MP4 ↔ MOV converter
Swap between MP4 and MOV — stream copy, no re-encode, near-instant, no quality loss.
Your iPhone exports MOV but the other player only takes MP4, or your editor is picky about containers — yet often the video codec inside (H.
Target container
Container swap only, no re-encode — quality unchanged, near-instant.
How to use mp4 ↔ mov
- 1Drop in or select an MP4 or MOV file.
- 2Choose the target container (MP4 ↔ MOV).
- 3Click Convert. ConvertMeow uses -c copy stream copy to re-wrap without re-encoding.
- 4Download the result. Near-instant, quality unchanged.
Why use ConvertMeow's MP4 ↔ MOV?
- Re-wrap, not recompress: the video/audio streams are copied verbatim, so quality is bit-identical — there's no "loses a bit each time".
- Near-instant: skipping encoding means even a few-hundred-MB file finishes in seconds; it's a container change, not a transcode.
- Local: the file never goes to a server, so private videos stay private even when you change format.
Frequently asked questions
No. This is stream copy (-c copy) — the video and audio data are moved verbatim into the new container with no re-encode, so quality is identical. It changes the file's wrapper, not its content.
If the source MOV uses a codec the MP4 container doesn't support (like ProRes or certain Apple-only codecs), a plain re-wrap will fail to play — that case needs a real re-encode. If a result won't open, use the video compressor to re-encode it to standard H.264 MP4.
Updated · ConvertMeow team
Sources, review and limits
Last verified
2026-06-17
Author
ConvertMeow editorial desk
Reviewer
Browser media tooling review
Primary sources
- Browser File, Canvas, Audio and Video APIs
- Open-source client-side conversion libraries where a format needs a parser or encoder
- User-provided files processed in the browser
Conversion output depends on the original file, browser support and codec limits. Use the exported file for convenience, and verify mission-critical media in your own workflow.