The Flip Video UltraHD camcorder records files in a .mp4 format. I wanted to convert them to Ogg Theora format. How do you do that? I did far too much searching for an answer to this question for the answer to be this easy:
apt-get install ffmpeg2theora
That outputs a file called vid00001.ogv and you’re done. Find further information about the fabulous ffmpeg2theora at its website.