| .3G2 | Open Source | Arquivos de vídeo | 3GPP2 Multimedia File | Apple QuickTime Player | Apple |
| .3GA | Open Source | Arquivos de áudio | 3GPP Audio File | Apple QuickTime Player | Apple |
| .3GP | Various Developers | Arquivos de vídeo | 3GPP Media File | Apple QuickTime Player | Apple |
| .3GPA | Open Source | Arquivos de áudio | 3GPP Multimedia File | Apple QuickTime Player | Apple |
| .3GPP | Various Developers | Arquivos de vídeo | 3GPP Media File | Apple QuickTime Player | Apple |
| .3GPP2 | Apple | Arquivos de vídeo | Multimedia Files For Wireless Networks | Apple QuickTime Player | Apple |
| .3P2 | Open Source | Arquivos de áudio | 3GPP Multimedia File | Apple QuickTime Player | Apple |
| .AC3 | Various Developers | Arquivos de áudio | Audio Codec 3 File | Apple QuickTime Player | Apple |
| .AIF | Apple | Arquivos de áudio | Audio Interchange File Format | Apple QuickTime Player | Apple |
| .AIFC | Apple | Arquivos de áudio | Compressed Audio Interchange File | Apple QuickTime Player | Apple |
| .AIFF | Apple | Arquivos de áudio | Audio Interchange File Format | Apple QuickTime Player | Apple |
| .AL | ITU-T (International Telecommunication Union, Telecommunication Standardization Sector) | Arquivos de áudio | A-Law Compressed Sound Format | Apple QuickTime Player | Apple |
| .ALAW | ITU-T (International Telecommunication Union, Telecommunication Standardization Sector) | Arquivos de áudio | A-Law Compressed Sound Format | Apple QuickTime Player | Apple |
| .AMC | Pegasys | Arquivos de vídeo | AMC Video File | Apple QuickTime Player | Apple |
| .AMR | Open Source | Arquivos de áudio | Adaptive Multi-Rate Codec File | Apple QuickTime Player | Apple |
| .AU | Open Source | Arquivos de áudio | Audacity Audio File | Apple QuickTime Player | Apple |
| .AVI | Microsoft Corporation | Arquivos de vídeo | Audio Video Interleave File | Apple QuickTime Player | Apple |
| .AWB | Nokia | Arquivos de áudio | AMR-WB Audio File | Apple QuickTime Player | Apple |
| .AX | Open Source | Arquivos de complementos | DirectShow Filter | Apple QuickTime Player | Apple |
| .BUB | Apple | Arquivos miscelâneas | Photobubble File | Apple QuickTime Player | Apple |
| .CAF | Apple | Arquivos de áudio | Apple Core Audio File | Apple QuickTime Player | Apple |
| .CAFF | Apple | Arquivos de áudio | Core Audio File | Apple QuickTime Player | Apple |
| .CEL | Affymetrix | Arquivos de dados | Affymetrix Probe Results File | Apple QuickTime Player | Apple |
| .DIF | Microsoft Corporation | Arquivos de dados | Data Interchange Format | Apple QuickTime Player | Apple |
| .DNP | Apple | Arquivos de configuração | DRM Digital Rights Management Data | Apple QuickTime Player | Apple |
| .DV | Roxio | Arquivos de vídeo | Digital Video File | Apple QuickTime Player | Apple |
| .DVX | DivX, LLC. | Arquivos de vídeo | DivX Video File | Apple QuickTime Player | Apple |
| .FLC | Autodesk, Inc. | Arquivos de vídeo | FLIC Animation | Apple QuickTime Player | Apple |
| .FLH | Apple | Arquivos de vídeo | FLIC Animation File | Apple QuickTime Player | Apple |
| .FLI | Autodesk, Inc. | Arquivos de vídeo | FLIC Animation | Apple QuickTime Player | Apple |
| .FLV | Adobe Systems Incorporated | Arquivos de vídeo | Animate Video File | Apple QuickTime Player | Apple |
| .FLX | Autodesk, Inc. | Arquivos de vídeo | FLIC Animation | Apple QuickTime Player | Apple |
| .GPD | Microsoft Corporation | Arquivos de Texto | Generic Printer Description File | Apple QuickTime Player | Apple |
