[FFmpeg-user] Converting video to MP4 through pipes

[Carl Eugen Hoyos]

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 
file).

Carl Eugen