VEGAS utilizes Windows' HDR functionality, which AFAIK is not supported over SDI output devices like your BlackMagic card. After setting your project settings to HDR, and selecting the proper color space for the media files you add to the timeline (in my case it's VLOG/VGamut, as I shoot in VLOG), use your GPU's HDMI output and enable windows HDR mode to see HDR in VEGAS.
VEGAS utilizes Windows' HDR functionality, which AFAIK is not supported over SDI output devices like your BlackMagic card. After setting your project settings to HDR, and selecting the proper color space for the media files you add to the timeline (in my case it's VLOG/VGamut, as I shoot in VLOG), use your GPU's HDMI output and enable windows HDR mode to see HDR in VEGAS.
Thank You for your fast reply. Should one wait for HDMI 2.1 GPU?
The lenght of the HDMI cable (vs SDI) could be an issue, am I right?
Any HDMI 2.0 or higher GPU will work. That's the vast majority of them released over the past few years. However, a more powerful GPU will make editing smoother.
You can get one-way HDMI cables up to 100ft, and they make cat6 extenders that will carry a HDMI 2.0+ signal over cat 6.
Sorry for being back fr0sty, but I was exploring here (your post) - When using an AJA SDI device, AJA driver version 10.1 is required for audio and video preview. Do not use driver version 10.3.
Should I think that preview (UHD HDR preview via 12G-SDI) could work on AJA?