MOV → MP4

Manual

1. Why convert MOV to MP4

   Videos shot or exported from an iPhone or QuickTime on Mac save as MOV. That works fine between Apple devices, but Windows PCs, some Android phones, older TVs and projectors, and some editing software can struggle to read MOV. Converting to MP4 (H.264) gives you a file that plays almost anywhere.

2. How to use it

   (1) The output format is already set to MP4 on this page. Drag and drop your MOV file onto the drop zone, or click it to choose one — once loaded, its resolution, length and codecs are shown. (2) Optionally set a resolution (original / 1080p / 720p / 480p) and quality (high / standard / light); 'original' and 'standard' work fine if you're not sure. (3) Press convert; a progress bar tracks the encode, and a download button plus a before/after size comparison appear once it finishes.

3. What happens to the video and audio

   Whatever codec the MOV was shot with — H.264, HEVC, or otherwise — the MP4 output is always re-encoded to H.264 video with AAC audio (falling back to Opus if AAC isn't available), giving you the most broadly playable MP4 possible. This uses the browser's built-in WebCodecs API to encode with your device's hardware (GPU), so it's relatively fast.

4. FAQ

   Why won't MOV play on Windows?

   Windows' default media player often doesn't support MOV, or needs extra codecs installed. Converting to MP4 makes it much more likely to play without installing anything extra.

   Does converting reduce quality?

   Keeping the resolution at 'original' and quality at 'standard' or 'high' keeps the visible difference minimal. Choose 'light' quality or a lower resolution if file size matters more.

   Can I convert to a resolution larger than the source?

   No — upscaling wouldn't improve quality, so choosing a resolution larger than the source keeps the original resolution instead.

   Is my file uploaded anywhere?

   No — the video is processed entirely inside your browser and never sent to a server.