line 116, modify 'Downloding' to 'Downloading'.
It looks like nothing, but it is very annoying when youtube-dl command's output is parsed to find progress on a php (or other language) website for example.
Since keep_video started as None we always set it to keep_video_wish unless it was None, so in the end keep_video == keep_video_wish. This should have been changed in f3ff1a3696, but I didn't notice it.
On the tracks I tested the server number in the url from the webpage is valid
for the mp3 or the m4a file and any other number is invalid, it's a
waste of time to check them.