ffmpeg is need by ytmdl

[rpesche]

Hello !

At some point, ytmdl launch ffmpeg.

If it's not installed we get an error : ERROR: [Errno 2] No such file or directory: 'ffmpeg': 'ffmpeg'

I think we need to add a check at the very beginning of the executions, because this error apear after searching and selecting a song.

[deepjyoti30]

Thanks for the update, I've been meaning to add that.

[rpesche]

There is youtube-dl to :)

[deepjyoti30]

youtube-dl is already a dependency so the setup.py installs it on installation.

Edit: Pushed it on the latest update. I'm closing the issue.