FREE VIDEO TOOL
MOV to MP4 Converter
Drop in MOV, MKV, AVI, or WebM videos and get MP4s back. Tries a fast, lossless remux first and only re-encodes when a file actually needs it.
Drop your video here
MOV, MP4, MKV, AVI, WebM - multiple files supported
Why Use Our MOV to MP4 Converter?
Fast Lossless Remux First
Most phone-recorded MOV files already contain H.264 or HEVC video and AAC audio. For those, the existing streams are repackaged into an MP4 container in seconds, with zero quality loss.
Automatic Re-encode Fallback
If a file's codec can't be remuxed directly into MP4, it's automatically re-encoded with H.264 High Profile and AAC instead, so the conversion still finishes.
Batch Convert Multiple Videos
Drop in as many video files as you need and convert them one after another. Download each finished MP4 individually.
YouTube and Social Media Ready
Output uses H.264 High Profile, AAC 192k audio, yuv420p color, and web fast-start - the same settings recommended for YouTube, Instagram, and other platforms.
100% Private
Your videos are never uploaded anywhere. Conversion runs locally in your browser using a WebAssembly build of FFmpeg.
Supports MOV, MKV, AVI, and WebM
Not just MOV. Drop in MKV, AVI, or WebM files and they convert to MP4 the same way.
Frequently Asked Questions
Is my video uploaded to a server?
No. The conversion runs entirely in your browser. Your video is never uploaded anywhere.
Why does the first conversion take a moment to start?
The tool sets itself up the first time you use it each visit. After that, conversions start right away.
Will converting reduce my video's quality?
Usually not. Most MOV files are remuxed (repackaged into MP4 with no re-encoding), which is lossless. Only files that can't be remuxed are re-encoded, using a near-lossless CRF 18 setting.
How long does conversion take?
A remux takes a few seconds regardless of length. A full re-encode is much slower since it runs without hardware acceleration in the browser - a long or large video can take several minutes.
What file types can I convert?
MOV, MKV, AVI, and WebM all convert to MP4. Most other common video containers will also work too.
Is there a file size limit?
There's no hard limit, but very large or very long videos use a lot of memory and can be slow or unstable in some browsers. Keep the tab open and active while converting.
Is this tool free?
Yes. It's free to use with no sign-up.
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