About OGV Files
OGV Video
OGV (Ogg Video) is an open video format using Theora codec in an Ogg container.
Family
Video Files
Extension
.ogv
MIME Type
video/ogg
Can Use As
HOW OGV
CAME TO BE.
OGV is the Ogg container with video tracks inside — usually Theora, sometimes VP8 or Dirac. Theora itself descended from VP3, a codec On2 Technologies open-sourced in 2001; Xiph.Org maintained it into Theora 1.0 (2008). The .ogv extension was formalized around 2007 to give video-bearing Ogg files a clearly different extension from audio-only .ogg or .oga.
OGV’s moment came in the late 2000s when the HTML5 <video> tag was still figuring out which codec to bundle by default. Firefox, Opera, and Chrome added Theora playback; Safari and IE refused on licensing grounds. Wikipedia mandated OGV for all video uploads in 2010. Then WebM (VP8, 2010; VP9, 2013) arrived with better compression and the open-codec baton passed. Today OGV is mostly a Wikipedia and museum-grade-archive format.
CURIOSITIES &
TRIVIA.
Wikipedia requires all uploaded video to be in OGV or WebM — you cannot upload an MP4.
Theora inside OGV descends from VP3, an On2 codec open-sourced in 2001 — years before On2 was bought by Google and created VP8/VP9.
Between 2008 and 2012, HTML5's default "open" video was OGV — until WebM overtook it.
A single Ogg container can multiplex Theora video, Vorbis audio, and Kate subtitles all in one .ogv file.
Theora's compression efficiency lagged H.264 by a generation, which is why WebM/VP9 overtook it among open codecs.
STRENGTHS &
LIMITATIONS.
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
- 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.
Typical Sizes & Weights
Short educational clip (1 min, 480p)
8-15 MB
Wikipedia demo video
5-50 MB
Technical Specifications
- MIME type
- video/ogg
- Extension
- .ogv
- Container
- Ogg
- Video codec
- Theora (typical); Dirac, VP8 (rare)
- Audio codec
- Vorbis, Opus, FLAC
CONVERT FROM
OGV
Common Use Cases
Open source video, web
Related Formats
Popular comparisons
OGV vs JPG
Differences, file size, and when to choose each format.
OGV vs PNG
Differences, file size, and when to choose each format.
OGV vs WEBP
Differences, file size, and when to choose each format.
OGV vs GIF
Differences, file size, and when to choose each format.
OGV vs BMP
Differences, file size, and when to choose each format.
OGV vs MP4
Differences, file size, and when to choose each format.
Popular OGV conversions
The most-requested destinations when starting from OGV.
Frequently Asked Questions about OGV
Frequently Asked Questions
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 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 OGV 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 OGV 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.