These videos are tests of the various, often proprietary, codecs which ship with Quicktime X. Some of these are supported in open- source software like ffmpeg, though others (like Apple Intermediate Codec) are not.
Two formats were omitted, due to difficulties enticing Quicktime to export the test pattern to them: Apple ProRes 4444, and Apple Pixlet Video.
These videos were created from an ffmpeg test pattern. The command used to create the original raw video was:
ffmpeg -f lavfi -i testsrc -c:v rawvideo -c:a none -t 1
The raw video was then encoded using Quicktime 7. Default settings were typically used, and "Prepare for Internet Streaming" was disabled. If a quality setting was available, the highest option was chosen.
All videos are 320x240 at 25fps for one second with no sound, unless the codec imposed a particular resolution or framerate.
If the codec offered an option of interlaced vs progressive, one video is provided for each.
These were created using ffmpeg's builtin "testsrc" test pattern, which is presumed to be unlicensed. ffmpeg's code is GPLv2 licensed.
A professional video editing codec, intended as an editing format rather than a delivery format. Not supported by ffmpeg.
The various XDCAM codecs are specific profiles of MPEG-2 used in professional video. XDCAM HD is an anamorphic format, while XDCAM EX is a full-resolution HD format. XDCAM HD422 is a full-resolution format which uses 4:2:2 chroma subsampling instead of 4:2:0.