''. The MP codec offered a resolution of 320x236 pixels, 16-bit
high color, and 16
frames per second fullscreen playback at a datarate of (in theory) up to about 520 kB/sec, without having to install
MPEG or acquire additional hardware, on Microsoft Windows systems from
Windows 3.x on. Audio was saved in plain
WAV format. Its
FourCC code was, depending on version, "MVI1" or "MVI2." For viewing MovieCDs, Sirius recommended a
486 processor or higher, at least 8 MB of RAM, and a 2x-speed
CD-ROM drive (most MovieCDs had a data rate of about 280-300 kB/sec). MovieCDs had a running time of about 45 minutes each, so feature films often were stored on two or three discs in one box, and the consumer had to swap discs to watch the whole movie. The codec avoided digital compression artifacts such as the pixelization or block artifacts (seen in
VCDs using
MPEG-1) by treating areas of the frame as objects rather than dividing it into blocks. Its output was always RGB; however, the viewer could choose between different settings of
chroma subsampling for encoding, from RGB through
YCrCb 4:2:2 all the way to 16:1:1 which ensured for low datarates at what were high resolutions at the time, while a particularly low chroma subsampling made for a distinctively analogue video look to today's eyes, with spatially (not temporally) smeared colors and sharp
luma.
MVI1 MVI1 was a purely DOS-based codec, carrying its animations in an .MVI
container. Apparently, the only occasion it was ever used was with Sirius's game
Treasure Quest.
MVI2 MVI2 was the Windows incarnation of the MotionPixels codec, and always came with its own player, the MotionPixels Movie Player. MVI2 files used the
AVI container still popular today. It saw international distribution during the mid- to late-1990s in the form of Sirius's MovieCDs and many third-party video games (such as the
Caesar series by
Sierra). MVI2 came in three versions: •
aware31.exe: Aware31 was developed for
Windows 3.1x. •
aware95.exe: Aware95 was developed for
Windows 95. •
awarent.exe: AwareNT was developed for
Windows NT and released in 1998. == Economic viability ==