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 Given the dominance of the VCD and DVD formats, MovieCD never gained a significant following. Compatibility and issues with modern PCs Compatibility All MovieCDs had the MVI2 codec on them ready to install, and most video games with them installed both codec and player without asking the user. Both are still an issue today due to the wide availability of MovieCDs until around 2000 and the cult following some of these games still have. Both versions of the MP codec installing executable for Windows remain available on the web from third-party downloading sites for free manually as well as within codec packs. The codec's Windows 3.x and 95 version still runs more or less on Windows 98; however the videos often crash as this version of the codec was still a pre-DirectX artifact, even though they can even be played with any other video players on Windows 95 and Windows 98 once the MP codec is installed. On Windows NT, Windows 2000, and Windows XP, MP's NT version awarent.exe is needed. MP videos run stable on these Windows versions, and the codec can even be used to encode own videos into MotionPixels files, however serious other issues arise no matter which version of MVI2 is installed. Issues As soon as any version of the MotionPixels codec Windows version MVI2 is installed on any post-Win98 Windows OS, any video and audio-editing software on the same system may crash as soon as a codec-choosing dialogue for saving a file is opened. Additionally, players might be unable to read a variety of other audio and video codecs, and a variety of other both software and hardware-related video problems might occur, such as TV-cards ceasing to function. Running MotionPixels's uninstall routine that only removes the MotionPixels Player,