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Blue_MiSfit · 15th February 2021, 22:55

You've got some learning to do

Maybe start here:

https://trac.ffmpeg.org/wiki/Encode/H.265

A basic command that will give you decent compression for most content without getting too slow would be something like the following:

Code:

ffmpeg -i input.mp4 -c:v libx265 -preset medium -crf 22 output.mp4

If you want to downscale (e.g. to 1080p assuming you're coming from a UHD source)

Code:

ffmpeg -i input.mp4 -vf scale=w=-2:h=1080 -c:v libx265 -preset medium -crf 22 output.mp4

Drop the CRF value to increase bitrate / increase quality. Raise the CRF to do the opposite.

I'd suggest determining whether the default medium is tolerable in terms of speed. Use the slowest preset you can stand, and then tune your CRF value.

15th February 2021, 22:55	#2 \| Link
Blue_MiSfit Derek Prestegard IRL Join Date: Nov 2003 Location: Los Angeles Posts: 5,989	You've got some learning to do Maybe start here: https://trac.ffmpeg.org/wiki/Encode/H.265 A basic command that will give you decent compression for most content without getting too slow would be something like the following: Code: ffmpeg -i input.mp4 -c:v libx265 -preset medium -crf 22 output.mp4 If you want to downscale (e.g. to 1080p assuming you're coming from a UHD source) Code: ffmpeg -i input.mp4 -vf scale=w=-2:h=1080 -c:v libx265 -preset medium -crf 22 output.mp4 Drop the CRF value to increase bitrate / increase quality. Raise the CRF to do the opposite. I'd suggest determining whether the default medium is tolerable in terms of speed. Use the slowest preset you can stand, and then tune your CRF value.