As a user of the firefox downloadhelper plugin and apple user I want to have my videos in mp4, mov or mpeg format. Downloadhelper generates .flv files which have to be converted. iSquint may here be the tool of choice. It is no longer supported and there is no more development on the tool but it works flawless for me. Simply drop files you want to convert for your iPod or iPhone to the list within the gui, press start, that’s it. Download Link.