AVI vs MOV: Which Video Container Format Is Better?
Published on April 13, 2026
AVI (Audio Video Interleave) is Microsoft's video container format from 1992. MOV is Apple's QuickTime container format. Both are older containers that have largely been replaced by MP4 for general use. AVI works better on Windows, MOV works better on macOS, and neither is ideal for web sharing or streaming.
Container Structure
AVI uses a simple RIFF-based structure that interleaves audio and video chunks sequentially. This makes it easy to parse but limits what it can store. MOV uses Apple's QuickTime container, which supports multiple tracks, chapters, timecodes, and metadata in a more flexible atom-based structure. MOV can hold virtually any codec combination, while AVI has some codec restrictions and poor subtitle support.
Codec Support
AVI files commonly contain DivX, Xvid, or uncompressed video with MP3 or PCM audio. MOV files typically use H.264, ProRes, or HEVC video with AAC audio. MOV supports modern codecs more naturally since Apple kept updating the QuickTime specification. AVI with H.264 exists but is uncommon and can cause playback issues in some players.
Compatibility
AVI plays natively on Windows but needs QuickTime or a third-party player on macOS. MOV plays natively on macOS and iOS but requires additional codecs on many Windows systems. Neither format plays reliably in web browsers. For cross-platform sharing, MP4 beats both formats because every device and browser supports it without extra software.
File Size
File size depends entirely on the codec, not the container. An AVI with DivX and a MOV with H.264 at the same resolution will differ because the codecs are different, not because the containers are different. That said, MOV files from iPhones and cameras tend to use efficient modern codecs, while AVI files tend to come from older sources using less efficient compression. Uncompressed AVI files from screen recorders can be extremely large.
When to Use Each
Use MOV if you are editing in Final Cut Pro or working in an Apple-based workflow. MOV with ProRes is a professional editing standard. Use AVI only if your software specifically requires it, which is rare today. For everything else, convert to MP4 for universal compatibility and smaller files.
Convert AVI or MOV to MP4 with our video to MP4 converter. To reduce file sizes, use our video compressor. See also AVI vs MP4, MOV vs AVI, and MKV vs AVI.