"Washed" Colors about adobewebm HOT 3 CLOSED

Yeah, I can certainly see a difference. The latter looks more yellow/green, while the former looks more red/magenta.

I guess you're importing the original into Premiere or Media Encoder to create the WebM? What does it look like in that program? What if you export a PNG sequence?

If I had to guess, it has something with the different YUV primaries between 601 and 709.

from adobewebm.

Curiously, Premiere's preview shows me pretty much what I get from the WebM screenshot, that's why I captured after rendered instead.

I read somewhere in a possibly dead FFMPEG forum, in which a user was trying to convert a video to WebmM with it and had the same color issue I described and someone commented:

It is expected to see some changes after converting rgb24 to yuv420p

Not sure if that's apply to the case but it could be useful, who knows

from adobewebm.

OK, I've done some more digging and I think I can say with 100% certainty that my hunch was correct: the issue here is that the two programs are using different YUV coefficients. In this case it appears Premiere is using 709 while VLC is using 601. If the original source is Blu-ray, then it should have been in 709, so Premiere is showing it correctly, not VLC.

Ideally these programs would let you choose which coefficients to use. Since Premiere doesn't, I've made a couple LUT files you can apply in Premiere to convert to the other coefficients. Get them here:

http://www.fnordware.com/downloads/701to609_LUTs.zip

This change is not due to RGB<->YUV conversion. 4:4:4 RGB to 4:2:0 YUV is not lossless, but it gives you various other artifacts, not big color shifts.

from adobewebm.