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Convert MP4 to MOV

Turn MP4 files into QuickTime MOV files on this device. H.264 video and AAC sound are copied, not re-encoded.

Converts MP4 videos to MOV, the QuickTime format. It is free, needs no account and adds no watermark, and your video is not uploaded: your browser reads the file and writes the MOV inside this tab. H.264 video and AAC sound are copied into the MOV as they are, so the picture is not changed, and any other codec is re-encoded by your browser. The size limit is your device’s memory (phones hold less), and after one visit and a short wait the page works offline.

Drop MP4 files to convert to MOVor click to choose files. Batches welcome.

    H.264 video and AAC sound are copied as they are, so those files convert in seconds with no quality loss. Other formats are re-encoded.

    Working…

    Done

    Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.

    MOV is the QuickTime container, and MP4 is a close cousin: both wrap the same kinds of streams, most often H.264 video and AAC sound. Some programs and workflows ask for a .mov file even when the video inside is no different, and this page makes that file.

    Worked example. You have talk.mp4, a ten-minute screen recording at 1920×1080 with H.264 video and AAC sound. Drop it and press Convert to MOV. The video and the sound are copied into a MOV without being re-encoded, so it is done in about the time it takes to read the file, and the picture is exactly as it was. The line under the result reads "1920×1080, 10:00, H.264 copied, no quality loss", and you download talk.mov.

    What is re-encoded. If the MP4 holds video in another codec, such as VP9 or AV1, your browser re-encodes it to H.264 at high quality, and the line reads "re-encoded to H.264". Sound in a codec other than AAC, MP3 included, is re-encoded to AAC. A re-encode takes longer and, like any lossy re-encode, can cost a little detail. A browser that cannot write H.264 or AAC says so and writes nothing, because a MOV in another codec may not play in QuickTime.

    Only the main video and one sound track are kept: extra sound tracks and subtitles are left out.

    For the other direction, use MOV to MP4. To make a large video smaller first, Compress video lets you choose a size.

    How it works

    1. Drop one or more MP4 files, or tap to pick them.
    2. Tick Remove the sound if you want a silent MOV.
    3. Press Convert to MOV. One file downloads straight away; several download as a zip.

    In your browser, not on a server

    Mediabunny (MPL-2.0), a media toolkit written in TypeScript, reads the MP4, WebM or MKV container in your tab and writes a QuickTime MOV. H.264 video and AAC sound are copied across as they are. Anything else is decoded and re-encoded by your browser’s own encoders (WebCodecs) to H.264 and AAC, and where the browser cannot write those it says so instead of writing a file QuickTime may not play.

    Compared with upload-based tools: The video is read from your disk and the MOV is written in memory on your device, so there is no upload to wait for and the only limit is how much memory your device has.

    Verify it yourself. Give the page a short while after one visit to save itself for offline use, then turn off Wi-Fi or switch to airplane mode and run the tool again. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.

    Questions

    How do I convert MP4 to MOV?

    Drop the .mp4 file on this page and press Convert to MOV. Your browser reads the file and writes a MOV with the same name and a .mov ending. Nothing needs installing, and you can drop several files at once.

    Does converting MP4 to MOV lose quality?

    Not when the MP4 holds H.264 video: it is copied into the MOV as it is, and the result says "copied, no quality loss". When another codec has to be re-encoded, it is done at high quality, but a re-encode is never identical to the original. Making a MOV does not make a video sharper or larger in pixels.

    Why was my file converted so fast?

    MP4 and MOV are two wrappers for the same kinds of streams, so the video and sound can be moved from one to the other without being decoded. That takes about as long as reading the file. Only a file whose codec has to change takes longer.

    What about an MP4 with HEVC video?

    A browser that can decode HEVC re-encodes it to H.264. Elsewhere the HEVC stream is copied into the MOV unchanged. Which of the two happens depends on your browser, and the line under the result says which.

    Will my editing program open the MOV?

    A MOV that holds H.264 video and AAC sound is the usual kind of MOV, so most programs that open MOV files open it. Programs differ in what they accept, so open one converted file in yours before you convert a whole folder.

    Can I convert MP4 to MOV without uploading the file?

    Yes. Your browser reads the MP4 from your disk and writes the MOV with code running in this tab, and any re-encode is done by the browser’s own video encoder. Open the network tab, run a conversion, and your video is not among the requests. After one visit and a short wait the page works offline.

    More video and audio tools

    Video to MOV

    Turn MP4, WebM and MKV files into QuickTime MOV files. Converted on this device, not uploaded.

    Audio splitter

    Cut one long recording into separate files at the times you choose or at equal lengths. Done on this device, and the file is not uploaded.

    Video to MP3

    Pull the sound out of a video, or turn any audio file into an MP3. Your files are converted on this device and never uploaded.

    Video to GIF

    Trim a clip, pick a size and frame rate, and get a looping GIF. The video is decoded by your browser and never leaves this device.

    Other conversions