# QUADPLEX
#
# input.mkv is 640x360
# output.mkv will be 1280x720

avconv -i input.mkv -vf "[in]setpts=PTS-STARTPTS,pad=iw*2:ih*2:iw:0,[T1]overlay=0:0,[T2]overlay=0:overlay_h,[T3]overlay=overlay_w:overlay_h[out];movie=input.mkv,setpts=PTS-STARTPTS[T1];movie=input.mkv,setpts=PTS-STARTPTS[T2];movie=input.mkv,setpts=PTS-STARTPTS[T3]" -vcodec mpeg4 -qscale 2 out.avi