sudo add-apt-repository ppa:jon-severinsson/ffmpeg
sudo apt-get update
sudo apt-get install ffmpeg
sudo apt-get install frei0r-plugins
OGG/Theora
ffmpeg -i input.mov \
-acodec libvorbis -ac 2 -ab 96k -ar 44100 \
-b 345k -s 640x360 output.ogv
WebM/vp8
ffmpeg -i input.mov \
-acodec libvorbis -ac 2 -ab 96k -ar 44100 \
-b 345k -s 640x360 output.webm
MP4/h264
ffmpeg -i input.mov \
-acodec libfaac -ab 96k \
-vcodec libx264 -vpre slower -vpre main \
-level 21 -refs 2 -b 345k -bt 345k \
-threads 0 -s 640x360 output.mp4