I understand there are multiple issues already present that have crashes related to ffmpeg, but I couldn't find anything that was for the general issue, which is that any error encountered by ffmpeg immediately crashes the game.

This is evident in:

• #950, #871, #462 - Lack of file permissions
• #937, #898, #880, #872, #859, #850, #777(?), #724 - Inability to start ffmpeg due to various issues related with flatpak
• #869, #758 - Lack of RAM available to ffmpeg
• #739 - Unknown, but ffmpeg encountering an issue during rendering
• #507 - Unrecognized flags due to outdated ffmpeg
• #493 - ffmpeg missing a library

There are most likely some more bug reports I didn't find (especially on the forums or bugzilla) but it's pretty clear that this is a common enough occurrence.