| .H264 | Ulead Systems | Arquivos de vídeo | H.264 Encoded Video File | Apple QuickTime Player | Apple |
| .HDMOV | Apple | Arquivos de vídeo | QuickTime HD Movie File | Apple QuickTime Player | Apple |
| .IFF | Electronic Arts | Arquivos de áudio | Interchange File Format | Apple QuickTime Player | Apple |
| .IFV | Intel Corporation | Arquivos de vídeo | Indeo Video Format File | Apple QuickTime Player | Apple |
| .IPS | ZeroSoft Zophar | Arquivos de jogos | Internal Patching System Patch File | Apple QuickTime Player | Apple |
| .IVF | Intel Corporation | Arquivos de vídeo | Indeo Video Format File | Apple QuickTime Player | Apple |
| .IVS | Thomas d'Otreppe de Bouvette | Arquivos de dados | Initialization Vector File | Apple QuickTime Player | Apple |
| .J2K | Joint Photographic Experts Group | Arquivos de imagem Raster | JPEG 2000 Image | Apple QuickTime Player | Apple |
| .JPF | Joint Photographic Experts Group | Arquivos de imagem Raster | JPEG 2000 Image | Apple QuickTime Player | Apple |
| .JPG2 | Joint Photographic Experts Group | Arquivos de imagem Raster | JPEG 2000 Image | Apple QuickTime Player | Apple |
| .JPX | Embarcadero Technologies | Arquivos de desenvolvedor | JBuilder Project | Apple QuickTime Player | Apple |
| .LRV | Konica Minolta | Arquivos de dados | Konica Minolta Data Management Software Stored File | Apple QuickTime Player | Apple |
| .M15 | Moving Picture Experts Group | Arquivos de vídeo | MPEG Video File | Apple QuickTime Player | Apple |
| .M1A | Open Source | Arquivos de áudio | MPEG-1 Audio File | Apple QuickTime Player | Apple |
| .M1V | Roxio | Arquivos de vídeo | MPEG-1 Video File | Apple QuickTime Player | Apple |
| .M21 | AXMEDIS Products and Services | Arquivos de vídeo | AXMEDIS MPEG-21 File | Apple QuickTime Player | Apple |
| .M2A | Unknown Developer | Arquivos de vídeo | MPEG-1 Layer 2 Audio File | Apple QuickTime Player | Apple |
| .M2S | Maxthon | Arquivos de configuração | Maxthon 2 Browser Skin File | Apple QuickTime Player | Apple |
| .M2V | Webteh | Arquivos de vídeo | MPEG-2 Packetized Elementary Stream | Apple QuickTime Player | Apple |
| .M4A | Apple | Arquivos de áudio | MPEG-4 Audio File | Apple QuickTime Player | Apple |
| .M4P | Apple | Arquivos de áudio | iTunes Music Store Audio File | Apple QuickTime Player | Apple |
| .M4U | Open Source | Arquivos de vídeo | MPEG-4 Playlist | Apple QuickTime Player | Apple |
| .M4V | Apple | Arquivos de vídeo | iTunes Video File | Apple QuickTime Player | Apple |
| .M75 | Moving Picture Experts Group | Arquivos de vídeo | MPEG Video File | Apple QuickTime Player | Apple |
| .MAC | Apple | Arquivos de imagem Raster | MacPaint Image | Apple QuickTime Player | Apple |
| .MID | Open Source | Arquivos de áudio | MIDI Audio File | Apple QuickTime Player | Apple |
| .MIDI | Synthesia LLC | Arquivos de áudio | MIDI File | Apple QuickTime Player | Apple |
| .MJP | LG Electronics | Arquivos de vídeo | MJPEG Video File | Apple QuickTime Player | Apple |
| .MOO | Apple | Arquivos de vídeo | Apple QuickTime Movie Clip File | Apple QuickTime Player | Apple |
| .MOOV | Apple | Arquivos de vídeo | Apple QuickTime Movie | Apple QuickTime Player | Apple |
| .MOV | Apple | Arquivos de vídeo | Apple QuickTime Movie | Apple QuickTime Player | Apple |
| .MOVIE | Apple | Arquivos de vídeo | QuickTime Movie File | Apple QuickTime Player | Apple |
| .MP21 | AXMEDIS Products and Services | Arquivos de vídeo | AXMEDIS MPEG-21 Object | Apple QuickTime Player | Apple |
