A method and system for synchronous multicast and video forwarding

Abstract

The invention discloses a synchronous multicast and video forwarding method, comprising: publishing data packets containing video streams and audio streams to a receiving end; receiving the data packets, obtaining video frames and corresponding audio streams, and recording each The receiving time of the video frame and the set playing time; the setting delay time after the receiving time is set as the playing time of the video frame, and the video frame and corresponding audio stream are played at the playing time, and each video is monitored in real time Whether the actual playback time of the frame is consistent with the set playback time, if not, the preset fine-tuning strategy is used to adjust the playback duration of the current video frame and the subsequent M video frames. The invention enables multiple players under the same network to play video programs synchronously at the same time, reduces playback delay and synchronization error, and achieves the effect of synchronous lip sound playback; for asynchronous video playback caused by abnormal analysis and other factors, a fine-tuning strategy is used to adjust, Make it re-implement synchronous playback.

Description

technical field [0001] The present invention relates to the technical field of video multicast, in particular to a synchronous multicast and video forwarding method and system. Background technique [0002] The current popular practice of video synchronous playback, from the hardware point of view, you can use a video splitter to connect the same video source playback device to multiple display devices through the splitter, which is mostly used for synchronous playback at a relatively short distance; from the software point of view , the common practice is that the video source device sends the video through network multicast, and then uses the multicast stream receiving device to receive the multicast data and play it in combination. It is suitable for synchronous playback of devices in different spaces under the same network, but this kind of usage Due to the difference in the video analysis performance of each video source device, it is easy to cause problems such as netw...

AI Technical Summary

Problems solved by technology

[0002] The current popular practice of video synchronous playback, from the hardware point of view, you can use a video splitter to connect the same video source playback device to multiple display devices through the splitter, which is mostly used for synchronous playback at a relatively short distance; from the software point of view , the common practice is that the video source device sends the video through network multicast, and then uses the multicast stream receiving device to receive the multicast data and play it in combination. It is suitable for synchronous playback of devices in different spaces under the same network, but this kind of usage Due to the difference in the video analysis performance of each video source device, it is easy to cause problems such as network delay and large synchronization error (may exceed 3 seconds)

Images