As per title, on Vegas Pro 18 (build 334), I cannot render a HEVC MP4 using the NVENC encoder, when the encoder preset is set to "Lossless" or "Lossless - High Performance".
The error message that comes up immediately upon the render starting states:
"An error occurred while creating the media file [FILENAME].
Error 0x80660008 (message missing)".
This error code appears in one other topic on this forum: https://www.vegascreativesoftware.info/us/forum/can-t-render-fullhd-50i-footage-with-nv-encoder-in-vegas-16-pro--115337/
Rendering an AVC MP4 (using the "Lossless" NVENC preset) works.
Rendering HEVC under any other preset also works.
I'm almost certain that it was an NVIDIA driver update that caused this problem to start. My current driver is 456.38 (the lastest one). I've rolled back the driver, reinstalled VP and reinstalled my OS to no avail.
My GPU is an NVIDIA GTX 1060 Mobile.
My OS is Win10 Home, ver.2004.
The footage being used is recorded gameplay from OBS.
I will try rolling back to a recent driver and a much older one to see if the problem persists.
Can anyone help?