SEI frame playback data synchronization method, system and device based on video stream and medium

Abstract

The invention provides an SEI frame playback data synchronization method, system and device based on a video stream and a medium, and the method comprises the steps: 1, obtaining a recorded video file, and analyzing all SEI frame data in the video file, determining the current timestamp corresponding to each SEI frame and the relative time when each page of the auxiliary document appears on the video playing timeline; 2, respectively calculating the interval time delta T of the current timestamps corresponding to the two adjacent SEI frames, and determining whether video frame data is lost between the two adjacent SEI frames according to the interval time delta T; if so, entering the step 3, otherwise, not processing the video file and normally playing the video file; and 3, deleting the auxiliary document data of which the auxiliary document data timestamps are in the timestamps of the two adjacent SEI frames, and moving the subsequent auxiliary document data forwards. According to the method, the auxiliary document data can be accurately corrected according to the loss of the video frame data, and the synchronism of the auxiliary document and the video in playback is greatly ensured.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to a video stream-based SEI frame playback data synchronization method, system, device and medium. Background technique [0002] Now when live streaming is pushed through live streaming software, sometimes it is necessary to add other auxiliary functions independent of live streaming, such as ppt data. At this time, when restoring the entire live broadcast process in live playback, it is necessary to play video data and other auxiliary functions. The data. However, during the live broadcast, the unstable network link can easily cause a disconnection, resulting in the loss of some saved video frame data. At this time, if the ppt data is saved normally, there will be a problem that the ppt and video are not synchronized during playback. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention proposes a video stream-base...

AI Technical Summary

Problems solved by technology

During the live broadcast, the unstable network link is likely to cause a disconnection, resulting in the loss of some saved video frame data. At this time, if the ppt data is saved normally, the ppt and video will not be synchronized during playback.

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