Some video thumbnails on Nautilus are not generated on Silverblue 40

I think it is possible, but libavcodec-freeworld and ffmpegthumbnailer seldom cause issues during upgrades.

You can use distrobox to create a Fedora 40 container and install RPMFusion repo,
ffmpegthumbnailer, and libavcodec-freeworld in the container. Then, within the distrobox container, use the following commands:

distrobox-export --bin $(which ffmpeg) --export-path $HOME/.local/bin
distrobox-export --bin $(which ffmpegthumbnailer) --export-path $HOME/.local/bin

to export those binary files to your home directory. Check that $HOME/.local/bin is in your environment path, and then you can use these packages independently from the host system.

However, there is few documentation available, and I’m not sure if this method will cause other issues.

More details about additional codec and thumbnailer can be found here:

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