What happens when you convert MOV to WebM
| Inside a typical MOV | H.264 or HEVC (H.265) video with AAC audio |
|---|---|
| Copy without re-encoding | Rarely: the codecs are not compatible, so the video is re-encoded |
| When re-encoded | VP8 video with Vorbis audio |
| Opens in | all current browsers and VLC; iPhone apps, PowerPoint and many editors do not |
Sizes are typical values; your files will vary with content and settings.
MOV QuickTime Movie
MOV is Apple's QuickTime container and the format iPhones and many cameras record to. It often holds HEVC or ProRes video, which keeps quality high but files large.
MOV converterWebM WebM Video
WebM is an open, royalty-free container built for the web, usually holding VP8 or VP9 video with Opus or Vorbis audio. Browser screen recorders and many web apps save WebM by default.
WebM converterHow to use the MOV to WebM Converter
- 1
Choose a MOV file or drop it onto the page.
- 2
Review the video options. The defaults suit most files.
- 3
Click Convert and download your WebM when processing finishes.
Why convert MOV to WebM?
MOV files come from iPhones, QuickTime screen recordings on a Mac, and many cameras. Windows players, Android and many websites handle MOV inconsistently. Choose WebM to embed video on a website using open, royalty-free codecs.
Frequently asked questions
Will the WebM lose quality?
Both formats are lossy, so converting re-encodes the data once more. Using a high quality setting keeps the generational loss very small. Avoid converting the same file back and forth repeatedly.
Does converting MOV to WebM re-encode the video?
Rarely: the codecs are not compatible, so the video is re-encoded. A typical MOV contains H.264 or HEVC (H.265) video with AAC audio. Otherwise the result is VP8 with Vorbis audio.
Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.