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| Extension | File Type Developer | File Category | File Type Description | Primary Software | Primary Software Developer |
|---|---|---|---|---|---|
| .H264 | Ulead Systems | Video Files | H.264 Encoded Video File | CyberLink PowerDVD | CyberLink |
| .H3R | Panasonic Corporation | Video Files | Panasonic Video Camera File | Security Panasonic Cameras | Panasonic Corporation |
| .H64 | VideoLAN | Video Files | Audioless H.264 Video File | VLC Media Player | VideoLAN |
| .HDMOV | Apple | Video Files | QuickTime HD Movie File | Microsoft Windows Media Player | Microsoft Corporation |
| .HDV | JVCKenwood Group | Video Files | High Definition Video Format | MAGIX Vegas | Magix Software GmbH |
| .HEVC | Moving Picture Experts Group | Video Files | High Efficiency Video Coding File | VLC Media Player | VideoLAN |
| .HKV | EazzyDV Electric Ltd. | Video Files | Eyesight IP Camera Video | SYSM Monitor | EazzyDV Electric Ltd. |
| .HLS | EA Maxis | Video Files | SimCity 4 Hitlist | Electronic Arts SimCity 4 | Electronic Arts |
| .HLV | Unknown Developer | Video Files | Multimedia File | QQ Player | Tencent Holdings Limited |
| .HNM | Cryo Interactive Entertainment | Video Files | Cryo HNM Movie Soundtrack | Unknown Software | Unknown Developer |
| .HSR | HS-Soft | Video Files | RezeptAssist Exported Data | RezeptAssist | HS-Soft |
| .HUP | Haihaisoft | Video Files | Haihaisoft DRM-X Protected Video | DRM-X | Haihaisoft |
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