I have a different problem than youtube-dl
In fact I think it has an easy solution.

I had mytube in a previous maemo tablet and I downloaded some videos, now I copied the folder to my new n800, from mytube I can see the thumnails, names and categories but when I press play button, mplayer opens the video in a very reduced size and with bad colours.

I suppose the section mplayer in mytube preferences should be changed..
Can you check what do you have there?

If i open the videos directly from mplayer, it fails too
However if if I open from kmplayer and using mplayer as player they are displayer correctly...


I have mplayer 1.0rc1-maemo.29.n8x0