[FFmpeg-user] Poor quality output when converting avi to mp4
uwillmore at remotegeo.com
Mon Jul 24 22:15:30 EEST 2017
crf stands for constant rate factor. Allowed values are between 0 and 51,
default is 23. To get better quality, use a lower number. The recommended
start value, if the default does not work for you, is 18. 0 is lossless.
You can read on the topic here: https://trac.ffmpeg.org/wiki/Encode/H.265
On Mon, Jul 24, 2017 at 12:57 PM, Phil Rhodes <
phil_rhodes-at-rocketmail.com at ffmpeg.org> wrote:
> I'd be interested to know what "crf 23" actually means.
> How do I get it to do, say, 2.5Mbps?
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