CN111556351B - RTP file playing system - Google Patents
RTP file playing system Download PDFInfo
- Publication number
- CN111556351B CN111556351B CN202010411609.3A CN202010411609A CN111556351B CN 111556351 B CN111556351 B CN 111556351B CN 202010411609 A CN202010411609 A CN 202010411609A CN 111556351 B CN111556351 B CN 111556351B
- Authority
- CN
- China
- Prior art keywords
- audio
- video
- video data
- playing
- data source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
-
- 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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention relates to an RTP file playing system which is used for transcoding and playing a live recorded audio and video data source, comprises a display system and is characterized in that: an independent audio and video track is arranged for each audio and video data source recorded on site, and an independent audio and video analysis module capable of analyzing an RTP file is distributed for each independent audio and video track; meanwhile, an independent key frame track is distributed for each audio and video data source, and the key frame track is used for displaying a time area of a video frame and a time area of the key frame according to recording time; the display system comprises an audio and video playing area and a key frame track display area. Compared with the prior art, the invention has the advantages that: the audio and video RTP file can be transcoded and watched at the same time, so that the problem of high online recording cost is solved, and the demand of offline transcoding and real-time viewing can be met.
Description
Technical Field
The invention relates to an RTP file playing system.
Background
With the development of communication technology, audio and video conferences have been widely applied. In some specific scenarios, it is often necessary to record the conference process for future viewing.
Audio-video transcoding is a technique for transcoding and recording an audio-video data source of a conference into a playable file.
The real-time online recording refers to a technology for synchronously transcoding the audio and video data source when a conference is in progress, and has the advantages that recorded files can be watched after the conference is finished, but the server cost is high.
The off-line recording service is that only audio and video communication RTP data is stored when a conference is in progress, and then the data is transcoded into a playable file after the conference is ended or when the conference is needed, so that the pressure of a server is reduced, and the cost is reduced. However, the recorded file can be played only after transcoding is completed, and the real-time viewing requirements cannot be met.
Disclosure of Invention
The invention provides an RTP file playing system which can analyze RTP data recorded in an audio and video conference, decode the RTP data in real time and output the decoded RTP data to a screen for watching.
The technical scheme adopted by the invention for solving the technical problems is as follows: an RTP file playing system is used for transcoding and playing a live recorded audio and video data source, comprises a display system and is characterized in that: setting an independent track for each audio and video data source recorded on site, and distributing an independent audio and video analysis module capable of analyzing an RTP file for each independent track; meanwhile, an independent key frame track is distributed for each audio and video data source, and the key frame track is used for displaying a time area of a video frame and a time area of the key frame according to recording time; the display system comprises an audio and video playing area and a key frame track display area, wherein the audio and video playing area is used for playing an audio and video file which is analyzed by an audio and video analysis module and is analyzed in real time and transcoded, and the key frame track display area is used for displaying a key frame track in each audio and video data source.
If a user in a recording field temporarily leaves the field midway, the audio and video data source for recording possibly comprises a plurality of RTP files, so that each audio and video data source for recording in the field possibly comprises one or more RTP files.
In a preferred embodiment, the time regions of the keyframe track where there is video are indicated by green bars and the time regions where the keyframes are located are indicated by white lines.
As an improvement, the audio and video playing area distributes an independent video display window for each audio and video data source.
And then, the audio and video playing area automatically adjusts the size of each video display window according to the number of the audio and video data sources, the size of each video display window is the same, and the centered layout is adopted as a principle, so that at most 32 video display windows are displayed in one page, and page turning is supported.
And improving the system, and displaying the id and the real-time resolution of the audio and video data source below each video display window.
The RTP file playing system provided by the invention can realize the skip playing of a certain audio and video data source in the following way: and according to the jumping time, combining the key frame track, forwards searching the time point of the nearest key frame as the playing start time of the audio and video data source, cutting the audio and video data source from the point, and playing the cut audio and video data source as a new playing source again.
And improving the method, if the audio and video data source has no video data at the jumping time point, taking the first key frame of the next section of video as the playing starting time.
And then, if a plurality of audio and video data sources exist and the time of the key frame in each different audio and video data source is asynchronous, the skip play of the audio and video data sources is solved by the following method:
firstly, for each audio and video data source, searching a key frame time point closest to a set jumping point as the time for starting video playing, and cutting the audio and video data source from the point;
secondly, finding the minimum value of the key frame time points nearest to the set jumping point in all the audio and video data sources, and cutting all the audio and video data sources from the point;
and finally, setting time difference for analyzing the RTP file to start, thereby ensuring the time synchronization of each audio and video data source.
