| Name | MP4 | AVI |
| Full name | MP4 - MPEG-4 Part 14 | AVI - Microsoft Audio/Visual Interleaved |
| File extension | .mp4, .m4a, .m4p, .m4b, .m4r, .m4v | .avi |
| MIME type | video/mp4 | video/vnd.avi, video/avi, video/msvideo, video/x-msvideo |
| Developed by | International Organization for Standardization | Microsoft |
| Type of format | Media container | video file format |
| Description | MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio and store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. | Audio Video Interleaved (also Audio Video Interleave), known by its initials AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows software. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. |
| 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. | AVI is a derivative of the Resource Interchange File Format (RIFF), which divides a file's data into blocks, or 'chunks.' A FourCC tag identifies each 'chunk'. An AVI file takes the form of a single chunk in a RIFF formatted file, which is then subdivided into two mandatory 'chunks' and one optional 'chunk'. |
| File conversion | MP4 conversion | AVI conversion |
| Associated programs | Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player | Windows Media Player, Windows Movie Maker, Avidemux, AviSynth, Adobe After Effects, Media Player Classic, VLC. |
| Wiki | https://en.wikipedia.org/wiki/MPEG-4_Part_14 | https://en.wikipedia.org/wiki/Audio_Video_Interleave |
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- Download Free MP4 to AVI Converter for Windows to convert MP4, M4V, MP4V files to AVI or MPEG. Free MP4 to AVI Converter has had 0 updates within the past 6 months.
- Click on the green Add File (s) button, located in the main toolbar to open the file finder window. Find and select the MP4 files on your computer and click Open to bring them into Prism to convert them to the AVI file format. You can also drag and drop your MP4 files directly into the program to convert them as well. Choose an Output Folder.
- Any Video Converter Free Mac is the best free video converter to convert any video to MP4, AVI, WMV, MP3, and edit video on macOS for free.
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We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon). Our MP4 to AVI Converter is free and works on any web browser. We guarantee file security and privacy.