This has been probably asked before. But I can't find any good answers (anywhere) in the Internet. To be completely safe for all platforms you need mp4, ogv and webm (with a fallback to flash). You can achieve that with the video for everybody code. Very nice and just implemented in my page. The problem: I can't find one program that does the conversions. Anyone knows the best out there? Right now I do the mp4 with Visualhub, webm with Squeeze and the ogv with Miro Video Converter. The first two give nice results, but the Miro Converter is not adjustable manually. This gives me for the ogv a too big sized archive and that sucks. Please provide me your experience. Thank you.