And improving the method, wherein the processes of transcoding and playing the audio and video data source recorded on site are as follows:
1) pre-loading before playing
1-1) decompressing RTP file data packets of each audio and video data source;
1-2) analyzing the configuration file of each audio and video data source to obtain an RTP playing file directory of each audio and video data source, and distributing an independent video display window for each audio and video data source according to the size of an audio and video playing area;
1-3), analyzing the RTP data file of each audio and video data source, and aiming at each audio and video data source, obtaining four types of data: a video RTP file table, a video key frame time table, time points of the beginning and the end of each video segment, and time points of the resolution and the resolution change;
2) and playing
2-1), start playing
2-1-1) copying each audio and video data source to a playing folder;
2-1-2) drawing a key frame track for each audio and video data source;
2-1-3), analyzing the RTP file in each audio and video data source to obtain the audio and video file which is analyzed and transcoded in real time, and playing and displaying the audio and video file in a corresponding video display window;
2-2), pause and resume: setting a flag bit, and judging whether to read the audio and video file which is analyzed and transcoded in real time or not according to the flag bit;
2-3), jump
2-3-1), ending the current playing, and deleting all currently played audio and video files;
2-3-2), according to the jumping time, forward searching the nearest key frame time point, and cutting an RTP file in an audio and video data source from the point to ensure audio and video synchronization;
2-3-3), analyzing and coding RTP files in all the cut audio and video data sources to obtain cut audio and video files, and playing and displaying the cut audio and video files in corresponding video display windows;
2-4), video preview
2-4-1) calculating a previewed audio and video data source and a time point according to the position of the mouse;
2-4-2), searching the nearest key frame corresponding to the audio and video data source forward, and cutting 100ms data from the point;
2-4-3), analyzing and decoding the cut data of 100ms, and storing and displaying the first frame picture.
Compared with the prior art, the invention has the advantages that: the audio and video RTP file can be transcoded and watched at the same time, so that the problem of high online recording cost is solved, and the demand of offline transcoding and real-time viewing can be met. In addition, in an improved scheme, the RTP file playing system provided by the invention can support time-shift playback and jump playing, can support a plurality of videos, can realize synchronous playing, pause and preview of different video tracks, can support selection and combination of different media in the later period, and can transcode into the standard MP4 according to requirements, thereby having flexibility.
Drawings
Fig. 1 is a display diagram of a display system according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a multi-track video playing correspondence according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a keyframe track display in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The invention provides an RTP file playing system which is used for transcoding and playing a live recorded audio and video data source and comprises a display system, wherein the RTP file playing system is provided with an independent track for each live recorded audio and video data source and is provided with an independent audio and video analysis module capable of analyzing an RTP file; meanwhile, an independent key frame track is distributed for each audio and video data source, and the key frame track is used for displaying a time area of a video frame and a time area of the key frame according to recording time; the display system comprises an audio and video playing area and a key frame track display area, wherein the audio and video playing area is used for playing an audio and video file which is analyzed by an audio and video analyzing module in real time and is transcoded, the audio and video playing area distributes an independent video display window for each audio and video data source, and the id and the real-time resolution of the audio and video data source are displayed below each video display window; the key frame track display area is used for displaying the key frame track in each audio/video data source, and is shown in fig. 1. The time area of the video in the key frame track is represented by a green bar, the time area of the video is blank, the time area of the key frame is represented by a white line, the thickness of the green bar represents the resolution, and the letter 'r' represents that the participant joins again after leaving the conference, which is shown in fig. 3.
The recording site may include one or more users, and if a user temporarily leaves the recording site halfway, the source of audio/video data for recording may include a plurality of RTP files, as shown in fig. 2. Each live recorded audio-video data source may thus include one or more RTP files. The audio and video playing area automatically adjusts the size of each video display window according to the number of the audio and video data sources, the size of each video display window is the same, a centered layout is adopted as a principle, at most 32 video display windows are displayed in one page, and page turning is supported.
