Cinelerra is an advanced Free Software video editing tool used by professionals. Software based on it has been used recently in many high-budget films and TV shows. Tho not as simple as Final Cut Pro, it's much more flexible and supports distributed rendering without having to pay a per-node license fee. It supports bezier masks, chroma key, and many other realtime effects previously only found in commercial packages costing several grand per license. Definite potential for IMC use.
http://www.mplayerhq.hu/homepage/ mplayer is a GPL (GNU Public License) video player for linux machines. It's suggested you add libraries of win32 codecs, realplayer codecs and live.com, so that you can play or convert between many, many formats (e.g. "MPEG, VOB, AVI, VIVO, ASF/WMV, QT/MOV, FLI, NuppelVideo, yuv4mpeg, FILM, RoQ, OGG and some RealMedia files, supported by many native, XAnim, and Win32 DLL codecs. You can watch VideoCD, SVCD, DVD, 3ivx, FLI, and even DivX"). As of 25 Dec 2002, at version 0.90rc2)
Use mplayer without having GNU/Linux on your harddisk. Use MoviX live cdrom: http://movix.sf.net One can even build cdrom iso image with video files, bootable live system, player and codecs with a tool that runs on MS windows. These cdrom are great for taking to place where you don't known what computer has installed.
Problem: youtube.com owned by Big Brother Google Corporation has become very popular and people publishing videos do not realise the risks they are taking in terms of dependence and/or being reported to the police in e.g. PRChina, the USA, Sweden or other similar places. Worse, it encourages people to use non-free software. So indymedia is responding to that to offer what free (politically free, not just money free) alternatives we can.