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| Name | MP4 | OGV |
| Full name | MP4 - MPEG-4 Part 14 | OGV - Ogg Video |
| File extension | .mp4, .m4a, .m4p, .m4b, .m4r, .m4v | .ogv |
| MIME type | video/mp4 | video/ogg |
| Developed by | International Organization for Standardization | Xiph.org |
| Type of format | Media container | Compressed video |
| Description | MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. | OGV file is video file that uses the Xiph.Org's open source Ogg container format; may contain video streams that use one or more different codecs, such as Theora. Theora is a free lossy video compression format. It is distributed without licensing fees. |
| Technical details | Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org). | The Theora video-compression format is essentially compatible with the VP3 video-compression format, consisting of a backward-compatible superset. Theora is a superset of VP3, and VP3 streams can be converted into Theora streams without recompression. |
| Associated programs | Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player | FFmpeg, MPlayer, VLC |
| Wiki | https://en.wikipedia.org/wiki/MPEG-4_Part_14 | https://en.wikipedia.org/wiki/Theora |