RTP timestamp for OPENCV

asked 2018-08-23 21:16:44 -0500

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.

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Comments

@Kristi986 This is not the answer.

ak1 gravatar imageak1 ( 2018-09-19 05:47:41 -0500 )edit

@Kristi986 - post deleted due to spam link

berak gravatar imageberak ( 2018-09-21 03:18:24 -0500 )edit