Hi All,
I currently experiment to compare the timestamp of RTP packet and video frame from RTSP server.
I am using OPENCV to grab the frame, and use VideoCapture API get(CAP_PROP_POS_MSEC) to retrieve the stamp time. Below is the output
frame 1, 50
frame 2, 100
...
This timestamp is calculated based on FPS (20 in this case);
However, when I extract the timestamp from the RTP packet, this is what i get:
RTP packet 1 [timestamp: 42956]
RTP packet 2 [timestamp: 50156]
RTP packet 3 [timestamp: 53756]
The question is How do we know the RTP timestamp for each OPENCV frame. Is there any API to help achieve it?
Please advise.