ffmpeg hanging if input stream dies on Debian 12

[Andrew Wood <andrewjameswood@ymail.com>]

On Debian 11 and earlier if I ran ffmpeg to capture a stream from a 
camera using rtsp it would close the file and exit if the stream died at 
the transmitting end or due to a network failure. Since upgrading to 
Debian 12 ffmpeg now just hangs indefinately if the stream dies. Is this 
a change in the version of ffmpeg and is there a way to restore the old 
behaviour please?

Thanks

Andrew