NUT vs OGV
A detailed comparison of NUT Container and OGV Video — file size, quality, compatibility, and which format to choose for your workflow.
NUT Container
Video FilesNUT is an open multimedia container format designed by MPlayer and FFmpeg developers as a simpler, more robust alternative to existing containers. It supports any codec and offers good error resilience with low overhead.
About NUT filesOGV Video
Video FilesOGV (Ogg Video) is an open video format using Theora codec in an Ogg container.
About OGV filesStrengths Comparison
NUT Strengths
- Technically efficient.
- Low overhead.
- FFmpeg-native support.
OGV Strengths
- Patent-free codec (Theora) and container (Ogg).
- Mandatory for Wikipedia uploads — preserves public-domain video.
- Good for small educational clips.
- Open-source reference implementations.
Limitations
NUT Limitations
- Tiny ecosystem.
- Overshadowed by MKV.
- Rarely used in production.
OGV Limitations
- Compression lags H.264 by ~40% at equal quality.
- Hardware decoders never adopted Theora.
- WebM (VP9/AV1) is the modern open-codec choice.
- iOS and Safari never supported Theora natively.
Technical Specifications
| Specification | NUT | OGV |
|---|---|---|
| MIME type | video/x-nut | video/ogg |
| Extension | .nut | .ogv |
| Design | FFmpeg/MPlayer collaborative spec | — |
| Encoding | Variable-length integers | — |
| Container | — | Ogg |
| Video codec | — | Theora (typical); Dirac, VP8 (rare) |
| Audio codec | — | Vorbis, Opus, FLAC |
Typical File Sizes
NUT
- 10-min H.264 clip 80-200 MB
OGV
- Short educational clip (1 min, 480p) 8-15 MB
- Wikipedia demo video 5-50 MB
Ready to convert?
Convert between NUT and OGV online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.
Frequently Asked Questions
NUT (NUT Container) is a video container format that bundles one or more video streams, audio tracks, and optional subtitles into a single file. The container format determines how metadata is organised and which codecs can live inside; the visual quality itself depends on the codec (H.264, H.265, VP9, AV1) rather than the NUT wrapper. It is part of the video files family.
OGV (OGV Video) is a video container format that bundles one or more video streams, audio tracks, and optional subtitles into a single file. The container format determines how metadata is organised and which codecs can live inside; the visual quality itself depends on the codec (H.264, H.265, VP9, AV1) rather than the OGV wrapper. It is part of the video files family.
VLC, MPV and PotPlayer play nearly every NUT file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche NUT variants may fail. If a device refuses your NUT, convert to MP4 with our NUT to MP4 converter for universal playback.
VLC, MPV and PotPlayer play nearly every OGV file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche OGV variants may fail. If a device refuses your OGV, convert to MP4 with our OGV to MP4 converter for universal playback.
Upload your NUT to KaijuConverter and pick MP4, MOV, MKV, WebM, or any other target. Our pipeline uses FFmpeg under the hood and stream-copies when codecs are compatible (no quality loss) or transcodes at high-quality defaults otherwise. Conversion runs server-side; both files delete within two hours.
Only when the target requires re-encoding. If the codecs inside NUT match what the target container supports, FFmpeg stream-copies the streams and the output is bit-identical to the source. Transcoding uses transparent quality defaults (CRF 20–23 H.264) and produces output indistinguishable from the original at normal viewing distance.