| .QTL | Apple | Video soubory | QuickTime Link File | Apple QuickTime Player | Apple |
| .QTM | Apple | Video soubory | Apple QuickTime Movie | CyberLink PowerDVD | CyberLink |
| .QTZ | Apple | Video soubory | Quartz Composer File | Apple QuickTime Player | Apple |
| .QVT | Qlik | Video soubory | QlikView Theme File | QlikTech International QlikView | Qlik |
| .R3D | Various Developers | Video soubory | REDCODE Video File | Adobe Premiere Pro CC | Adobe Systems Incorporated |
| .RCD | Symantec Corporation | Video soubory | PcAnywhere Recorded Session File | pcAnywhere | Symantec Corporation |
| .RCPROJECT | Apple | Video soubory | iMovie '08 Project | Apple Final Cut Pro | Apple |
| .RCX | The LEGO Group | Video soubory | Lego Mindstorms Data | LEGO MINDSTORMS NXT | The LEGO Group |
| .RDB | EMC | Video soubory | Retrospect Backup Set | Retrospect | Retrospect Inc. |
| .RDG | Microsoft Corporation | Video soubory | Microsoft Remote Desktop Connection Manager Configuration | Microsoft Remote Desktop Connection | Microsoft Corporation |
| .REC | TOPFIELD Co., Ltd. | Video soubory | Topfield PVR Recording | Squared 5 MPEG Streamclip | Open Source |
| .RM | RealNetworks | Video soubory | RealMedia File | VLC Media Player | VideoLAN |
| .RMD | Thomson Reuters Corporation | Video soubory | Reference Manager Data File | Reference Manager | Thomson Reuters Corporation |
| .RMP | RealNetworks | Video soubory | RealPlayer Metadata Package File | Apple iTunes | Apple |
| .RMS | RealNetworks | Video soubory | Secure Real Media File | RealNetworks RealTimes | RealNetworks |
| .RMVB | RealNetworks | Video soubory | RealMedia Variable Bit Rate File | RealNetworks RealTimes | RealNetworks |
| .ROQ | id Software | Video soubory | Id Software Game Video | Media Player Classic | Open Source |
| .RP | Axure | Video soubory | Axure RP Project File | Axure RP | Axure |
| .RSX | Red Digital Cinema Camera Company | Video soubory | Temporary Red Alert Camera Data | REDCINE-X | Red Digital Cinema Camera Company |
| .RTS | Heaventools Software | Video soubory | Resource Tuner Console Script | Resource Tuner Console | Heaventools Software |
| .RTV | NewTek | Video soubory | NewTek Uncompressed Video Data | Unknown Software | Unknown Developer |
| .RV | Astronomical Institute of the Czech Academyof Sciences | Video soubory | SPEFO Stellar Spectra Analysis Data | SPEFO | Astronomical Institute of the Czech Academyof Sciences |
| .RVL | muvee | Video soubory | Muvee Reveal X Project File | muvee Reveal X | muvee |
| .S11 | Interplay Entertainment | Video soubory | Descent 2 Game Data | Interplay Descent 2 | Interplay Entertainment |
| .S4UD | Samsung Electronics | Video soubory | Samsung Smart TV Video | Samsung TVs | Samsung Electronics |
| .SAN | LucasArts Entertainment Company, LLC | Video soubory | Smush Animation File | Star Wars: Rebel Assault | LucasArts Entertainment Company, LLC |
| .SBK | SwishZone | Video soubory | SWiSH Project Backup File | SWiSH Max | SwishZone |
| .SBS | Allegorithmic | Video soubory | Substance Package | Substance Designer | Allegorithmic |
| .SBT | URUWORKS | Video soubory | SBT Subtitle File | URUWorks Subtitle Workshop | URUWORKS |
| .SBZ | ArcSoft | Video soubory | ShowBiz Project File | ArcSoft ShowBiz | ArcSoft |
| .SCC | Microsoft Corporation | Video soubory | SourceSafe Source Code Control File | Microsoft Visual Studio | Microsoft Corporation |
| .SCM | Gimpel Software | Video soubory | GIMP Script-Fu Script | GIMP | The GIMP Development Team |
| .SCN | Microsoft Corporation | Video soubory | Age Of Mythology Scenario File | Microsoft Age of Empires | Ensemble Studios |
| .SCX | RIX SoftWorks, Inc. | Video soubory | ColoRIX Bitmap Graphic File | XnView MP | XnSoft |
