HDR ST.2084/REC.2020 (Screenshot) Software?

[simple]

I'm looking for a solution to capture screenshots from ST.2084/REC.2020 encoded 4K-UHD blu-ray discs.

I know Xbox will let you capture into the .JXR-format, but I don't have Xbox.


Also, I don't have any 3840x2160 HDR display connected to my PC, I'm on a 1080p 8-bit SDR NTSC 45% laptop.

I know madVR converts to SDR automatically, MPC-HC's EVR renderer will only capture 8-bit.


Is there any free software that's able to capture 10-bit, 3840x2160, ST.2084/REC.2020 screenshots?

FFMPEG?


The screenshots will be used for HDR Heatmap + WCG Analysis.

Thank you, first time poster!

[simple]

I found a freeware, see below:

https://www.videohelp.com/software/LosslessCut


Captures with a 16-bit gamma integer if you select to save screenshots in .PNG-format.

Captures the complete 3840x2160 resolution, no need for a 3840x2160 monitor/display.


Works with both .MP4/.MKV.

Used FFMPEG to switch container from .MP4/.MKV - no issues.


Cheers!