MOV vs MP4: what is the difference?
MOV and MP4 are containers, not just file extensions. This guide explains why that matters for sharing.
Containers versus codecs
MOV and MP4 describe how media streams are packaged. The actual video may use codecs such as H.264, HEVC, or another format. A device can understand the container but still fail to play the codec inside it.
Compatibility differences
MP4 is usually the safer format for web forms, learning platforms, email attachments, and Android or Windows recipients. MOV is common in Apple workflows and can carry high-quality camera metadata, but some upload forms reject it.
| Format | Common use | Sharing note |
|---|---|---|
| MOV | iPhone, QuickTime, Mac camera workflows | Useful source format, but less accepted by some upload forms |
| MP4 | Web, email, LMS, social platforms | Usually the most compatible sharing format |
When conversion re-encodes
If the browser and FFmpeg can copy compatible streams, conversion may be mostly repackaging. If the original codec is not suitable for broad MP4 playback, the tool may re-encode to H.264/AAC, which can change file size and quality.