Daniel Lobo wrote:
Hi all,
I'm having a problem with the color space trying to encode a raw
video into mpeg4.
The following command (full output at the end of this email):
mencoder -vc rawbgr24flip input.avi -ovc lavc -lavcopts vcodec=mpeg4
-nosound -o output.avi
prints: [swscaler @ 0335C550]using unscaled bgr24 -> yuv420p special
converter
and the colors in output.avi are not the same as the original, I
suppose because the multiple conversions between color spaces.
So my question is if there is a command-line arg to force a bgr24 ->
rgb32 special converter during the encoding process in order to avoid
those unnecessary conversions.
From a little digging in the man page, I think you want a combination of
'-vf scale' and '-vf format'. Exactly what the syntax would need to be I
don't know (I think it's something like '-vf format=rgb32,scale', but I
can't swear to that), but it ought to be possible to find out via
experimentation.
--
The Wanderer
Warning: Simply because I argue an issue does not mean I agree with any
side of it.
Secrecy is the beginning of tyranny.
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