sync technology show bigger limitation.
Summary of the invention
For can be under the situation of multiple audio scene of a kind of video configuration or a plurality of videos of a kind of audio configuration, realize video and audio sync, the present invention proposes a kind of video and audio sync device, greatly perfect video that media server provides in the next generation network and audio-frequency function.
The invention provides a kind of video and audio sync device, it comprises: the recording and storing unit, be positioned on first server, be used for when the recorded video content, video file is stored in respectively in the different files with corresponding with it at least a audio file, all stores the information of complete timestamp in video file and the audio file; The playing request unit is positioned on the second server, is used for when sending the video playback request related information between designated file and at least a audio file; And synchronous superpositing unit, be positioned on first server, be used for when receiving the video playback request, related information according to appointment in the video playback request, select corresponding video file and audio file, according to the information of the timestamp in video file and the audio file, carry out synchronous playing then.
According to the present invention, first server is a media server; In addition, second server of the present invention is a service server.
According to the present invention, timestamp comprises dual mode: absolute time is stabbed and relative time stabs; Video file of the present invention adopts identical timestamp mode with audio file.
In addition, related information according to the present invention comprises following at least a: the title of video file, the title of audio file, languages or scene information.
Wherein, video leaves in respectively in the different files with file data, comprises the asynchronous scene such as record with literal synchronous recording, audio frequency and literal of audio frequency, is all undertaken synchronously by timestamp.
Timestamp is a kind of mark of identified time, and video and literal should adopt with a kind of timestamp mode and identify on the same group.Absolute time is stabbed and to be meant and to adopt absolute time to come the mark (that is, current system time) of identified time, and being marked at of adopting that absolute time stabs calculated the side-play amount that each time point and time started put when playing; It is to adopt relative time to come the mark (that is, current system time is with respect to the side-play amount of time started) of identified time that relative time stabs, and adopts being marked at of relative time stamp to calculate the side-play amount of each time point with the time started point when recording.The timestamp that side-play amount is identical is exactly a synchronous points, the expression mode and the registration accuracy of timestamp are decided according to the actual requirements, for example, with year, month, day, hour, min, second and millisecond or year, month, day, hour, min, second, millisecond, microsecond and nanosecond represent absolute time, with second, millisecond, microsecond or microsecond represent relative time stamp etc.
Therefore, the present invention has realized following technique effect: the Voice ﹠ Video function of utilizing media server to provide, video and audio frequency assembled scheme flexibly are provided, have realized video and audio sync, and, the present invention is easy to realize, under the very low situation of infusion of financial resources, just can be so that the user overlaps audio frequency for same video configuration more, simultaneously, the greatly perfect video that media server provides in the next generation network, audio-frequency function have improved the adaptability and the storage efficiency of video playback effectively.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to video of the present invention and audio synchronization method;
Fig. 2 is according to embodiments of the invention, utilizes media server to realize the flow chart of video record real-time video and audio sync; And
Fig. 3 is the block diagram according to video of the present invention and audio sync device.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 1 is the flow chart according to video of the present invention and audio synchronization method.Fig. 2 is according to embodiments of the invention, utilizes media server to realize the flow chart of video record real-time video and audio sync.
In the present invention, the next generation network equipment that relates generally to comprises: media server, application server and terminal.
Media server: unification provides the media resource processing capacity in next generation network, accepts the control of application server, and its medium connect by IP bearer network and gateway or IP terminal interaction, have embodied the networking thought that control separates with carrying.
Application server: be the core component of intelligent network, storaging user data and service logic; Trigger operation flow according to service logic, in the Business Processing process, control media server as required media resource is provided, thereby realize various business function.
Terminal: the man-machine interface with the user, interactive modes such as audio frequency, video, literal are provided, be the final destination and the origin of video playback and video record.
In an embodiment of the present invention, media server is used to provide the specific implementation of video capability; Application server is used to provide the video traffic process control; Terminal is used to provide the source of media of video record and the media exhibition of video playback.
With reference to foregoing description, in conjunction with Fig. 2 introduction video of the present invention as shown in Figure 1 and the specific implementation process of audio synchronization method.As shown in Figure 1, the step of video and audio synchronization method comprises:
Step S102, first server are stored in video file respectively in the different files with corresponding with it at least a audio file when the recorded video content, all store the information of complete timestamp in video file and the audio file;
It is corresponding to as shown in Figure 2 step S202: media server records one group of file of video content in advance, comprise main video file and supporting with it several audio files, or main audio file and supporting with it several video files, or the several video files and the audio file that complement one another, these files adopt identical timestamp mode, all deposit complete timestamp information in each file.
Step S104, second server when sending the video playback request, the related information between designated file and a kind of audio file;
It is corresponding to as shown in Figure 2 step S204: service server sends the video playback request to media server, and indication needs the scene information play, comprises video file name and audio file name.
