Encoding Discussion Megathread (ffmpeg, Handbrake, AV1, etc...)

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Depends on the encoder. If we're talking av1_qsv, I've found that currently only 8->8 and 10->10 works properly. Everything else gives me an error. So that's dependent upon source and is automatic. By default, if you're doing a one-for-encode without mapping anything, any necessary metadata should come over with the encode automatically and the doesn't appear to be a flag like with SVT-AV1.

So in my experience, it's almost automatic. When mapping streams, you need to ensure that you map the metadata correctly in most cases, which I'm still struggling with a bit. I haven't had a single AV1 encode with HDR fail, though without the metadata I have had encodes fail to play properly.

On profiles/levels: they don't work the same as HEVC. Profile should be main for nearly everything, as I think the next up is professional? Run ffmpeg -h encoder=av1_qsv for more details about what options are available. Note that a lot of things are broken at the moment.