[Python] FFMPEG RTSP Stream timeout triggered after 30015.187000 ms

I am trying to read several RTSP streams using opencv cv2.VideoCapture(URL). It has FFMPEG backend. Sometimes for few streams it is throwing timeout warning after 30 seconds.

[ WARN:0@123.394] global cap_ffmpeg_impl.hpp:453 _opencv_ffmpeg_interrupt_callback Stream timeout triggered after 30015.187000 ms


I tried setting up the timeout flag.

import os
os.environ["OPENCV_FFMPEG_CAPTURE_OPTIONS"] = "timeout;5000" # 5 seconds
cv2.VideoCapture("rtsp://URL", cv2.CAP_FFMPEG)


Ref: How to terminate cv2.VideoCapture(rtsp_url) call if execution stalls due to RTSP camera issues?

But still, it is waiting for 30 seconds before raising the warning.

OpenCV version: 4.4.0.x Python version: 3.9.x

Can we decrease the wait time from 30 seconds to a lower number ?

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