Step S106, first server is when receiving the video playback request, related information according to appointment in the video playback request, select corresponding video file and audio file, then according to the information of the timestamp in video file and the audio file, carry out synchronous playing, it is corresponding to as shown in Figure 2 step S206 and step S208:
S206: media server is chosen corresponding video, audio file according to video, audio-frequency information after receiving the video playback request, and carries out synchronously according to the timestamp information in two files;
S208, the media data after terminal sends synchronously.
So just finished the process of utilizing media server to realize video record real-time video and audio sync.
Fig. 3 is the block diagram according to video of the present invention and audio sync device.
Among the present invention, video as shown in Figure 3 and audio sync device comprise: recording and storing unit 302, be positioned on first server, be used for when the recorded video content, video file is stored in respectively in the different files with corresponding with it at least a audio file, all store the information of complete timestamp in video file and the audio file, wherein, first server is a media server; Playing request unit 304 is positioned on the second server, is used for when sending the video playback request, and the related information between designated file and at least a audio file, wherein, second server is a service server; And synchronous superpositing unit 306, be positioned on first server, be used for when receiving the video playback request, related information according to appointment in the video playback request, select corresponding video file and audio file, according to the information of the timestamp in video file and the audio file, carry out synchronous playing then.
In the present invention, timestamp comprises dual mode: absolute time is stabbed and relative time stabs; Video file adopts identical timestamp mode with audio file.
In addition, related information of the present invention comprises following at least a: the title of video file, the title of audio file, languages or scene information.
As mentioned above, video of the present invention as can be seen and audio synchronization method and installed existing video and Audiotechnica perfect have been realized video and audio sync, simultaneously, under the situation that drops into a small amount of fund, just can be so that the user side just overlaps audio frequency for same video configuration more.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. video and audio sync device is characterized in that, comprising:
The recording and storing unit, be positioned on first server, be used for when the recorded video content, video file is stored in respectively in the different files with corresponding with it at least a audio file, all store the information of complete timestamp in described video file and the described audio file;
The playing request unit is positioned on the second server, is used for specifying the related information between described video file and at least a described audio file when sending the video playback request; And
Synchronous superpositing unit, be positioned on described first server, be used for when receiving described video playback request, described related information according to appointment in the described video playback request, select corresponding described video file and described audio file, according to the information of the described timestamp in described video file and the described audio file, carry out synchronous playing then.
2. video according to claim 1 and audio sync device is characterized in that, described first server is a media server.
3. video according to claim 1 and 2 and audio sync device is characterized in that described second server is a service server.
4. video according to claim 1 and 2 and audio sync device is characterized in that, described timestamp comprises dual mode: absolute time is stabbed and relative time stabs.
5. video according to claim 4 and audio sync device is characterized in that, described video file adopts identical timestamp mode with described audio file.
6. video according to claim 1 and 2 and audio sync device is characterized in that, described related information comprises following at least a: the title of described video file, the title of described audio file, languages or scene information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101618670A CN101197993A (en) | 2006-12-05 | 2006-12-05 | Video and audio synchronizing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101618670A CN101197993A (en) | 2006-12-05 | 2006-12-05 | Video and audio synchronizing apparatus |
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| CN101197993A true CN101197993A (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006101618670A Withdrawn CN101197993A (en) | 2006-12-05 | 2006-12-05 | Video and audio synchronizing apparatus |
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| CN (1) | CN101197993A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012151756A1 (en) * | 2011-05-12 | 2012-11-15 | Intel Corporation | Techniques for synchronization of audio and video |
| WO2017000554A1 (en) * | 2015-06-29 | 2017-01-05 | 高翔 | Audio and video file generation method, apparatus and system |
| CN107135407A (en) * | 2017-03-29 | 2017-09-05 | 华东交通大学 | Synchronous method and system in a kind of piano video teaching |
| CN108496372A (en) * | 2017-06-30 | 2018-09-04 | 深圳市大疆创新科技有限公司 | The video and synchronous method of audio, equipment and unmanned plane |
-
2006
- 2006-12-05 CN CNA2006101618670A patent/CN101197993A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012151756A1 (en) * | 2011-05-12 | 2012-11-15 | Intel Corporation | Techniques for synchronization of audio and video |
| US9179118B2 (en) | 2011-05-12 | 2015-11-03 | Intel Corporation | Techniques for synchronization of audio and video |
| WO2017000554A1 (en) * | 2015-06-29 | 2017-01-05 | 高翔 | Audio and video file generation method, apparatus and system |
| CN107135407A (en) * | 2017-03-29 | 2017-09-05 | 华东交通大学 | Synchronous method and system in a kind of piano video teaching |
| CN107135407B (en) * | 2017-03-29 | 2019-10-18 | 华东交通大学 | Synchronous method and system in a kind of piano video teaching |
| CN108496372A (en) * | 2017-06-30 | 2018-09-04 | 深圳市大疆创新科技有限公司 | The video and synchronous method of audio, equipment and unmanned plane |
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