Notice of Meeting - ACES Gamut Compression Implementation VWG - Meeting #14 - 7/1/2021

ACES Gamut Compression Implementation VWG Meeting #14

Thursday, July 1, 2021
5:00pm - 6:00pm Pacific Time (12:00am Friday UTC)

Please join us for the next meeting of this virtual working group (VWG). The next few meeting dates include:

  • July 8, 2021: 9:30 am PT
  • July 15, 2021: 5:00 pm PT
  • July 22, 2021: 9:30 am PT
  • July 29, 2021: 5:00 pm PT
  • Aug. 5, 2021: 9:30 am PT

Dropbox Paper link for this group:

Dropbox Paper

Gamut Compression Implementation

Document Workspace Matthias Scharfenberg & Carol Payne - Working Group Co-Chairs Alex Forsythe - ACES Technical Lead Steve Tobenkin - ACES Adoption/Comms Lead

We will be using the same GoToMeeting url and phone numbers as in previous groups.
You may join via computer/smartphone (preferred) which will allow you to see any presentations or documents that are shared or you can join using a telephone which will be an audio only experience.

Please note that meetings are recorded and transcribed and open to the public. By participating you are agreeing to the ACESCentral Virtual Working Group Participation Guidelines

Audio + Video
Please join my meeting from your computer, tablet or smartphone.

First GoToMeeting? Let’s do a quick system check:

Audio Only
You can also dial in using your phone.
Dial the closest number to your location and then follow the prompts to enter the access code.
United States: +1 (669) 224-3319
Access Code: 241-798-885

More phone numbers
Australia: +61 2 8355 1038
Austria: +43 7 2081 5337
Belgium: +32 28 93 7002
Canada: +1 (647) 497-9379
Denmark: +45 32 72 03 69
Finland: +358 923 17 0556
France: +33 170 950 590
Germany: +49 692 5736 7300
Ireland: +353 15 360 756
Italy: +39 0 230 57 81 80
Netherlands: +31 207 941 375
New Zealand: +64 9 913 2226
Norway: +47 21 93 37 37
Spain: +34 932 75 1230
Sweden: +46 853 527 818
Switzerland: +41 225 4599 60
United Kingdom: +44 330 221 0097

Hey @sdyer , looks like this was tagged with the wrong VWG :wink:


  • Doc stubs for Implementation Guide and User Guides, please feel free to add thoughts - doesn’t have to be pretty, just throw things in, or send them to @carolalynn , @matthias.scharfenber or @nick to add.
  • @michaelch: reference implementation in Resolve coming soon. Right now it might only be a clip level setting, project level is more complicated.
  • Right-click context menu for the clip, it’ll be a toggle. Michael is checking whether you can select multiple clips for right-click too.
  • Group prefers a project setting, but it might come later on as it’s a bit more of a discussion to get it in project settings. Ideal place might be in Clip Inspector, but that’s also a longer road.
  • OCIO PR in last looks, please take a look if you have some time. Michael is going to ask the Fusion team about the roadmap around OCIO 2.0.
  • @jzp: in the interim before all the implementations roll out, assuming this is the scenario:
    • On for on set monitoring
    • On for dailies
    • Off for VFX pulls
    • Assumption is that some hand holding will be needed to make sure all vfx returns have it applied, baked into the exrs
    • For conform, non-vfx will get it applied
    • Rare: 2 vfx houses work on a shot, would need to figure out what would happen there
  • The point: it’s ALWAYS on - except for x, y - instead of enumerating all the phases where it’s on.
  • The inverse should technically be fine if it’s the first thing applied on a VFX pull, but you may hit edge cases from quantization due to the half-float EXR file format.
  • Possibly need a section at the end of the user guide for “things you shouldn’t do, but if you do…”

Recording & Transcript