add support for ffprobe

[prabirshrestha]

Seems like this downloads ffmpeg and ffprobe and correctly places both the files after extraction. But there are no equivalent functions for ffprobe. Would it be possible to add these?

• ffprobe_version()
• ffprobe_path()
• FfprobeCommand

[nathanbabcock]

Fine idea! I linked a PR which adds all of these except the FfprobeCommand wrapper. I'm totally open to it but it's out of scope for me right at the moment. If you have any ideas what the API for FfprobeCommand should look like (e.g. which aliases are most convenient and most-often used), please feel free to create a follow-up PR taking this as the starting point.

[prabirshrestha]

ffprobe_path is the most important one I need.

I use ffprobe -print_format json -show_format -show_streams -loglevel quiet.

It returns json which I then parse by serde_json so FfprobeCommand is not necessary for me.

[revofusion]

Just adding here, most common used command here is

const args = [ '-loglevel', 'fatal', '-print_format', 'json', '-show_format', '-hide_banner', '-i', path ]