https://en.wikipedia.org/wiki/Comparison_of_video_container_formats
The above lists ~20 formats (~15 ignoring variations).
For the difference between AVC1 and H264 see: https://creativecow.net/forums/thread/avc1-vs-h264
Interesting program that detects system changes during program installations and displays them in a treeview. Seen in Ross Scott's "Mage Knight Apocalypse" Game Dungeon video (at 27m:45s).
NOTE: Not to be confused with InstallWatch, a part of the CheckInstall suite for Unix-like platforms.
User names are always case sensitive (ref).
File names are treated case-insensitively on Windows https://stackoverflow.com/questions/238608/case-insensitive-filename-handling-in-mercurial