Web Convert

OGV:

in_old = "path_to_vid.mp4"
new = ${in_old%.*}.ogv
ffmpeg -i $in_old -codec:v libtheora -qscale:v 6 -codec:a libvorbis -qscale:a 6 $new

MP4:

ffmpeg -i Web*.mov -an \
  -vf "scale=1920:-2:flags=lanczos,fps=30" \
  -c:v libx264 -preset slow -crf 22 \
  -pix_fmt yuv420p -profile:v high -level 4.1 \
  -g 120 -bf 2 \
  -movflags +faststart \
  frontvideo01.mp4