this post was submitted on 16 Jan 2024
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Check which version of ffmpeg it's using and whether it has hardware acceleration for that codec.
Also bear in mind that you can't hardware decode and hardware encode at the same time on the same device. If that's what you're trying to do it's probably falling back on software silently in Windows instead of telling you.
I saw that in the docs. I am only interested in encoding in AV1. My CPU is a 5900x so it's decent enough at decoding. I'll check ffmpeg settings.
Why can't you decode and encode on the same device at the same time? I thought you could do a couple in parallel (but haven't done so in a while)
Because one process will be running on the hardware, because of the way it works it can't really share that hardware between processes. I'm not sure if that's entirely a hardware limitation, but it seems to be enough of one that software hasn't overcome it.
What if that process had multiple streams to decode/encode?