Free video tool · runs in your browser

MOV to MP4 converter

Q: Can I convert MOV to MP4 without losing quality?

Yes, if Auto can copy H.264 or H.265 video with AAC or MP3 audio, or no audio. It converts other codec combinations to H.264/AAC, which can lose detail.

Q: Do I need to convert MOV before uploading to Upstream?

Upstream remuxes MOV to MP4 automatically when you upload it. HEVC and ProRes files still get a Fix with reencode prompt. Convert them to H.264 here if you want to do that before uploading.

Q: Can it convert ProRes MOV files?

Yes. The converter decodes ProRes and re-encodes it as H.264. Keep the ProRes original for editing. The conversion loses editing detail and any transparency.

Q: Will the MP4 keep transparency?

No. H.264 output is opaque; it does not preserve the alpha channel used for transparency. Upstream also flags ProRes and MOV files with alpha as unplayable.

Q: Is it free, with no watermark?

Yes. The converter is free. You can download the MP4 without an account or a watermark.

Q: Are my files uploaded?

No. Your browser downloads FFmpeg and runs it on your device through WebAssembly. The video stays on your device during conversion.

Q: Is there a file size limit?

Keep files under 1 GB. A smaller file can still run out of browser memory, particularly on a phone. Test a short clip first. Use a desktop converter for large files.

Convert MOV to MP4 on your device. Keep compatible tracks unchanged with a remux, or re-encode ProRes and HEVC footage as H.264.

No sign-up
Free download
No watermark
Files stay on your device

Schedule this video in Upstream. Stream it to YouTube or Twitch at a set time, or keep a playlist running 24/7.

Schedule your video

Drop a MOV file here or Choose a file MOV · files under 1 GB · nothing is uploaded

What is MOV?

MOV is the QuickTime container. Its video might be H.264, HEVC, ProRes or another codec. Changing MOV to MP4 alone does not change that codec, so some players may still be unable to open it.

Why convert MOV to MP4?

Use this converter when a destination needs MP4 or your MOV needs H.264 video. Upstream already remuxes MOV to MP4 on upload. ProRes and HEVC still need re-encoding; select Convert to H.264 here to do that first.

How to convert MOV to MP4

1
Add your MOV file
Choose a MOV file from your camera, phone or editor.
2
Choose a conversion mode
Auto remuxes compatible tracks without changing them. Select Convert to H.264 for HEVC or playback on more devices.
3
Download the MP4
Pick a quality setting if you are re-encoding. Run the conversion, then download the MP4.

Conversion settings and limits

Remux or convert

Auto copies H.264 or H.265 video if the first audio track is AAC or MP3, or the file has no audio. It converts other combinations to H.264/AAC. Select Convert to H.264 to re-encode regardless of the source codec.

Quality and file size

The quality settings use CRF 18 for High quality, 23 for Balanced and 28 for Small file. A lower number keeps more detail and usually makes a larger file. These settings have no effect when remuxing.

Audio tracks

Audio is converted to 128 kbps AAC. The converter keeps the first audio track; it does not mix separate tracks. Files without audio stay silent.

Browser memory

The file must be under 1 GB. Your browser needs memory for the source, the output and decoding, so even a smaller file can fail, especially on a phone. Use a desktop converter for long recordings or archives.

Keep the original

Keep the original file. The MP4 has only the first video track; it drops subtitles, extra tracks, attachments, chapters and source metadata.

Video output

Re-encoded video is opaque and 8-bit. An odd width or height may be rounded down by one pixel. The converter does not tone-map HDR or preserve Dolby Vision.

Before you convert a MOV

The file stays on your device

Your browser downloads FFmpeg and runs it on your device through WebAssembly. The video stays on your device during conversion.

Free, with no watermark

The converter is free. You can download the MP4 without an account or a watermark.

Files under 1 GB

Keep files under 1 GB. Smaller files can still run out of browser memory, particularly on phones.

Remux or convert

Copy compatible tracks without re-encoding, or choose H.264 for wider playback support.

When to use it

Convert footage from your camera, phone or editor.
Remux compatible tracks without quality loss.
Convert HEVC or ProRes footage to H.264.

Use it on a 24/7 stream

Download the H.264 MP4 and add it to your Upstream library (see accepted formats and reencoding). Add it to a queue for a 24/7 live stream, or use pre-recorded live streaming for a scheduled broadcast.

FAQ