ClipGrab fails silently when libmp3lame is missing
I'm on Ubuntu and I didn't have libmp3lame installed.
I tried to download a YouTube clip as mp3. It failed numerous times without any error message. Only when I started ClipGrab from the console could I see that ffmpeg fails because the library is missing.
ClipGrab should detect whether the library is present and inform the user if it is missing.

Thank you for the suggestion. I will implement a check for ffmpeg in a future version.