| .SDP | Oracle Corporation | Video soubory | StarOffice Presentation File | Apache OpenOffice | Apache Software Foundation |
| .SDV | Pinnacle Systems Inc. | Video soubory | Studio DV Project File | Pinnacle Studio | Corel |
| .SEC | Symantec Corporation | Video soubory | Pretty Good Privacy Secret Key Ring | Pretty Good Privacy (PGP) | Symantec Corporation |
| .SEQ | PG Music Inc | Video soubory | PowerTracks Pro Audio Project File | PowerTracks Pro Audio | PG Music Inc |
| .SFD | Open Source | Video soubory | Sofdec Dreamcast Movie | Media Player Classic | Open Source |
| .SHTM | Opera Software | Video soubory | HTML Server Side Include File | Microsoft Notepad | Microsoft Corporation |
| .SIV | Adobe Systems Incorporated | Video soubory | Silicon Imaging Video File | Adobe SpeedGrade | Adobe Systems Incorporated |
| .SKY | Palm | Video soubory | ActiveSky Movie Clips For Palm OS | Palm OS | Palm |
| .SMI | Apple | Video soubory | Self-Mounting Disk Image | ShrinkWrap | Aladdin Systems |
| .SMIL | "Synchronized Multimedia" Working Group (SYMM WG) | Video soubory | SMIL(Synchronized Multimedia Integration Language) Presentation File | Internet Explorer | Microsoft Corporation |
| .SMK | RAD Game Tools | Video soubory | Smacker Compressed Movie File | RAD Video Tools | RAD Game Tools |
| .SML | ESRI | Video soubory | ARC/INFO Simple Macro Language File | ESRI ArcGIS for Desktop | ESRI (Environmental Systems Research Institute) |
| .SMV | Smith Micro Software | Video soubory | VideoLink Mail Video File | Smith Micro Videolink Pro | Smith Micro Software |
| .SPL | Microsoft Corporation | Video soubory | Windows Print Spool File | Microsoft Windows | Microsoft Corporation |
| .SQZ | Sorenson Media | Video soubory | Squeeze Project File | Squeeze | Sorenson Media |
| .SRT | SourceForge | Video soubory | SubRip Subtitle File | VLC Media Player | VideoLAN |
| .SSF | Unknown Developer | Video soubory | Structured Subtitle Format File | Microsoft Notepad | Microsoft Corporation |
| .SSIF | CyberLink | Video soubory | Blu-ray Disk | CyberLink PowerDVD | CyberLink |
| .SSM | RealNetworks | Video soubory | Standard Streaming Metafile | RealPlayer | Realtime Technologies |
| .SSW | Sony Mobile Communications | Video soubory | Sony Ericsson Firmware File | SETool2 | Sony Mobile Communications |
| .ST4 | Corel Corporation | Video soubory | Pinnacle Studio 400 Project File | Pinnacle Studio | Corel |
| .STL | 3D Systems | Video soubory | Stereolithography File | Creo Parametric 3D Modeling Software | PTC |
| .STR | dBase, LLC | Video soubory | dBASE Structure List Object File | dBase | dBase, LLC |
| .SVI | Samsung Electronics | Video soubory | Samsung Video File | GOM Player | GOM & Company |
| .SWF | Adobe Systems Incorporated | Video soubory | Shockwave Flash Movie | Adobe Animate CC 2017 | Adobe Systems Incorporated |
| .SWI | SwishZone | Video soubory | SWiSH Project File | SWiSH Max | SwishZone |
| .SWT | Adobe Systems Incorporated | Video soubory | Flash Generator Template | Adobe Flash Professional CC | Adobe Systems Incorporated |
| .TDT | Sony | Video soubory | AVCHD Thumbnail File | Unknown Software | Unknown Developer |
| .TDX | D-TEG Security Co. | Video soubory | D-TEG CCTV Video Information File | D-TEG MRX PC Client | D-TEG Security Co. |
| .TGV | Electronic Arts | Video soubory | Electronic Arts Video File | Need For Speed | Electronic Arts |
| .THP | thakis | Video soubory | Wii/GameCube Video File | thpplay | thakis |
| .TID | Sony | Video soubory | AVCHD Thumbnail File | Unknown Software | Unknown Developer |
| .TIVO | TiVo Corporation | Video soubory | TiVo Video File | CyberLink PowerDVD | CyberLink |
