nFLVPlayer plays Flash Video (tm) format also known as .flv.
This format provides the best available compression out there through the VP6 codec. At this time this is the best video format for online video playback ... but it lacks support in other means of usage.
nFLVPlayer can also be used to play videos from most large online sources (like YouTube, Google Video, Pornotube, Metacafe, iFilm, Dailymotion,Collegehumor,LiveClip, Myspace,Blastro , Blennus, Blip.tv, Bofunk, Bolt, fliqz, AOL, Break.com, Castpost, CollegeHumor, Current TV, Dachix, Danerd, DailySixer.com, DevilDucky, Double Agent, eVideoShare, FindVideos, Free Video Blog, Grouper, Hiphopdeal, Music.com, MusicVideoCodes.info, MySpace Video Code, Newgrounds, PcPlanets, Pixparty, PlsThx, Putfile, Revver,eefoof,Professional Rockstars and many more. ) providing you get the proper URL's.