[FFmpeg-user] stream would stop if given an output format, but not if I use -c copy

[Roger Pack]

> I am unable to keep a live stream alive for more than 4 minutes if I specify the -f flag, however if I specify '-c copy', the live stream will not break and will continue. The end goal is to restream it through a localhost socket or something along those lines for use in another application.

does rtmpdump work on it for more than 4 minutes?
-r