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MP4 to NUT - Online Video Converter
Convert MP4 to NUT online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP4 to NUT
Drop MP4 video here or click to select
MP4
NUT (H.264 / AAC)
About MP4 to NUT
Convert MP4 to NUT. MP4 pairs H.264 video with AAC audio in the ISO base media container. NUT is FFmpeg's research container built for seeking and error recovery. Few players open it, so convert for sharing..
Why convert MP4 to NUT?
- Smaller files with NUT lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MP4 vs NUT
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | MP4 pairs H.264 video with AAC audio in the ISO base media container. | NUT is FFmpeg's research container built for seeking and error recovery. |
When not to convert MP4 to NUT
- Skip NUT for archival masters: lossy compression discards detail, so keep the MP4 original.
- Keep a master copy: repeated exports stack small losses, so archive MP4 before batch NUT shares.
Limits
Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. Few players open it, so convert for sharing. Encode NUT (H.264 / AAC) from MP4 at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert MP4 to NUT?
Drop your MP4 file onto this page, choose quality and codec settings, then click Convert. The result downloads as NUT instantly. All processing runs in your browser.
What codec is used for NUT?
The default codec for NUT is H.264 / AAC. You can change the video and audio codec in Advanced mode.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.