| .TIX | DivX, LLC. | Video soubory | DivX Video Download Activation File | DivX | DivX, LLC. |
| .TMI | Thin Multimedia | Video soubory | Thin Client Media-3 Encoded Video | thinMobile CDN | Thin Multimedia |
| .TMS | Telemate | Video soubory | Telemate Script | Telemate | Telemate |
| .TOD | JVCKenwood Group | Video soubory | JVC Everio Video Capture File | VLC Media Player | VideoLAN |
| .TP | SnapStream Media | Video soubory | Beyond TV Transport Stream File | CyberLink PowerDVD | CyberLink |
| .TPR | Pegasys | Video soubory | TMPGEnc Project File | Media Player Classic | Open Source |
| .TREC | TechSmith | Video soubory | TechSmith Recording File | TechSmith Camtasia Studio | TechSmith |
| .TRP | VSO Software | Video soubory | MPEG-2 HD Video Transport Stream | CyberLink PowerDVD | CyberLink |
| .TS | Various Developers | Video soubory | Video Transport Stream File | Squared 5 MPEG Streamclip | Open Source |
| .TSCPROJ | TechSmith | Video soubory | Camtasia Studio Project | TechSmith Camtasia Studio | TechSmith |
| .TSP | Inmatrix Media Solutions | Video soubory | Digital TV DVR Recording | Zoom Player | Inmatrix Media Solutions |
| .TTS | SumTotal Systems | Video soubory | ToolBook Translation System File | ToolBook | SumTotal Systems |
| .TV | Corel | Video soubory | Corel Paradox Table View Settings | Corel Paradox | Corel |
| .TVS | TeamViewer | Video soubory | TeamViewer Video Session File | TeamViewer | TeamViewer |
| .UB1 | Unknown Developer | Video soubory | X-Driven DRS-1100 Recorded Video | Unknown Software | Unknown Developer |
| .UM4 | Samsung Electronics | Video soubory | Samsung Smart TV Video | Samsung TVs | Samsung Electronics |
| .USF | EVGA Corporation | Video soubory | EVGA Precision X Skin File | EVGA PrecisionX | EVGA Corporation |
| .UV | EA Sports | Video soubory | EA Games Video File | Electronic Arts The Sims 2 | Electronic Arts |
| .VAF | Microsoft Corporation | Video soubory | Microsoft Visual Studio Common Tools Analyzer Server Project Item File | Microsoft Visual Studio | Microsoft Corporation |
| .VBC | Netralia Pty Ltd | Video soubory | VodBurner Crude Video File | VodBurner | Netralia Pty Ltd |
| .VCR | Advanced Micro Devices, Inc. | Video soubory | ATI Video Card Recording | ATI Multimedia Center | Advanced Micro Devices, Inc. |
| .VDM | Overture Tool | Video soubory | VDM Specification File | VDM Tools | Overture Tool |
| .VDO | Unknown Developer | Video soubory | Heathen Virus File | Unknown Software | Unknown Developer |
| .VDR | Avery Dennison | Video soubory | VirtualDub Signpost File | VirtualDub | Open Source |
| .VDX | Microsoft Corporation | Video soubory | Visio Drawing XML File | OmniGraffle | The Omni Group |
| .VEG | Magix Software GmbH | Video soubory | VEGAS Video Project | MAGIX Vegas | Magix Software GmbH |
| .VEM | Meta Media | Video soubory | Meta Media Video E-Mail File | Meta Media Video Player | Meta Media |
| .VEP | Online Media Technologies Ltd. | Video soubory | AVS Video Editor Project File | AVS Video Editor | Online Media Technologies Ltd. |
| .VF | Magix Software GmbH | Video soubory | Vegas Movie Studio Project | MAGIX Vegas | Magix Software GmbH |
| .VFO | Silicon Graphics, Inc. | Video soubory | Silicon Graphics Onyx2 Video Format Combiner File | Video Format Combiner | Silicon Graphics, Inc. |
| .VFT | Corel | Video soubory | Corel VideoStudio Filter File | Corel VideoStudio Pro | Corel |
| .VFW | Open Source | Video soubory | Video For Windows | Microsoft Windows Media Player | Microsoft Corporation |
| .VFZ | Creative Technology Ltd. | Video soubory | Creative Webcam Video Effects File | Creative Webcam | Creative Technology Ltd. |
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