ClipGrab is an open source tool for downloading and converting online videos. It currently supports YouTube, Vimeo, Dailymotion, CollegeHumor, MyVideo, Sevenload, Clipfish, MySpass and Tudou. Many other sites are supported via the heuristics filter (e.g. several adult sites, gloria.tv and many many generic sites). ClipGrab can convert the downloaded videos to MPEG4, WMV, OGG Theora, MP3 and OGG Vorbis - or simply store the videos in their original format. ClipGrab can download videos in HD from sites where this quality standard is available. On PPCs, ClipGrab only supports downloading and not converting videos.
What's new in this version:
ClipGrab is now available as Universal Binary for both Intel and PPC Macs - converting is only supported on Intel Macs, though.