The RTP file playing system provided by the invention is characterized in that: the skipping playing of a certain audio/video data source is realized through the following modes: and according to the jumping time, combining the key frame track, forwards searching the time point of the nearest key frame as the playing start time of the audio and video data source, cutting the audio and video data source from the point, and playing the cut audio and video data source as a new playing source again. And if the audio and video data source does not have video data at the jumping time point, taking the first key frame of the next video as the time for starting playing. If a plurality of audio and video data sources exist and the time of key frames in different audio and video data sources is asynchronous, the skip play of the audio and video data sources is solved by the following method:
firstly, for each audio and video data source, searching a key frame time point closest to a set jumping point as the time for starting video playing, and cutting the audio and video data source from the point;
secondly, finding the minimum value of the key frame time points nearest to the set jumping point in all the audio and video data sources, and cutting all the audio and video data sources from the point;
and finally, setting time difference for analyzing the RTP file to start, thereby ensuring the time synchronization of each audio and video data source.
The RTP file playing system provided by the invention has the following processes of transcoding and playing the audio and video data source recorded on site:
1) pre-loading before playing
1-1) decompressing RTP file data packets of each audio and video data source;
1-2) analyzing the configuration file of each audio and video data source to obtain an RTP playing file directory of each audio and video data source, and distributing an independent video display window for each audio and video data source according to the size of an audio and video playing area;
1-3), analyzing the RTP data file of each audio and video data source, and aiming at each audio and video data source, obtaining four types of data: a video RTP file table, a video key frame time table, time points of the beginning and the end of each video segment, and time points of the resolution and the resolution change;
2) and playing
2-1), start playing
2-1-1) copying each audio and video data source to a playing folder;
2-1-2) drawing a key frame track for each audio and video data source;
2-1-3), analyzing the RTP file in each audio and video data source to obtain the audio and video file which is analyzed and transcoded in real time, and playing and displaying the audio and video file in a corresponding video display window;
2-2), pause and resume: setting a flag bit, and judging whether to read the audio and video file which is analyzed and transcoded in real time or not according to the flag bit;
2-3), jump
2-3-1), ending the current playing, and deleting all currently played audio and video files;
2-3-2), according to the jumping time, forward searching the nearest key frame time point, and cutting an RTP file in an audio and video data source from the point to ensure audio and video synchronization;
2-3-3), analyzing and coding RTP files in all the cut audio and video data sources to obtain cut audio and video files, and playing and displaying the cut audio and video files in corresponding video display windows;
2-4), video preview
2-4-1) calculating a previewed audio and video data source and a time point according to the position of the mouse;
2-4-2), searching the nearest key frame corresponding to the audio and video data source forward, and cutting 100ms data from the point;
2-4-3), analyzing and decoding the cut data of 100ms, and storing and displaying the first frame picture.
Claims (9)
1. An RTP file playing system is used for transcoding and playing a live recorded audio and video data source, comprises a display system and is characterized in that: an independent audio and video track is arranged for each audio and video data source recorded on site, and an independent audio and video analysis module capable of analyzing an RTP file is distributed for each independent audio and video track; meanwhile, an independent key frame track is distributed for each audio and video data source, and the key frame track is used for displaying a time area of a video frame and a time area of the key frame according to recording time; the display system comprises an audio and video playing area and a key frame track display area, wherein the audio and video playing area is used for playing an audio and video file which is analyzed by an audio and video analysis module and is analyzed in real time and transcoded, and the key frame track display area is used for displaying a key frame track in each audio and video data source;
the RTP file playing system realizes the skip playing of a certain audio and video data source in the following way: and according to the jumping time, combining the key frame track, forwards searching the time point of the nearest key frame as the playing start time of the audio and video data source, cutting the audio and video data source from the point, and playing the cut audio and video data source as a new playing source again.
2. The RTP file playing system according to claim 1, wherein: each live recorded audio-video data source includes one or more RTP files.
3. The RTP file playing system according to claim 1, wherein: the time region of the video in the key frame track is represented by a first color bar, and the time region of the key frame is represented by a second color line.
4. The RTP file playing system according to claim 1, wherein: and the audio and video playing area distributes an independent video display window for each audio and video data source.
5. The RTP file playing system according to claim 4, wherein: the audio and video playing area automatically adjusts the size of each video display window according to the number of the audio and video data sources, the size of each video display window is the same, a centered layout is adopted as a principle, at most 32 video display windows are displayed in one page, and page turning is supported.
6. The RTP file playing system according to claim 5, wherein: and displaying the id and the real-time resolution of the audio and video data source below each video display window.
7. The RTP file playing system according to claim 1, wherein: and if the audio and video data source does not have video data at the jumping time point, taking the first key frame of the next video as the time for starting playing.
