What is OGV?
Complete guide to the OGV file format
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What is OGV?
OGV is the file extension for Ogg video files, combining the Ogg container format with the Theora video codec and the Vorbis audio codec. Theora is a free and open video compression format derived from VP3, released by the Xiph.Org Foundation in 2004. OGV emerged as a web video format around 2008 when the HTML5 video element was being standardized, as browser developers were seeking a royalty-free video format that could be included in the open web platform.
The format is entirely patent-free and royalty-free, which made it attractive for open-source software and projects that wanted to avoid the licensing complexities of H.264. Firefox, Chrome, and Opera supported OGV natively in their early HTML5 video implementations. While WebM (using the VP8/VP9 codec) has largely replaced OGV in web contexts, OGV remains used in open-source projects and communities such as Wikimedia Commons, which uses it for video uploads.
How OGV Is Assembled
OGV is an Ogg container, a format that multiplexes one or more logical bitstreams of media into interleaved pages, allowing the Theora video and Vorbis audio streams to be carried together and synchronized.[3] The IETF registered the Ogg media types, including the video/ogg type associated with the .ogv extension.[1]
Theora's Origins
Theora is derived from On2 Technologies' VP3 codec, which On2 donated to the Xiph.Org Foundation; the Theora bitstream was subsequently finalized in 2004.[2] Like other Xiph technologies it is published as a free specification, which was the basis for proposing it as a royalty-free baseline codec during early HTML5 video discussions.[4]
Technical Standing
Theora is a DCT-based, motion-compensated codec broadly comparable in design to earlier MPEG generations, and it generally lags behind H.264 in compression efficiency at a given quality.[2] Its patent-free status nonetheless kept it relevant for open platforms, though Xiph's later, more efficient codecs and the WebM project reduced its everyday use.[4]
Technical Details
OGV vs Other Video Formats
| Feature | OGV | WebM | MP4 |
|---|---|---|---|
| Type | Container[4] | Container | Container |
| Codec(s) | Theora, Vorbis[2] | VP8, VP9, AV1 | H.264, HEVC, AV1 |
| Standardized by | Xiph.Org[3] | Google / open | ISO/IEC |
| License | Royalty-free[1] | Royalty-free | Standardized |
| Device/browser support | Some browsers, niche | Modern browsers | Universal |
| Best for | Open free video | Open web video | Modern streaming |
OGV is the open Ogg/Theora format; WebM has largely replaced it as the royalty-free web video choice.
Pros and Cons
Advantages
No patents or licensing fees - safe to use in any software including open-source projects.
Fully documented open format with open-source reference implementations.
The preferred upload format for video on Wikipedia and Wikimedia Commons.
Native support in all major Linux distributions without licensing concerns.
Disadvantages
Theora produces larger files than H.264 at equivalent quality, using more bandwidth and storage.
Apple browsers and devices do not support OGV natively, requiring a fallback format.
Fewer editing and production tools support OGV compared to MP4 or WebM.
WebM (VP8/VP9) offers better compression with the same royalty-free advantages and broader support.
When to Use OGV
Here are the most common situations where OGV is the right choice:
Open Source Projects
Use OGV when distributing video in contexts where royalty-free formats are legally or philosophically required.
Wikipedia and Wikimedia
The required format for uploading videos to Wikimedia Commons and embedding in Wikipedia articles.
Linux Desktop Applications
OGV is well supported in Linux media applications and is appropriate for desktop open-source video.
Web Video Fallback
Provide OGV as an additional source alongside WebM for older Firefox-only environments.
Convert OGV Files
Need to convert your OGV files? Use our free online converter.
Try Video Converter FreeFrequently Asked Questions about OGV
What is the difference between OGV and OGG?
OGG is the general container format used for all Xiph media. OGV is the extension specifically indicating a video stream inside an Ogg container. Audio-only Ogg files typically use the .ogg or .oga extension.
Does OGV work in all browsers?
OGV works natively in Firefox, Chrome, and Opera but not in Safari or Internet Explorer. For universal browser support, use MP4 (H.264) or WebM alongside OGV.
Is OGV better than WebM?
WebM generally offers better compression than OGV while retaining the royalty-free status. For new projects, WebM is preferred over OGV.
Can I play OGV on Windows?
Windows Media Player does not support OGV, but VLC Media Player, MPC-HC, and most third-party media players play OGV files without issue.
How do I convert OGV to MP4?
Use our free converter to convert OGV files to MP4, WebM, or any other modern format for broader device and browser compatibility.