Turn a QuickTime MOV (from your iPhone or Mac) into an MP4 that plays everywhere - in seconds, in your browser.
MOV is what your iPhone, iPad, or QuickTime Pro records by default. It plays perfectly on Apple devices but is awkward everywhere else: Windows Media Player often refuses it, Discord and older editing tools trip over its structure, and upload-to-web flows frequently ask for MP4 instead. Converting to MP4 fixes all of that in one go.
The good news: MOV and MP4 share the exact same underlying container (ISO-BMFF), so most of the time this is a pure remux - we re-wrap the video and audio tracks into an MP4 shell without re-encoding them. That means zero quality loss and conversions measured in seconds rather than minutes, even for hour-long clips. Everything runs locally in your browser.
MOV is Apple's QuickTime container and shares the same ISO-BMFF structure as MP4 - which is why converting between them is usually a fast remux rather than a re-encode.
MP4 is the most widely supported video container, based on the ISO Base Media File Format. It can carry H.264, H.265 and AV1 video with AAC, MP3, or Opus audio.
Drag a MOV onto the converter above, or click the box to pick one from your device.
We've preselected MP4 as the output format. Change it from the dropdown if you want a different target.
Click Convert and wait for the progress bar to finish. Download the MP4 when it's ready.
Extract the audio from a QuickTime MOV and save it as an MP3 - in your browser, no upload needed.
Convert an MKV (Matroska) video to MP4 so it plays on phones, TVs, and every video editor - free, in your browser.
Convert a WebM video (downloaded from YouTube, Twitter, or a web recorder) to MP4 - fast, in your browser, no upload.