[MPlayer-dev-eng] [PATCH] -ffourcc with raw video

Andrew Wason rectalogic at rectalogic.com
Fri Jul 18 17:44:13 CEST 2008

I'm encoding to raw audio/video in a QuickTime container. I'm encoding
video to YUY2 but the fourcc needs to be set to yuvs for QuickTime
Player to understand it. So I do this:

mencoder input.mp4 -of lavf -lavfopts format=mov -oac pcm -ovc raw -vf
scale,format=YUY2 -ffourcc yuvs -o output.mov

But the -ffourcc ends up being ignored and the resulting video has it
set to YUY2.  Same thing happens for AVI:

mencoder input.mp4 -of avi -oac pcm -ovc raw -vf scale,format=YUY2
-ffourcc yuvs -o output.avi

Initially mencoder.c sets mux_v->bih->biCompression to the value of
force_fourcc (yuvs) but then ve_raw.c:set_format resets biCompression
to YUY2 and this is then used by muxer_lavf.c:fix_parameters or
muxer_avi.c:avifile_write_header to set the fourcc to YUY2 instead of

This patch changes ve_raw.c:set_format to not overwrite biCompression
if force_fourcc is set.

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