Quote:You could download FFmpeg and then convert your video as follows:
ffmpeg -i your.vid -vf scale=iw/2:-1 -an out.mp4
This will reduce your input video (-i) in resolution to one quarter of the input resolution (-vf …), get rid of the audio (-an), transcode your video using the default encoder (probably libx264), and put the result in an MP4 container. If you want to keep the audio, just leave out the -an switch.
Edited by Ueberglock - 3/12/13 at 4:56pm