[FFmpeg-user] 2 pass encoding with hevc_nvenc

Peter White peter.white at posteo.net
Sun Sep 4 15:24:49 EEST 2016

04.09.2016 14:00, 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

But that then defeats the point of having a /useable/ 1st-pass file. ;)

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