For best quality you absolutely need a two-pass encoding, where in the first pass you collect "statistics" which are used to allocate bitrate in the second pass where you do the actual encoding.
I don't think NVENC supports this workflow, which is a big reason it's not suitable for quality encoding.
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For best quality you absolutely need a two-pass encoding, where in the first pass you collect "statistics" which are used to allocate bitrate in the second pass where you do the actual encoding.
I don't think NVENC supports this workflow, which is a big reason it's not suitable for quality encoding.
That's only if you're targeting a given filesize, with a target quality you only need 1 pass