Update required FFmpeg version

[minijackson]

Hello! I maintain Carla over on the NixOS Linux distribution, and we're trying to migrate away from ffmpeg <= 3.x, due to several vulnerabilities (see NixOS/nixpkgs#94003 and NixOS/nixpkgs#120372).

I looked at the Makefile and saw that Carla requires ffmpeg v2.8.15 maximum, which felt weird to me, since currently on NixOS it is packaged with ffmpeg 3.4.8. I'm not sure how those pkg-config commands didn't fail.

Carla builds fine with ffmpeg 3.4.8 and ffmpeg 4.3.2, but I'm not sure where the ffmpeg decoder is used. I tried using the Audio file internal plugin, but couldn't hear anything, I'm not sure if this is a user error or an issue with our build, but Carla didn't crash with ffmpeg 4.3.2.

Do you think it would be possible to upgrade the required ffmpeg version? Or should we ship Carla without ffmpeg support?

Thanks for the great work!

[falkTX]

Just dont use ffmpeg. that part is legacy code.
At some point I am going to update it, but didnt bother with it yet. the main use was for mp3 support but there is a different/new library built-in carla for that now.

[minijackson]

Got it, thanks! Should I leave the issue opened?

[falkTX]

depends on how much you care to see this (re)added.
it is not a priority for me at all, likely for many months

[minijackson]

I'll close this then