8. The RTP file playing system according to claim 7, wherein: if a plurality of audio and video data sources exist and the time of key frames in different audio and video data sources is asynchronous, the skip play of the audio and video data sources is solved by the following method:
firstly, for each audio and video data source, searching a key frame time point closest to a set jumping point as the time for starting video playing, and cutting the audio and video data source from the point;
secondly, finding the minimum value of the key frame time points nearest to the set jumping point in all the audio and video data sources, and cutting all the audio and video data sources from the point;
and finally, setting time difference for analyzing the RTP file to start, thereby ensuring the time synchronization of each audio and video data source.
9. The RTP file playing system according to claim 8, wherein: the process of transcoding and playing the audio and video data source recorded on site is as follows:
1) pre-loading before playing
1-1) decompressing RTP file data packets of each audio and video data source;
1-2) analyzing the configuration file of each audio and video data source to obtain an RTP playing file directory of each audio and video data source, and distributing an independent video display window for each audio and video data source according to the size of an audio and video playing area;
1-3), analyzing the RTP data file of each audio and video data source, and aiming at each audio and video data source, obtaining four types of data: a video RTP file table, a video key frame time table, time points of the beginning and the end of each video segment, and time points of the resolution and the resolution change;
2) and playing
2-1), start playing
2-1-1) copying each audio and video data source to a playing folder;
2-1-2) drawing a key frame track for each audio and video data source;
2-1-3), analyzing the RTP file in each audio and video data source to obtain the audio and video file which is analyzed and transcoded in real time, and playing and displaying the audio and video file in a corresponding video display window;
2-2), pause and resume: setting a flag bit, and judging whether to read the audio and video file which is analyzed and transcoded in real time or not according to the flag bit;
2-3), jump
2-3-1), ending the current playing, and deleting all currently played audio and video files;
2-3-2), according to the jumping time, forward searching the nearest key frame time point, and cutting an RTP file in an audio and video data source from the point to ensure audio and video synchronization;
2-3-3), analyzing and coding RTP files in all the cut audio and video data sources to obtain cut audio and video files, and playing and displaying the cut audio and video files in corresponding video display windows;
2-4), video preview
2-4-1) calculating a previewed audio and video data source and a time point according to the position of the mouse;
2-4-2), searching the nearest key frame corresponding to the audio and video data source forward, and cutting 100ms data from the point;
2-4-3), analyzing and decoding the cut data of 100ms, and storing and displaying the first frame picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010411609.3A CN111556351B (en) | 2020-05-15 | 2020-05-15 | RTP file playing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010411609.3A CN111556351B (en) | 2020-05-15 | 2020-05-15 | RTP file playing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111556351A CN111556351A (en) | 2020-08-18 |
| CN111556351B true CN111556351B (en) | 2022-04-15 |
Family
ID=72004767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010411609.3A Active CN111556351B (en) | 2020-05-15 | 2020-05-15 | RTP file playing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111556351B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290787A (en) * | 2007-04-16 | 2008-10-22 | 奥多比公司 | Changing video frequency playback speed ratio |
| CN103325399A (en) * | 2013-05-15 | 2013-09-25 | 北京汉邦高科数字技术股份有限公司 | Method for video file playing and video file back-up |
| CN103686219A (en) * | 2012-09-24 | 2014-03-26 | 华为技术有限公司 | Method, device and system for recording and broadcasting video conference |
| CN103873804A (en) * | 2014-03-31 | 2014-06-18 | 武汉烽火众智数字技术有限责任公司 | Video replay time axis and content synchronous control method for embedded NVR |
| CN105721811A (en) * | 2015-05-15 | 2016-06-29 | 乐视云计算有限公司 | Live video recording method and system |
| CN106409286A (en) * | 2016-09-23 | 2017-02-15 | 努比亚技术有限公司 | Method and device for implementing audio processing |
| CN106998449A (en) * | 2017-04-10 | 2017-08-01 | 青岛海信移动通信技术股份有限公司 | Method, device and the terminal device of seamless video recording are realized in application layer |
| CN108429931A (en) * | 2017-02-14 | 2018-08-21 | 优酷网络技术（北京）有限公司 | A kind of method for broadcasting multimedia file and device |
