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| Extension | File Type Developer | File Category | File Type Description | Software | Software Developer |
|---|---|---|---|---|---|
| .AAC | Xilisoft Corporation | Audio Files | Advanced Audio Coding File | Media Player Classic | Open Source |
| .DSL | ABBYY | Data Files | Lingvo Dictionary Data File | Media Player Classic | Open Source |
| .DSM | Open Source | Audio Files | Digital Sound Module | Media Player Classic | Open Source |
| .FLV | Adobe Systems Incorporated | Video Files | Animate Video File | Media Player Classic | Open Source |
| .HDMOV | Apple | Video Files | QuickTime HD Movie File | Media Player Classic | Open Source |
| .LRV | Konica Minolta | Data Files | Konica Minolta Data Management Software Stored File | Media Player Classic | Open Source |
| .M1A | Open Source | Audio Files | MPEG-1 Audio File | Media Player Classic | Open Source |
| .M2A | Unknown Developer | Video Files | MPEG-1 Layer 2 Audio File | Media Player Classic | Open Source |
| .M2P | Moving Picture Experts Group | Video Files | MPEG-2 Program Stream File | Media Player Classic | Open Source |
| .M3U | Nullsoft | Audio Files | Media Playlist File | Media Player Classic | Open Source |
| .M4A | Apple | Audio Files | MPEG-4 Audio File | Media Player Classic | Open Source |
| .M4V | Apple | Video Files | iTunes Video File | Media Player Classic | Open Source |
| .MAD | Electronic Arts | Game Files | Electronic Arts Madcow Movie File | Media Player Classic | Open Source |
| .MKA | Matroska | Audio Files | Matroska Audio File | Media Player Classic | Open Source |
| .MKV | Various Developers | Video Files | Matroska Video File | Media Player Classic | Open Source |
| .MMV | Sony | Video Files | MicroMV Video File | Media Player Classic | Open Source |
| .MO3 | Un4seen Developments | Audio Files | MO3 Audio File | Media Player Classic | Open Source |
| .MP2V | Roxio | Video Files | MPEG-2 Video File | Media Player Classic | Open Source |
| .MP4 | Moving Picture Experts Group | Video Files | MPEG-4 Video File | Media Player Classic | Open Source |
| .MP4V | Moving Picture Experts Group | Video Files | MPEG-4 Video File | Media Player Classic | Open Source |
| .MPCPL | Open Source | Uncommon Files | Media Player Classic Playlist | Media Player Classic | Open Source |
| .MPG4 | Moving Picture Experts Group | Video Files | MPEG-4 Video File | Media Player Classic | Open Source |
| .MPL | Sony | Video Files | AVCHD Playlist File | Media Player Classic | Open Source |
| .RBS | Microsoft Corporation | Backup Files | Windows Installer Rollback Script File | Media Player Classic | Open Source |
| .RMM | RealNetworks | Audio Files | RAM Meta File | Media Player Classic | Open Source |
| .ROQ | id Software | Video Files | Id Software Game Video | Media Player Classic | Open Source |
| .RV | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data | Media Player Classic | Open Source |
| .SCM | Gimpel Software | Plugin Files | GIMP Script-Fu Script | Media Player Classic | Open Source |
| .SFD | Open Source | Video Files | Sofdec Dreamcast Movie | Media Player Classic | Open Source |
| .SWF | Adobe Systems Incorporated | Video Files | Shockwave Flash Movie | Media Player Classic | Open Source |
| .TPR | Pegasys | Video Files | TMPGEnc Project File | Media Player Classic | Open Source |
| .TTS | SumTotal Systems | Data Files | ToolBook Translation System File | Media Player Classic | Open Source |
| .VOB | The DVD Forum | Video Files | DVD Video Object File | Media Player Classic | Open Source |
| .WV | David Bryant | Audio Files | WavPack Audio File | Media Player Classic | Open Source |
| .XVID | DivX, LLC. | Video Files | Xvid-Encoded Video File | Media Player Classic | Open Source |
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