Blackmagic Forum

Beta8 sets strange color tagging in MOVs:

Color primaries : BT.709
Transfer characteristics : sYCC
Matrix coefficients : BT.709

tried ProRes and Cineform.

What tags do u expect?

Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

at least for HD. Where is this sYCC coming from?

It's (actual headers values):
HD: 1,1,1
PAL SD: 5,1,6
NTSC SD: 6,1,6

as per Apple spec.
https://developer.apple.com/library/con ... qtff3.html

UHD is same as HD or new values for Rec.2020 flagging, e.g. 9,14,9

This is interesting
https://github.com/bbc/qtff-parameter-editor

Not only MOV headers should be set to these values but also in case of ProRes also its own internal metadata headers. This should be aligned to avoid possible issues (as also BBC stated).

Do you have your output gamma in color management set to sRGB?
If so, that will be reflected in the render color atom.

Peter Chamberlain wrote:Do you have your output gamma in color management set to sRGB?
If so, that will be reflected in the render color atom.

Yes, this is possible that for those exports it was set to sRGB.
If this is the way how it works then it sounds good.

update: yes, it looks like it works fine and follows project settings.