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| Name | MP4 | FLV |
| Full name | MP4 - MPEG-4 Part 14 | FLV - Flash Video |
| File extension | .mp4, .m4a, .m4p, .m4b, .m4r, .m4v | .flv, .f4v, .f4p, .f4a, .f4b |
| MIME type | video/mp4 | video/x-flv |
| Developed by | International Organization for Standardization | Adobe Systems |
| Type of format | Media container | Media container |
| 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. | Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player version 6 and newer. Flash Video content may also be embedded within SWF files. Flash Video used to be the de facto standard for web-based streaming video. Notable users of it include Hulu, VEVO, Yahoo! Video, metacafe, Reuters.com, and many other news providers. |
| 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). | There are two different video file formats known as Flash Video: FLV and F4V. The audio and video data within FLV files are encoded in the same manner as they are within SWF files. The F4V file format is based on the ISO base media file format and is starting with Flash Player 9 update 3. Both formats are supported in Adobe Flash Player and developed by Adobe Systems. |
| Associated programs | Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player | Adobe Flash Player |
| Wiki | https://en.wikipedia.org/wiki/MPEG-4_Part_14 | https://en.wikipedia.org/wiki/Flash_Video |