Convert QuickTime to MP4
Convert a local MOV video to an H.264/AAC MP4 in your browser.
Your video stays on this device; it is not uploaded. The conversion engine downloads on first use.
Output uses H.264 video and AAC audio. Some source codecs may be unsupported; re-encoding can change quality.
Convert MOV to MP4 in three steps
- 1
Choose your video
Select one local MOV file up to 100 MB.
- 2
Start conversion
Download the engine on first use, then keep this tab open.
- 3
Save the MP4
Download the converted file to your device.
How QuickTime to MP4 conversion works
QuickTime MOV is a media container. This tool re-encodes video to H.264 and audio to AAC in an MP4 container for broader playback compatibility. It does more than change the filename extension.
Frequently asked questions
Is my video uploaded?
No. Conversion runs in this browser on your device.
Does this work offline?
First use needs internet to download the engine. Later use depends on cached engine files.
Will quality stay the same?
The video is re-encoded to H.264/AAC. Quality and file size can change; lossless conversion is not guaranteed.
Why can conversion fail?
Unsupported source codecs or limited browser memory can cause failure, even below 100 MB.