Can the mpv cache be safely cleared (on Linux)?

[user-1-2-3-4-5]

On my system mpv currently has close to 350 directories in its cache folder, with over a thousand files. While they take merely ~12 MB, I prefer starting with a clean slate to avoid playback issues (I near-exclusively play local media). Especially if mpv doesn't automatically clear the cache, using the crontab's @reboot directive with rm could be useful.

@reboot rm -r /home/user/.var/app/io.mpv.Mpv/cache/*

I use the Flatpak build on Fedora since otherwise I'd have to rely on the third-party repository RPM Fusion for video playback. It seems that the Flatpak release doesn't use the ~/.cache path but stores the cache in the Flatpak-specific path ~/.var/app/io.mpv.Mpv/cache.

[guidocella]

You can just set --gpu-shader-cache-dir to tmpfs.

[user-1-2-3-4-5]

You can just set --gpu-shader-cache-dir to tmpfs.

I forgot to very whether manually specifying the cache path is supported. Also the --icc-cache-dir setting may be relevant. Additionally --demuxer-cache-dir is related:

Directory where to create temporary files. Cache is stored in the system's cache directory (usually ~/.cache/mpv) if this is unset.

Currently, this is used for --cache-on-disk only.