Is the MP4 to MOV converter free?

Yes. Transcodr is free with no accounts, watermarks, or hard limits beyond your device's available memory.

Are my files uploaded to a server?

No. The conversion runs locally via ffmpeg compiled to WebAssembly, so your MP4 file never leaves the browser tab.

Will the video lose quality?

Re-encoding always involves some loss, but you can raise the quality control before converting. MOV uses prores (HQ).

How do I convert MP4 to MOV?

Drop your MP4 file above (or click Browse) — the output is already preset to MOV — then click Convert and download the result.

MP4 → MOV · On-device · No upload

Convert MP4 to MOV

Convert MP4 to MOV in seconds, free and entirely in your browser. MP4 is the universally compatible H.264/AAC container that plays on virtually any device; MOV is Apple's QuickTime container, common straight out of iPhones and editing suites. Transcodr runs real ffmpeg compiled to WebAssembly, so your file is processed on your own device and never uploaded.

Drop files to convert

Video, audio, images, subtitles: anything ffmpeg can read. Drop them anywhere on the page or browse from disk.

Try a sample:

Convert immediately

Start encoding the moment you drop a file

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MP4 → MOV questions

Is the MP4 to MOV converter free?: Yes. Transcodr is free with no accounts, watermarks, or hard limits beyond your device's available memory.
Are my files uploaded to a server?: No. The conversion runs locally via ffmpeg compiled to WebAssembly, so your MP4 file never leaves the browser tab.
Will the video lose quality?: Re-encoding always involves some loss, but you can raise the quality control before converting. MOV uses prores (HQ).
How do I convert MP4 to MOV?: Drop your MP4 file above (or click Browse) — the output is already preset to MOV — then click Convert and download the result.

01 / Engine

Real ffmpeg, compiled to WebAssembly.

Same library Netflix, YouTube, and basically every command-line video tool relies on, running in a Web Worker. Pipe a file in, run a command, pipe bytes back out.

02 / Privacy

Nothing leaves the tab.

No uploads, no accounts, no telemetry beyond an anonymous pageview. We couldn’t see your files if we wanted to — there’s no server in the loop.

03 / Limits

It is, after all, a tab.

Files up to a few hundred megabytes convert comfortably. Beyond that, your browser starts asking pointed questions. Use the desktop ffmpeg for 4K masters.

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