[Suggestion] add ffmpeg as part of the runtime

Greetings.

Not a bug report, just a small suggestion.
A small game (Your only move is hustle) has a mod (YomiRecord) that requires access to a binary form of ffmpeg to create video replay files. As the runtime sandboxes the binaries, if a game requires one that is not included in the runtime, you just can't access it (as a workaround, the legacy runtime 1.0 seems not to have this feature)
I know the native steam replay feature may be the reason ffmpeg is not included (anymore? yomirecord broke quite recently) but it could be useful still for such a common program to be included in the standard runtime.

Feel free to lock this issue if it doesn't fit the tracker CoC or if you deem this suggestion is invalid.

Have a wonderful day.

EDIT : wait, am i even at the right place to ask this? Or shall i go to the steamos gitlab?

Start by confirming whether steam-runtime is the correct tracker and how runtime binaries are packaged; the issue provides no file or test entry point. Done would mean ffmpeg is available to sandboxed games that need it without relying on the legacy runtime.