[Libav-user] Problems decoding h264 (Baseline, yuvj420p) ip camera stream

Alexander Wischnewski aw.wisch at googlemail.com
Fri Jun 7 15:33:21 CEST 2013

Its not needed but i am always using it for testing.

Yes, the chipsets of the cameras are different, the protocol for the stream
is the same. Thats at least what the documentation of the manufactor
says.The camera with the working stream is an older model, i never had this
kind of trouble before. I am using a small C program for fetching the
stream and writing the received bytes to a file.


2013/6/7 Carl Eugen Hoyos <cehoyos at ag.or.at>

> Alexander Wischnewski <aw.wisch at ...> writes:
> > The file h264_ip_cam_input.working of the first
> > camera gets decoded well with the command:
> Do I understand correctly that one camera produces
> a stream that FFmpeg can decode but another one
> produces a stream that cannot be decoded?
> Or do I misunderstand?
> Mostly out of curiosity:
> How did you produce this file?
> > ffmpeg -f h264 -i h264_ip_cam_input.working output.mp4
> Is "-f h264" needed, ie does auto-detection not work?
> Please do not top-post here, Carl Eugen
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