[FFmpeg-user] 2 pass encoding with hevc_nvenc

[Reindl Harald]

Am 04.09.2016 um 13:57 schrieb Peter White:
> But I never saw the point of running two passes to improve the quality
> of a file encoded with CRF mode. The quality improvement must be very
> small, I reckon. But the encoding time doubles--not worth it

with smart params it don't double

the first pass can be with a faster profile and skip audio entirely and 
so it's typically around 50% of a normal run and often far below

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