"A lot was said lately about the Vorbis/Theora vs h.264/AAC situation on the draft of the HTML5. As some of you know, video is my main hobby these days (I care not about operating systems anymore), so I have gain some experience on the field lately, and at the same time this has made me more demanding about video quality. Read on for a head to head test: OGG Theora/Vorbis vs MP4 h.264/AAC. Yup, with videos. And pictures."