How to export HDR10 with 2 GPUs

Question

In my system, there are 3 GPUs. A GTX 1660 TI OC 6GB, a GTX 1080 SC2, and intel UHD730.
 
I am looking to output a video file in HVEC with HDR10 (PQ, 4k UHD) recorded on my galaxy s24 (standard), BUT... Because of TWO DIFFERENCES in the turing encoder and the pascal encoder, it won't touch my 1080.
 
Here's the thing:
The 1080 DOES NOT support B-frames in HVEC mode and lacks the abillity to normalize multiple frames or whatever.
 
HERE'S THE ISSUE:
I come from Shotcut, so disabling these settings in my encoder prefrences is usually an option, but Adobe's complete and utter lack of hands-on hardware control makes it IMPOSSIBLE!
 
I have used blender with both GPUs, I have tried OpenCL options in premire, IT JUST WON'T WORK!!
 
I am VERY tempted to STOP using this software, as making an entire GPU worthless (and my main one at that) JUST BECAUSE OF 2 DISCREPANCIES IS SO DUMB!! I JUST WANT TO DISABLE B FRAMING AND MULTIPLE REFERENCE FRAMES FOR HVEC! it would be that simple.
 
My full system specs include:
GTX 1080 SC2 from EVGA (typically hovers around 1990 Mhz)
 
GTX 1660 TI OC 6GB (typically hovers around 1890 Mhz, Routed over 4x PCIe to NVME riser over northbridge)
 
UHD graphics 730
 
32 GB 3200MHz dual-channel DDR4
 
i5 12400
 
GIGABYTE b760 D3sh (rev 1.1)
 
8 TB of mismatched storage (Adobe products on G drive)
 
Sound Blaster X AE-5 plus pure edition (for Dolby/DTS 32 bit 384 Khz exporting, not used here.)
 
Eluting 7 port dual controller PCIE x1 USB3.0 hub
 
PCIe to 4x SATA adapter

It is obvious that my machine was purpose built for a variety of tasks, MAINLY being photo/audio/video manipulation, and I know exactly what i'm talking about. It is Adobe's fault. I am quite frusterated that after downloading the latest software or whatever  FORCED me to throw away a good chunk of my PC.
 
Anybody got a solution? Custom drivers? Manipulating premire and media encoder manually through code? something in the Nvidia control panel? There's gotta be something other than... you know... JUST NOT USING HDR OR HVEC.

RjL190365 · Accepted Answer

Adobe is not the only one that does that. All other video editing software programs do that, as well. No software at all can utilize two or more different encoders simultaneously – period. In the case of your system, both of your Nvidia GPUs use completely different generations of NVENC; in such an instance, video editing software will utilize only the newer-gen encoder. Many other NLE software will use only the CPU for encoding (aka software encoding).

If you must use two encoders simultaneously, they must be of the exact same encoder generation (for example, a Turing encoder must be paired with another Turing encoder for this to work at all). That means that your GTX 1660 Ti can only be used with a GeForce 16- or 20-series GPU for the two encoders to work together at all.

kglad · Answer

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

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