Video converter: ogv to avi (or another more common format)

You can use avconv to convert and optionally resize (it is included with ffmpeg):

avconv -i "input.ogv" -vcodec mjpeg -acodec mp2 -s 640x480 -vb 3000k -ab 160k "output.avi"

This converts your video to a .avi file with mjpeg and mp2 codecs for good compatibility.

avconv -i "input.ogv" -vcodec mjpeg -acodec mp2 -s 640x480 -qscale 5 "output.avi"

This converts your video using quality scale.

winff

Is a GUI for the command line video converter, FFMPEG. It will convert most any video file that FFmpeg will convert. WinFF does multiple files in multiple formats at one time. You can for example convert mpeg's, flv's, and mov's, all into avi's all at once.

You can try with ffmpeg:

ffmpeg -i input.ogv output.avi