Does MOV to MP4 lose quality?

The video is re-encoded to H.264. On the High setting the result is visually the same as the source.

Will the audio still work?

Yes. Audio is converted to AAC, which every MP4 player supports.

Is there a file size limit?

Browsers handle roughly 1 GB in memory. Files under about 300 MB and 1080p are comfortable; 4K works but is slow.

Is it free and private?

Yes. No sign-up, no watermark added, and the file never leaves your device.

Free · No sign-up

MOV to MP4

Turn an iPhone or Mac MOV into an MP4 that plays everywhere, without sending it anywhere – no upload, no sign-up, no watermark added.

AI · Paid creditsAI Video Watermark Remover AI Video Eraser

No upload
No sign-up
No new watermark
MP4, MOV, WebM, MKV, AVI

Drop a video here or click to choose

MP4, MOV, WebM, MKV, AVI · best under 300 MB

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A real input to try

Start with an openly licensed sample.

An 8-second blue-mug clip from the Apache-2.0 remove-ai-watermarks project, documented as Google Flow / Veo 3.1 Fast. This MOV is a local remux of the source MP4 with identical H.264/AAC packets. It is a conversion input, not a provider-native format export or this tool’s result. Browser container support varies.

Input · video/quicktime

This card shows an input, not a processed result. Loading it does not upload it or start a paid task.

Source: wiltodelta · Apache-2.0
Input: 1280 × 720 · 0.89 MiB

Attribution and modifications · Media facts and hashes

MOV is Apple's QuickTime container. iPhones, iPads and Macs record into it, often with HEVC (H.265) video. Windows Media Player, many Android phones, older TVs and some websites refuse it or play it without sound.

This converter re-encodes the MOV into an MP4 with H.264 video and AAC audio, the most widely supported combination there is. Drop the file in, click Convert, download.

Everything happens in your browser through FFmpeg WebAssembly. The video is never sent to a server, no account is needed, and no watermark is added.

Record in Most Compatible

On iPhone, Settings › Camera › Formats › Most Compatible records H.264 directly. Use this converter for videos you already have in HEVC.

HEVC takes longer

Decoding HEVC in WebAssembly is slower than H.264. A one-minute 1080p iPhone clip takes a minute or two; 4K takes noticeably longer.

Big files

iPhone 4K at 60 fps is about 400 MB per minute. Trim to the part you need with the video cutter first, or convert in shorter pieces.

All tools

A place for every edit.

Remove a logo, refine your footage, change a format or take the sound with you. Find the tool for your next step.

15 tools

Watermark removal

Start with the part you want to remove.

10 tools

Edit video

Shape the frame, timing and movement.

7 tools

Convert

Get the format your next step needs.

3 tools

Audio

Keep the sound, without the video.