mencoder and ffmpeg ruin videos

edit, the ogv's are ones recorded using gtk-recordMyDesktop, and the squares don't move relative to the windows they are on in the video, IE if there was a grey square at the center of nautilus, even when nautilus is moved in the recording, the square remains in the center of the window.

edit, the thing about them staying with the window is not completely true, they do morph and change to different combinations of squares making different shapes, however they stay in roughly the same place.

What are you converting, from-to?

Ogv to avi, sorry I forgot to say

Yes you should. Details are useful.....

tried:

mencoder "$1" -o $filename.avi -oac mp3lame -lameopts fast:preset=standard -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=4000

or

mencoder -idx input.ogv -ovc lavc -oac mp3lame -o output.avi

or

ffmpeg -i input.ogv output.avi

or

ffmpeg -sameq -i /home/xxxx/x.ogv /home/xxx/x.avi

yes, those are all the commands I have tried, they all give the same result

Oh well, turns out conversion isn't nesscary, despite what everyone says, I just tried uploading an ogv and it worked fine.

forgot to say, thanks for the help