WebM to MOV converter
Produce a QuickTime MOV that opens on macOS by double-click and imports into Final Cut Pro and iMovie without complaint.
Drop a WebM file here, or choose one
Converted on your device · nothing is uploaded · no size limit
- No upload — files stay on your device
- No signup and no watermark
- No file size limit
MOV is Apple's container, and on a Mac it is the path of least resistance. QuickTime opens it, Finder previews it with the spacebar, iMovie and Final Cut import it directly, and Keynote will embed it in a slide.
WebM does none of those things on macOS without installing extra software. If your workflow lives inside Apple applications, converting once at the start saves a series of small frustrations later.
How to convert WebM to MOV
- Choose your file. Drag a WebM file onto the strip above, or click it to browse. The first file also loads the converter itself, which takes a few seconds.
- Wait for the bar to fill. Encoding runs on your own processor. A one-minute 1080p clip usually takes under a minute; keep the tab open while it works.
- Download the MOV. The finished file appears as a download button and saves straight to your device.
Why convert WebM to MOV
QuickTime Player opens it directly
No VLC, no browser, no third-party codec pack. The file behaves like every other video on the machine.
Final Cut Pro and iMovie accept it
Both are built around QuickTime. A WebM dropped into either usually produces an unsupported media message; a MOV with H.264 imports cleanly.
Spacebar preview works in Finder
Quick Look renders MOV thumbnails and previews, which makes sorting through a folder of clips far quicker.
Slightly higher quality setting
This conversion uses CRF 21 rather than the 23 used for MP4, because MOV files usually go into an edit rather than straight to a viewer, and edits benefit from a little extra headroom.
MOV and MP4 side by side
| WebM | MP4 | |
|---|---|---|
| Origin | Apple QuickTime | ISO / MPEG standard |
| Inside | Usually H.264 + AAC | Usually H.264 + AAC |
| macOS integration | Complete | Complete |
| Windows and Android | Needs a capable player | Plays natively |
| Best used for | Editing on a Mac | Sharing and publishing |
Doing it yourself with ffmpeg
If you convert files regularly, or need to process a whole folder, run it locally instead. This is the same operation the tool above performs:
ffmpeg -i input.webm -c:v libx264 -crf 21 -preset veryfast -pix_fmt yuv420p -c:a aac -b:a 192k output.movEvery flag is explained in the guide to the ffmpeg command.
Questions
Is MOV actually different from MP4?
Barely. MP4 was derived from the QuickTime file format, and both usually contain identical H.264 video and AAC audio. The difference is the wrapper and the software that recognises it. If you are sharing rather than editing, MP4 is the safer choice.
Will this work with ProRes?
No. ProRes is an editing codec with very large file sizes and is not available in a browser encoder. This produces H.264 inside a MOV wrapper, which is what most people actually need.
Can Windows play the result?
VLC and most modern players will. Windows Media Player is inconsistent with MOV files, so if the recipient is on Windows, convert to MP4 instead.
Does it keep the original resolution?
Yes. Resolution, aspect ratio and frame rate are all preserved; only the codec and container change.
Why yuv420p?
It is the pixel format QuickTime and Apple hardware decoders expect. Without it, some WebM sources produce a MOV that plays as a black rectangle.
Is anything uploaded?
No. The conversion runs in your browser and the file stays on your machine.