Perhaps one hint I found on another product:
NOTE: HDR media requires using a 10-bit codec, which is why compressing 10-bit HEVC quickly is important.
To enable hardware acceleration, be sure to select Faster for the Encoding type in the Video Inspector. Setting the Encoder type to Slower performs compression using software, which is much, much, much slower.
NOTE: On another note, Multi-pass also switches to software-based encoding. In the past, we would do this to improve image quality. Given the speed and quality of today’s hardware-accelerated compression, there are very few reasons to use the Multi-pass option today.
Perhaps this helps...
MagicEye
Thank you for the info, I've checked with the developer again, and he said that our ffmpeg has not yet been updated, so it is not supported, and he is working on the ffmpeg update, it will take some time.
