My ffmpeg comes with some ffpreset files:
$ ls /usr/share/ffmpeg libvpx-1080p.ffpreset libvpx-360p.ffpreset libvpx-720p50_60.ffpreset libvpx-1080p50_60.ffpreset libvpx-720p.ffpreset
I'm wondering how can I use them, i.e., specifying different preset files from the command line, and if I can customize them at all?
In https://wiki.archlinux.org/index.php/FFmpeg, it says,
For "using preset files, enable the
-vpre option after declaring the desired
-vcodec". I don't quite understand what it is saying, and what exactly to do.
But somewhere above it, at https://wiki.archlinux.org/index.php/FFmpeg#x265, using the preset is like this instead:
ffmpeg -i input -c:v libx265 -aspect 1920:1080 -preset veryslow -x265-params crf 20 output
Where can I find the meaning of this
veryslow, and other similar options as such?