MOV to MP4
Rewrap a QuickTime or iPhone recording as MP4, with nothing re-encoded.
By opening this website or using its tools, you agree to our Terms and Privacy Policy.
or drag it here
A MOV or QuickTime file
- Takes
- MOV files holding H.264, HEVC, VP9, or AV1 video. ProRes and other editing codecs are read but cannot be rewrapped into MP4 — they are refused by name rather than half-converted.
- Size
- Effectively unbounded, because no frame is ever decoded: the compressed packets are read off disk and written straight into the new container. Measured here, a 6 MB clip converted in about 10 milliseconds, and the cost scales with file size rather than with length or resolution.
Your file never leaves your browser during processing
How it works
To convert a MOV to MP4, drop the file onto this page — the video and audio are copied into the new container without being re-encoded, so the result is the same quality and it takes a moment rather than minutes. Everything runs in your browser and nothing is uploaded.
A .mov and a .mp4 are far more alike than their extensions suggest. Both are containers built on the same underlying format, and an iPhone recording stored as .mov almost always holds exactly the same H.264 video and AAC audio that a .mp4 would. What differs is the labelling around them. So there is nothing to convert: this page reads the compressed video and audio packets out of the QuickTime container and writes them into an MP4 one, without decoding a single frame.
That has three consequences worth stating plainly. Nothing is lost — the video data in the file you download is bit-for-bit the video data in the file you dropped in, verified by comparing the extracted streams. The file size barely changes, because the same bytes are being stored with a slightly different index. And it is fast in a way re-encoding never is: a six-megabyte clip converts in about ten milliseconds here, and the time scales with file size rather than with length or resolution.
The tool has no settings, and that is deliberate rather than unfinished. There is nothing to decide: the quality, the resolution, the frame rate, and the length are all fixed by the source, because none of them are being touched. A quality slider here would imply a choice that does not exist. If you actually want a smaller file, that is re-encoding, which the video compressor does and says what it costs.
Two cases the page checks per file rather than assuming. Some MOV files from cameras and editing software hold ProRes or another editing codec, which an MP4 cannot legally carry — those are refused by name, with a pointer to the compressor, rather than producing a file that opens nowhere. And a MOV holding an audio codec MP4 does not support has its video converted with the sound left behind, which the page tells you before you commit rather than after you notice.
Rotation is carried across deliberately. Phones record portrait video as a landscape frame plus an instruction to rotate it, and that instruction lives in the container rather than in the frames — drop it during the rewrap and a correctly-converted portrait video plays on its side, which looks exactly like the tool corrupting the file.
FAQ
Does converting MOV to MP4 lose quality?
Not here. The video and audio are copied into the new container without being decoded, so the streams in the result are identical to the ones in the source. Tools that re-encode do lose a generation of quality; this one has no encoder in the path at all.
Why is it so fast?
Because nothing is being converted. A MOV and an MP4 usually hold the same H.264 and AAC streams, so the work is reading packets out of one container and writing them into another — closer to renaming a file than to converting one.
Is my video uploaded?
No. The whole rewrap happens in your browser, and the network counter under the tool monitors activity while your file is processed and stays at zero bytes sent. There is no server, which is also why there is no size limit.
Will the file get smaller?
Barely. It holds the same video in a different wrapper, so expect a difference of well under one percent, in either direction, from how the index is packed. To actually reduce the size you need to re-encode, which is what the video compressor is for.
Why was my MOV refused?
Almost always because it holds ProRes or another editing codec that an MP4 container cannot carry. Those files can only be converted by re-encoding them, which the compressor will do. The page names the codec rather than failing vaguely.
Will my portrait video stay portrait?
Yes. The rotation instruction that phones store alongside the frames is carried into the new file. Dropping it is a common bug in conversion tools and produces a video that plays sideways despite being otherwise correct.
How large a MOV can I convert?
Effectively any size, because no frame is ever decoded and the file is read off disk in pieces rather than loaded whole. Nothing is uploaded, so there is no server limit involved either.