Built-in function to detect the kind of a request (like Audio, Video, Image, MIDI, Stream, …)?

[Moonbase59]

For use in the autocue2 protocol (or in general), do we have a builtin function to say what we got in a request or file?

I’d like to start processing on audio and video content only, not on images, MIDI, remote streams or other types. (See also: Moonbase59/autocue#1)

If that doesn’t exist, can we somehow use the kind metadata returned when resolving a request, and is this always available?

[toots]

That's a good idea. I'll try to implement something. Meanwhile, you can access the file that was resolved and inspect it via ffprobe or similar.