Free tool
Free MOV to MP4 converter, no upload
Convert MOV to MP4 in your browser, usually in seconds.
Your video
Drag a file here, paste it, or choose one.
.mov, .mp4, .m4v, .mkv, .webm, .avi, .wmv, .flv, .3gp, .gif. Up to 500 MB.
Up to 10 minutes long.
Your video never leaves your browser. The conversion runs on this machine.
More options
Result
Worked example
Measured on our own 20 second HEVC MOV at 1920 by 1080, laid out like an iPhone clip, converted to MP4 with fast mode on.
Source MOV
10.8 MB
MP4, HEVC kept
10.8 MB
Fast mode took 5 seconds, engine download included, and left the picture untouched. Forcing H.264 instead took 76 seconds and gave a 1.2 MB file; it shrank that much because our test clip is flat animation saved at a phone's bitrate.
1. Add the MOV. 2. Keep MP4 picked. 3. Convert locally. 4. Download the MP4.
What Interlace does
Filmed it on your phone? Next time, start from the document.
- Upload the PDF, SOP or slides you already have
- Interlace writes the script, draws each scene and adds the voice
- Download an MP4 for your LMS, intranet or phone
Real Interlace output, unedited. Shown silent and sped up.
Your file
IMG_0412.MOV
iPhone, HEVC, 0:20
Questions
Asked and answered
No. The file is opened by the page and converted by ffmpeg compiled to WebAssembly, on your own machine. There is no upload step, and closing the tab discards everything.
MOV and MP4 are built the same way: MP4 grew out of Apple's QuickTime format. When the video inside a MOV is H.264 or HEVC and the audio is AAC, an MP4 can hold them as they are. Fast mode copies the streams into the new file instead of decoding and encoding every frame, so a phone clip takes seconds and keeps every pixel.
Fast mode keeps HEVC as HEVC, and tags it the way QuickTime and Safari expect. Windows 11 plays it with Microsoft's HEVC Video Extensions, and recent Chrome and Edge play it on most machines. If a player refuses it, open More options, untick fast mode and convert again: you get H.264, which plays everywhere, at the cost of a full encode.
Yes. In Settings, Camera, Formats, choose Most Compatible. The iPhone then records H.264. The files are still .mov, but they rewrap to an MP4 that any player opens.
Not in fast mode: the video is copied bit for bit. A re-encode at Balanced is hard to tell from the source at normal size. Pick Best if you plan to edit the MP4 further.
500 MB and 10 minutes. Everything runs inside one browser tab, which has a fixed memory budget, and the encoder runs on a single thread. A rewrap takes seconds; a full re-encode runs at about real time for 720p and several times the clip length for 1080p. For anything bigger, a desktop encoder such as HandBrake is the better tool.
Turn this into a video
Create an account and start from a document, script, or prompt.