| .MP2V | Roxio | Arquivos de vídeo | MPEG-2 Video File | Apple QuickTime Player | Apple |
| .MP4 | Moving Picture Experts Group | Arquivos de vídeo | MPEG-4 Video File | Apple QuickTime Player | Apple |
| .MP4V | Moving Picture Experts Group | Arquivos de vídeo | MPEG-4 Video File | Apple QuickTime Player | Apple |
| .MPA | Unknown Developer | Arquivos de áudio | MPEG-2 Audio File | Apple QuickTime Player | Apple |
| .MPE | Unknown Developer | Arquivos de vídeo | MPEG Movie | Apple QuickTime Player | Apple |
| .MPEG | Unknown Developer | Arquivos de vídeo | MPEG Movie | Apple QuickTime Player | Apple |
| .MPG | Moving Picture Experts Group | Arquivos de vídeo | MPEG Video File | Apple QuickTime Player | Apple |
| .MPG4 | Moving Picture Experts Group | Arquivos de vídeo | MPEG-4 Video File | Apple QuickTime Player | Apple |
| .MPV2 | Roxio | Arquivos de vídeo | MPEG-2 Video Stream | Apple QuickTime Player | Apple |
| .MQV | Sony | Arquivos de vídeo | Sony Movie Format File | Apple QuickTime Player | Apple |
| .MXF | SMPTE | Arquivos de vídeo | Material Exchange Format File | Apple QuickTime Player | Apple |
| .OGX | Xiph.Org | Arquivos de vídeo | Ogg Vorbis Multiplexed Media File | Apple QuickTime Player | Apple |
| .PANO | Microsoft Corporation | Arquivos de imagem Raster | Camera Panoramic Picture | Apple QuickTime Player | Apple |
| .PIC | John Bridges | Arquivos de imagem Raster | Generic Picture File | Apple QuickTime Player | Apple |
| .PIQT | Apple | Arquivos de dados | Apple QuickTime Still File | Apple QuickTime Player | Apple |
| .PLUGIN | Adobe Systems Incorporated | Arquivos de complementos | Adobe Photoshop Plugin | Apple QuickTime Player | Apple |
| .QDAT | Apple | Arquivos de dados | QuickTime Install Cache File | Apple QuickTime Player | Apple |
| .QIF | Intuit, Inc. | Arquivos de dados | Quicken Interchange Format File | Apple QuickTime Player | Apple |
| .QPX | Microsoft Corporation | Arquivos executáveis | FoxPro Compiled Query Program | Apple QuickTime Player | Apple |
| .QT | Apple | Arquivos de vídeo | Apple QuickTime Movie | Apple QuickTime Player | Apple |
| .QTC | Apple | Arquivos de vídeo | Apple QuickTime Support File | Apple QuickTime Player | Apple |
| .QTCH | Apple | Arquivos de vídeo | QuickTime Cache File | Apple QuickTime Player | Apple |
| .QTI | Apple | Arquivos de imagem Raster | QuickTime Image File | Apple QuickTime Player | Apple |
| .QTIF | Apple | Arquivos de imagem Raster | QuickTime Image File | Apple QuickTime Player | Apple |
| .QTL | Apple | Arquivos de vídeo | QuickTime Link File | Apple QuickTime Player | Apple |
| .QTM | Apple | Arquivos de vídeo | Apple QuickTime Movie | Apple QuickTime Player | Apple |
| .QTP | Apple | Arquivos de configuração | QuickTime Preferences File | Apple QuickTime Player | Apple |
| .QTR | Apple | Arquivos de complementos | QuickTime Extension Resource | Apple QuickTime Player | Apple |
| .QTS | Apple | Arquivos de sistema | QuickTime System File | Apple QuickTime Player | Apple |
| .QTV | Apple | Arquivos de dados | QuickTime Virtual Reality File | Apple QuickTime Player | Apple |
| .QTX | Apple | Arquivos de complementos | QuickTime Extension File | Apple QuickTime Player | Apple |
| .QTZ | Apple | Arquivos de vídeo | Quartz Composer File | Apple QuickTime Player | Apple |
| .RGB | Silicon Graphics, Inc. | Arquivos de imagem Raster | RGB Bitmap | Apple QuickTime Player | Apple |
| .RMI | Open Source | Arquivos de áudio | RMID MIDI File | Apple QuickTime Player | Apple |
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