New wrapper.
Same everything else.
Rebuild a MOV as MP4 by copying the video and audio — no re-encoding, seconds not minutes, and nothing leaves your device.
How do I convert MOV to MP4 without losing quality? Load the MOV and press Convert to MP4. The tool copies the H.264/HEVC video and AAC audio into an MP4 container — a "remux" — so it finishes in seconds with byte-identical video and audio. No upload, no re-encode.
MOV to MP4 converter
This is a container conversion, not a re-encode: the exact video and audio data are moved into an MP4 wrapper. iPhone and QuickTime MOVs convert losslessly; unusual codecs are detected and reported honestly.
MOV and MP4 are cousins
Both are built on the same box structure (ISO Base Media Format) — MOV is Apple's original version, MP4 is the standardized one everything accepts. If the codecs inside are already MP4-friendly (H.264 or HEVC video, AAC audio), converting is just rewriting the index: same data, new wrapper. That's why this tool takes seconds while "real" converters churn for minutes — they decode and re-encode every frame.
Why upload-free matters here
Videos are the most personal files most people convert — home footage, work recordings, kids' clips. Uploading them to a converter site means a copy sits on someone else's server with unknown retention. This tool never sends a byte: the whole conversion runs in your browser's memory.
When you need it
- iPhone footage — QuickTime .MOV files that portals and editors prefer as .MP4
- Mac screen recordings — QuickTime saves .MOV; upload forms often reject it
- Camera exports — many cameras write MOV; MP4 plays on more TVs and apps
- Anywhere an upload bounces — "unsupported format" messages usually mean this conversion
After converting
If the MP4 is too big for an upload limit, the video compressor handles that next. For cutting, rotating, or muting the clip, the trimmer, rotator, and mute tool all work without re-encoding too. Honest limit: MOVs using PCM audio (older QuickTime recordings) or ProRes video can't be copied into MP4 losslessly — that needs a re-encode, and this tool will tell you when it sees one.
How do I convert MOV to MP4?
Load the MOV file and press Convert. The H.264/HEVC video and AAC audio are copied into an MP4 container without re-encoding — it takes seconds even for large files, with zero quality loss, entirely on your device.
Does converting MOV to MP4 lose quality?
No. This is a container conversion (a remux): the video and audio data are copied byte-for-byte into a new MP4 wrapper. Nothing is decoded or re-encoded, so the picture and sound are identical to the original.
Why do most converters take so long?
Most online converters actually re-encode the video — decoding every frame and encoding it again, which takes time proportional to length and costs quality. A container conversion just rewrites the wrapper, so it finishes in seconds.
Which MOV files work?
MOV files with H.264 or HEVC video and AAC audio — which covers iPhone recordings, QuickTime exports, and most camera files. MOVs with PCM/LPCM audio or ProRes video need actual re-encoding, and the tool tells you when it hits one.
Will the MP4 play everywhere?
Yes — MP4 with H.264/HEVC video and AAC audio is the most universally accepted combination: browsers, phones, TVs, editors, and every upload portal. Rotation metadata from phone recordings is preserved.