- Posts: 126
- Joined: Wed Dec 17, 2014 12:42 am
- Location: Vienna, Austria
Tue Dec 29, 2020 12:40 pm
I am surely not the only user of DVR that has come across this problem:
When importing footage of say a concert into a ACES project, the highlights and colored LEDs look off and blown out, severe gamut excursions all over. Not matter what I do I can't get those things to behave nicely. It seems this is happening at the IDT stage.
I do have a solution though, convert to ACES linear and AP0 coloraturas space first and then apply gamut mapping with saturation compression. This works BUT only in a YRGB project.
Trying this, you would find doing this post IDT won't work. So for some time I used YRGB Projects, then
ACES node with IDT to ACES AP0 linear > gamut mapping > color space transform to ACEScc AP1 > the usual grading > CST to linear or LogC > some other stuff > ACES transform ODT to rec709 or whatever
This is the only workflow that gives me complete control and it works ALMOST perfectly. The unfortunate thing however is that I like to use a panel in offset mode. But it behaves completely wrong. In ACEScc it's perfect and WB, Tint and Offset do what they should. But in YRGB all is effed up.
I don't know how all of this could be fixed. I basically need a ACEScc project in every way except it having a linear AP0 stage in the beginning and maybe also the end. Again CST and Node Gamma/CS do not work! I am kinda lost and frustrated, because I have been struggling with this for years.
When importing footage of say a concert into a ACES project, the highlights and colored LEDs look off and blown out, severe gamut excursions all over. Not matter what I do I can't get those things to behave nicely. It seems this is happening at the IDT stage.
I do have a solution though, convert to ACES linear and AP0 coloraturas space first and then apply gamut mapping with saturation compression. This works BUT only in a YRGB project.
Trying this, you would find doing this post IDT won't work. So for some time I used YRGB Projects, then
ACES node with IDT to ACES AP0 linear > gamut mapping > color space transform to ACEScc AP1 > the usual grading > CST to linear or LogC > some other stuff > ACES transform ODT to rec709 or whatever
This is the only workflow that gives me complete control and it works ALMOST perfectly. The unfortunate thing however is that I like to use a panel in offset mode. But it behaves completely wrong. In ACEScc it's perfect and WB, Tint and Offset do what they should. But in YRGB all is effed up.
I don't know how all of this could be fixed. I basically need a ACEScc project in every way except it having a linear AP0 stage in the beginning and maybe also the end. Again CST and Node Gamma/CS do not work! I am kinda lost and frustrated, because I have been struggling with this for years.
Last edited by Simon Rabeder on Tue Dec 29, 2020 3:20 pm, edited 1 time in total.