VLC is program with the most retarded logic I've ever seen.
I want to convert a small file. So, I open it, and select save.
The conversion works ok... but:
It does convert using the play function (playing the file, to read it correctly)... And I have a repeat turned on. So, after 0,1s, it asks me, if I want to overrite the file. If I select yes, it starts again, and asks me again 0,1s later. If I select no, it skips, and asks me again 0,0001s later.
And if that wasn't enough, I cannot turn repeat off, while the popup is shown
And I cannot turn it off either. I have to kill the proccess.
I'd use ffmpeg.