Since those are pseudo-palette formats, swscale does not write
into data[1], swscale must initialize the palette properly itself.
This lead to frames that actually decoded as all-gray before.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
The default of 9 gives different results on different FATE systems.
However the zlib test using compression level 6 works, so
try this instead.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
More specifically, PNG, v210, zlib and zmbv codecs.
zmbv needs vf_scale to be able to produce PAL8.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>