The RPL file type is used for video files that are associated with ARMovie, found on Acorn RISC computer systems. Another use for the RPL file format is as a replay of a match performed in Toribash, a 3D fighting game where players design the fighters’ moves; saved in a high-quality MPEG format that can be viewed on multiple platforms.
A ROQ file format is used for full motion video formats, developed by The 11th Hour by Graeme Devine. It can be found as the FMV format for the video game Quake III: Arena and Doom 3. It stores a user’s gamplay in a vidoe format that can be played back.
The MJ2 format, short for Motion JPEG 2000 contains a motion sequence of JPEG 2000 images. Instead of inter-frame coding each frame, it encodes each frame independently using a JPEG 2000 compression. Several digitale cameras, that allow for the capturing of videos, produce MJ2 files and the MJ2 format can also be found in medical and satellite imagery.
The DIRAC file extension is a royalty-free video compression format that has been developed by BBC Research, named after the dirac-research. The DIRAC format aims to provide the user with high-quality video compression that can be used on Ultra HDTV and competes with other formats as H.264 and VC-1.
The 4XM file extension is used on files that transport video data that have been compressed with the 4XM video codec, developed by 4X Technologies. Besides the video data, it can also transport audio data and multiple audio language tracks. The 4XM technology is often used in computer and console games.
The 3rd Generation Partnership Project (3GPP) is a project that is developed to enable the delivery and playback of multimedia files over a high-speed, wireless network. The 3GPP is a multimedia file that is based on the MPEG-4 standard that has been derived from Apple’s QuickTime. The 3GPP project seeks to provide the amsses with the delivery of multimedia files to the latest wireless devices such as mobile phones.
The M1V extension belongs to a MPEG-1 Video file that is created by the Moving Pictures Experts Group video.
WMV stands for Windows Media File. It is a file format / video codec created by Microsoft to play audio / video files on Windows. To play this file on a Window you require Windows Media Player ( version 8+ ) or another video player that supports WMV. In contrary to popular formats like AVI and MPEG the controversial DRM can be applied to WMV.
The AVCHD file format, short for Advanced Video Coding High Definition, is a high-definition video file that is a file-based format for digital recording and the playback of HD video. The AVCHD format was introduced in 2006 by Sony and Panasonic for the use in HD camcorders and is a consumer alternative to the HDV format. However, the playback of the AVCHD format is not supported by all Blu-ray players since it is not part of the Blu-ray disc specification.
MPEG-4 is an ISO/IEC standard developed by MPEG (Moving Picture Experts Group), the committee that also developed the Emmy Award winning standards known as MPEG-1 and MPEG-2. These standards made interactive video on CD-ROM, DVD and Digital Television possible. MPEG-4 is the result of another international effort involving hundreds of researchers and engineers from all over the world. MPEG-4, with formal as its ISO/IEC designation ‘ISO/IEC 14496’, was finalized in October 1998 and became an International Standard in the first months of 1999. The fully backward compatible extensions under the title of MPEG-4 Version 2 were frozen at the end of 1999, to acquire the formal International Standard Status early in 2000.