Drop in MOV files, including HEVC iPhone clips, and get MP4s back in one pass.
Drop video files here or click to browse
Files queue into the current batch until you convert · MP4, MOV, MKV, WebM, M4V
A folder of MOV clips off an iPhone or a camera is the most common reason people look for a MOV-to-MP4 converter. The MOV container plays fine in QuickTime and Final Cut, but the rest of the world (Android, Windows Media Player, social uploaders, every browser) is happier with MP4. Converting before sharing usually saves a round of "this file won’t open" messages later.
Many recent iPhone videos use HEVC inside the MOV container, which can create compatibility issues outside Apple’s ecosystem. On older devices and many cameras, the codec inside is H.264. This tool is designed to convert common HEVC and H.264 MOV files into more widely compatible MP4 output.
You can resize and lower the quality preset in the same pass, which is useful when the clip is bound for chat or social rather than archive.
Many iPhone HEVC MOV clips can be converted to MP4 in this tool. The result plays on Windows, Android, and older browsers without extra HEVC codecs.
MOV and MP4 are sibling MPEG-4 containers. When the source is already in a browser-friendly format, conversion may preserve quality more closely than heavier recompression workflows.
Large 4K iPhone clips can often be reduced substantially at the balanced preset, though exact results depend on the source file and scene complexity.
HEVC support depends on the browser, operating system, device, profile, and bit depth. WebCodecs does not require any browser to ship HEVC, and this app does not bundle a browser-independent HEVC software decoder. Unsupported files fail instead of receiving a guaranteed software fallback.
Sources: W3C: WebCodecs specification · MDN: checking decoder support · Reviewed 2026-10-12
10-bit HDR, Dolby Vision, and other HEVC variants are not supported uniformly. If a clip fails, try another current desktop browser; success still depends on that device’s decoder support.
Sources: MDN: checking decoder support · Reviewed 2026-10-12
Hour-plus single clips need free RAM and disk during encoding. If a single huge file struggles, try dropping the output width or splitting the clip beforehand.
Convert a folder of MOV files to MP4 in your browser without uploading anything.
Drag and drop one or many MOV files into the queue, or click to pick them.
Output is preset to MP4. Pick a quality preset (balanced is a good default) and an optional width if the original is very large.
Click Convert files. Each file is processed locally in your browser.
Download converted MP4 files individually, or grab the whole batch as a ZIP.
No. The converter runs in your browser via WebCodecs. Your MOV files stay on your device. There is no upload endpoint.
In many cases, yes. Common HEVC iPhone clips can usually be converted in supported browsers, though some HDR or Dolby Vision variants remain browser-dependent.
Renaming sometimes works because both are MPEG-4 family containers, but it fails whenever the codec inside is not supported by the player. Converting through this tool produces an MP4 that is generally easier to play and share across devices.
At the higher quality preset and the original width, the difference is usually invisible for typical viewing. The balanced preset is a good call for sharing; files shrink several times over with little visible quality drop.
AAC audio in the MOV is preserved as AAC in the MP4. You can also tick Remove audio to drop the audio track entirely.
Conversion requires WebCodecs video encoding and decoding, but each browser and device supports a different codec subset. MP4, MOV, and MKV output use H.264 video with AAC audio; Firefox and desktop Linux browsers do not natively encode AAC. Safari 16.4 added video WebCodecs, while Safari 26 added audio encoding and decoding. WebM output uses VP9 with Opus and may work where AAC output does not. For the widest support, use a recent desktop Chrome or Edge release, or Safari 26+. The converter still validates the actual source and output codec configuration when a job starts.
Sources: MDN: WebCodecs API · MDN: WebCodecs codec selection · WebKit: WebCodecs video support in Safari 16.4 · WebKit: WebCodecs audio support in Safari 26 · Mediabunny: supported formats and codecs · Reviewed 2026-10-12
Wrap MP4 video into the MOV container Apple-focused workflows tend to expect.
OBS recordings, screen captures, and rips. Turn folders of MKV into MP4 in one pass.
Take web-optimized VP8/VP9/AV1 WebM files and turn them into widely accepted H.264 MP4.
Drop in a folder of mixed-format videos. Pick one destination format. Download the whole batch.
Conversion runs in your browser. Files stay on your device.