Does x264vfw actually support writing lossless 4:4:4 and/or >8bit content?
I'm trying 4:4:4 in Premiere (CS6) but I always end up with 4:2:0. MediaInfo
shows the correct 'High 4:4:4 Predictive@L5.1' profile, but it shows 'Chroma
subsampling' as 4:2:0. Visually I can see that it's not 4:4:4 either.
Is there a trick/setting to making this work, or is it not implemented yet? I
need this for my master & archived renders - lossless x264 is really nice as
it has very small file sizes (smaller than Lagarith etc), yet still plays back
in realtime. It would also be one of the very few 4:4:4 YUV codecs that work
properly on Windows (ie. without gamma/colour shifts like DNxHD etc).
4:4:4 YUV is desirable for YUV content as you don't have to go through a RGB
conversion / studio->full level expansion (like you do with 4:4:4 RGB
Currently x264vfw can't encode in 4:2:2/4:4:4 or RGB. There is plans to add
support for this in next release (and yes that would be useful for true
lossless encoding). As for >8bit encoding there is no currently such plans and
if / when such thing would be added it would need separate binary probably
(there is problems to have both 8 and 10 bit version of libx264 in one
Thanks, I'm really looking forward to 422/444. >8bit would be excellent too,
I'm a programmer myself so if I can find any time I'd like to help. A separate
binary/codec would be fine.