[FFmpeg-user] Issue with ffmpeg 8:4.3.6-0+deb 11u1+rpt2 ?

[Gordon Train]

I have a python script on a Raspberry Pi which captures Video frames and
then l use cv2.VideoWriter , which l believe uses ffmpeg in Linux, to write
mp4 files.

Code https://github.com/Gordon999/Pi_Videoer

All worked fine until this latest pi update which now includes this version
of ffmpeg and now l get very red mp4s.

Command l am using...

Out =
cv2.VideoWriter(logfile,cv2.VideoWriter_fourcc(*'H2264'),25,(1088,1088)))

I am using RaspiOS 64bit, and simply install opencv with sudo apt install
python3-opencv

Hopefully this is the correct place to ask this.

Gordon