| CN108833816A (en) * | 2018-06-14 | 2018-11-16 | 成都依能科技股份有限公司 | A kind of method of multi-channel sound audio video synchronization recording and multi-track synchro edit |
| CN109361886A (en) * | 2018-10-24 | 2019-02-19 | 杭州叙简科技股份有限公司 | A kind of conference video recording labeling system based on sound detection |
| CN110719524A (en) * | 2019-10-16 | 2020-01-21 | 腾讯科技（深圳）有限公司 | Video playing method and device, intelligent playing equipment and storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9930270B2 (en) * | 2015-10-15 | 2018-03-27 | Microsoft Technology Licensing, Llc | Methods and apparatuses for controlling video content displayed to a viewer |
| EP3203701B1 (en) * | 2016-02-04 | 2021-04-21 | Unify Patente GmbH & Co. KG | Method of controlling a real-time conference session, a computer program product causing a computer to execute the method, and a communication system for controlling the real-time conference session |
-
2020
- 2020-05-15 CN CN202010411609.3A patent/CN111556351B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290787A (en) * | 2007-04-16 | 2008-10-22 | 奥多比公司 | Changing video frequency playback speed ratio |
| CN103686219A (en) * | 2012-09-24 | 2014-03-26 | 华为技术有限公司 | Method, device and system for recording and broadcasting video conference |
| CN103325399A (en) * | 2013-05-15 | 2013-09-25 | 北京汉邦高科数字技术股份有限公司 | Method for video file playing and video file back-up |
| CN103873804A (en) * | 2014-03-31 | 2014-06-18 | 武汉烽火众智数字技术有限责任公司 | Video replay time axis and content synchronous control method for embedded NVR |
| CN105721811A (en) * | 2015-05-15 | 2016-06-29 | 乐视云计算有限公司 | Live video recording method and system |
| CN106409286A (en) * | 2016-09-23 | 2017-02-15 | 努比亚技术有限公司 | Method and device for implementing audio processing |
| CN108429931A (en) * | 2017-02-14 | 2018-08-21 | 优酷网络技术（北京）有限公司 | A kind of method for broadcasting multimedia file and device |
| CN106998449A (en) * | 2017-04-10 | 2017-08-01 | 青岛海信移动通信技术股份有限公司 | Method, device and the terminal device of seamless video recording are realized in application layer |
| CN108833816A (en) * | 2018-06-14 | 2018-11-16 | 成都依能科技股份有限公司 | A kind of method of multi-channel sound audio video synchronization recording and multi-track synchro edit |
| CN109361886A (en) * | 2018-10-24 | 2019-02-19 | 杭州叙简科技股份有限公司 | A kind of conference video recording labeling system based on sound detection |
| CN110719524A (en) * | 2019-10-16 | 2020-01-21 | 腾讯科技（深圳）有限公司 | Video playing method and device, intelligent playing equipment and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 多路视频同步记录与回放系统;刘蕾等;《计算机系统应用》;20131231;第22卷(第6期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111556351A (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11240538B2 (en) | Methods and systems for network based video clip generation and management | |
| US11830527B2 (en) | Systems and methods for media production and editing | |
| US7434155B2 (en) | Icon bar display for video editing system | |
| JP4270379B2 (en) | Efficient transmission and reproduction of digital information | |
| EP1071092B1 (en) | Electronic film editing system using both film and videotape format | |
| US9401080B2 (en) | Method and apparatus for synchronizing video frames | |
| US9584571B2 (en) | System and method for capturing, editing, searching, and delivering multi-media content with local and global time | |
| US8265450B2 (en) | Capturing and inserting closed captioning data in digital video | |
| US6546190B1 (en) | Synchronization of multiple media streams | |
| US6871003B1 (en) | Edit decision list for identifying the pull down phase of a video signal | |
| US10542058B2 (en) | Methods and systems for network based video clip processing and management | |
| US10178350B2 (en) | Providing shortened recordings of online conferences | |
| US20060070106A1 (en) | Method, apparatus and program for recording and playing back content data, method, apparatus and program for playing back content data, and method, apparatus and program for recording content data | |
| US10129592B2 (en) | Audience measurement and feedback system | |
| JP2002125199A (en) | Frame information description method, frame information generating device and method, video reproducing device and method, and recording medium | |
| CN111556351B (en) | RTP file playing system | |
| US20090060449A1 (en) | Shooting apparatus and shooting method, information processing apparatus and information processing method, and program | |
| US10497398B2 (en) | Choreographic editing of multimedia and other streams | |
| KR20140134126A (en) | Content creation method and apparatus | |
| GB2483250A (en) | Producing edit decision list by comparing edited video with source video | |
| Edge | Stream and File Formats–Where are We Now? | |
| JP2005217875A (en) | Method of managing chapter information | |
| JP2011223152A (en) | Tapeless system | |
| JP2015173316A (en) | transcoding device and transcoding method | |
| JP2003224808A (en) | Encoder, edit apparatus, and program transmission apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |