Output REC2020 HLG Master

Get answers to your questions about color grading, editing and finishing with DaVinci Resolve.
  • Author
  • Message
Offline

Serge Alves

  • Posts: 7
  • Joined: Fri Feb 13, 2015 7:21 pm

Output REC2020 HLG Master

PostMon May 29, 2023 10:49 am

Hi,

I'm creating a Master from a film graded in Color Space REC2020, Gamma REC.2100 HLG.

If I export the file with Gamma Tag "Same as Project" or if I force to REC.2100HLG, when I take it back the file to Resolve, Resolve detects inputGamma REC.2100(Scene) and picture is a lot brighter. If I force InputGamme to REC.2100, picture is ok.

Why Resolve detects inputGamma REC.2100(Scene) instead of REC.2100 which was choosen during creation of file ?

I'm a bit disapointed.
I have to deliver to TV, a REC.2020, REC2100 HLG program. How to do it with resolve please ?

thank you for advance.

Serge
Offline
User avatar

shebbe

  • Posts: 1059
  • Joined: Tue Mar 06, 2018 11:48 am
  • Location: Amsterdam
  • Real Name: Shebanjah Klaasen

Re: Output REC2020 HLG Master

PostMon May 29, 2023 12:09 pm

I don't have experience with such deliveries but have you checked the metadata of the file or played it back via a different app? It may be that Resolve just auto tags it as scene.
Home System Resolve 18.6b9: Z790 / i9 13900K / 64GB DDR5 / RTX4090 / Win 11 / ASUS PA32UGC 1600 nits
Office System Resolve 18.6b9: X570 / Ryzen 9 5900X / 128GB DDR4 / RTX4090 / Win 11 / EIZO CG248-K
Offline

Serge Alves

  • Posts: 7
  • Joined: Fri Feb 13, 2015 7:21 pm

Re: Output REC2020 HLG Master

PostMon May 29, 2023 1:20 pm

shebbe wrote:I don't have experience with such deliveries but have you checked the metadata of the file or played it back via a different app? It may be that Resolve just auto tags it as scene.


Hello shebbe,

Like you, I suspect that Resolve misinterprets the Gamma when importing.
I tried to check the metadata with MediaInfo, but I couldn't find anything about Gamma.
Adobe Première doesn't show anything either.
I checked with Avid MediaComposer without success.

Do you know a software able to check this type of information ?

Thanks
Offline

Dermot Shane

  • Posts: 2734
  • Joined: Tue Nov 11, 2014 6:48 pm
  • Location: Vancouver, Canada

Re: Output REC2020 HLG Master

PostMon May 29, 2023 6:01 pm

i don't use HLG,
but do see correctly tagged 2020/2084_1000n needing to have the same values set manualy on import if it's a Qt /MXF / TIFF file,

IMF imports correctly

Drastic's media anylisis tool shows tags

Return to DaVinci Resolve

Who is online

Users browsing this forum: AndrewHallNZ, Bing [Bot], panos_mts and 148 guests