[FFmpeg-user] Combining yuvj422p and yuvj420p

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Aug 12 10:11:35 CEST 2014

Cecil Westerhof <Cecil <at> decebal.nl> writes:

> >> -pix_fmt yuvj422p \
> >
> > Unrelated: This is wrong and misleading, no known 

Note this word.

> > mpeg4 asp encoder (or decoder) supports anything 
> > else than -yuv420p.
> Without it did not work also.

Of course not, see above.

> Until know all my pictures where in yuv422p, but 
> know there where also yuv422p pictures. I had done 
> some searching on the internet and somewhere this 
> was recommended.


> I am going to remove it again. 

> (Or maybe I should change it to yuvj420p.)

No known mpeg4 asp encoder or decoder supports 
yuvj420p, so this doesn't make sense. The only 
supported colourspace for all mpeg4 asp encoder 
and decoder I know is yuv420p. Since it is the 
only supported colourspace in FFmpeg's encoder 
you don't have to specify it.

Carl Eugen

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