[FFmpeg-user] Converting video to MP4 through pipes

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Sep 25 10:14:12 CEST 2012

Thierry Florac <thierry.florac <at> onf.fr> writes:

>   [mp4 @ 0xc88200] muxer does not support non seekable output
>   Could not write header for output file #0 (incorrect codec
>   parameters ?)
> Any idea about how to solve this ?

There is no way to solve it, the mp4 file format does not 
allow writing to a pipe (some information that is not 
known when starting encoding is needed to write a valid 

Carl Eugen

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