A method, system and device for synchronizing external data and video images
An external data and video technology, applied in the field of video processing, can solve problems such as second-level error, system reference clock error, and poor synchronization between external data and video images.
Active Publication Date: 2021-10-22
BEIJING QIYI CENTURY SCI & TECH CO LTD
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Problems solved by technology
Since the service node and the third-party AI recognition service may obtain video streams at different time points, and the system reference clocks of the two may also have errors, this will lead to the problem of low accuracy of the time point corresponding to the determined external data, which can reach the second level Error, the synchronization between external data and video screen is poor
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[0170] As an implementation manner of the embodiment of the present invention, there may be multiple target addresses;
[0171] The above-mentioned target server node may be specifically configured to determine the first time stamp identified by the point information and the transcoding process corresponding to each target address when the point information of the identified external data is obtained. The second timestamp of the current video frame; respectively encapsulating the difference corresponding to each of the target addresses corresponding to the current video frame into the video stream to be processed to obtain the corresponding value of each of the target addresses target video stream.
[0172] As an implementation manner of the embodiment of the present invention, the above system may also include a playback terminal;
[0173] The playback end can be used to obtain the target video stream; decode the target video stream to obtain video frames and difference info...
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Embodiments of the present invention provide a method, system and device for synchronizing external data and video images. The method is applied to a service node, including: transcoding the video stream to be processed, and performing video stream processing according to a preset identification method Identify; when the point information of the identified external data is obtained, determine the first time stamp identified by the point information and the second time stamp, first time stamp and second time of the current video frame of the transcoding process All stamps start from the timestamp of the video stream to be processed; calculate the difference information between the first timestamp and the second timestamp; encapsulate the difference information corresponding to the current video frame into the video stream to be processed, and obtain the target video stream; sending the target video stream to the target address, so that the player corresponding to the target address synchronously plays the target video stream and the corresponding external data based on the difference information. Can achieve precise synchronization of external data and video images.
Description
technical field [0001] The invention relates to the technical field of video processing, in particular to a method, system and device for synchronizing external data and video images. Background technique [0002] In media business scenarios such as live streaming and video-on-demand, it is often necessary to associate a certain picture in a video with specific content, for example, information stream advertisements, highlights of live sports broadcasts, key plot reminders of TV dramas and movies, etc., among which the specific content called external data. In this type of business scenario, the current practice is to customize the external data according to the video content in advance, so that the player can display the external data when the video reaches the corresponding time progress during the video playback process. Due to its real-time, unpredictability and other characteristics, live broadcast services cannot determine the triggering timing of external data in adv...
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IPC IPC(8): H04N21/218H04N21/234H04N21/2343H04N21/845H04N21/8547
CPCH04N21/2181H04N21/23418H04N21/234309H04N21/8455H04N21/8547
Inventor 孙鹏飞张涛
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD