encode video for web
- OGG/Theora
avconv -i input.mov \ -acodec libvorbis -ac 2 -ab 96k -ar 44100 \ -b 345k -s 640x360 output.ogv
- WebM/vp8
avconf -i input.mov \ -acodec libvorbis -ac 2 -ab 96k -ar 44100 \ -b 345k -s 640x360 output.webm
Video are resized to 640×360 with a bitrate of 345k.