How to convert MKV to OGV
To convert MKV to OGV, upload your MKV file, choose OGV as the output format and press Convert. The finished OGV file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns MKV videos into OGV files in your browser, with no software to install and no watermark. When the video and audio inside your MKV file can be placed in OGV as they are, the streams are copied without re-encoding, which is faster and keeps the original quality. Otherwise the video is re-encoded as Theora video with Vorbis audio.
Why convert MKV to OGV?
- Completely open and royalty-free
- Works in Firefox and Chrome
- Supported by free-software tools
- Plays on: Firefox, Chrome, VLC and Linux players; not supported on iOS
What to expect from this conversion
- Expect a larger file than the MKV original, because OGV is a less efficient format for the same quality.
- OGV output uses Theora, an open codec that is less efficient than H.264 or VP9, so files are bigger for the same quality.
- The first audio track is kept. Subtitle tracks, extra audio tracks and chapters are not included in the converted file.
MKV vs OGV
| Property | MKV | OGV |
|---|---|---|
| Full name | Matroska Video | Ogg Video |
| Released | 2002, Matroska.org (open standard) | 2004, Xiph.Org Foundation |
| Generation | Modern | Niche |
| Typical file size | Small | Medium |
| Plays on | VLC, Plex, Kodi, most Android players and modern Windows; limited on iOS and older TVs | Firefox, Chrome, VLC and Linux players; not supported on iOS |
| Best for | movie and TV archives with multiple languages; keeping subtitles inside the file | open-source and Linux projects; Wikimedia-style free media |
Steps to convert MKV to OGV
- Drop your MKV video file onto the converter, or click to choose it.
- Check that OGV is selected as the target and adjust the options if you want.
- Press Convert, then download your new OGV file when it finishes.
Tips for the best result
- Leave Fast mode on to keep the original quality whenever the streams can be copied.
- Pick a lower resolution if the file is for a phone or messaging app.
- Use Mute if you only need the picture.
Frequently asked questions
How do I convert MKV to OGV?
Upload your MKV file, make sure OGV is the selected target and press Convert. When the progress bar finishes, download the OGV file. No account or software is needed.
Is the MKV to OGV converter free?
Yes. It is free, with no watermark, no sign-up and no daily limit on how many files you convert. The site is supported by ads.
Will I lose quality when converting MKV to OGV?
Not necessarily. If the video and audio streams already fit inside OGV, they are copied without re-encoding, so quality stays identical. If the file has to be re-encoded, the High setting keeps almost all visible detail, while Small trades some detail for a smaller file.
Why is my OGV file larger than the MKV original?
Expect a larger file than the MKV original, because OGV is a less efficient format for the same quality. Choosing a lower quality or resolution reduces the size further.
Which devices can play OGV files?
OGV files play on Firefox, Chrome, VLC and Linux players; not supported on iOS.
How large a file can I upload?
You can upload videos up to 500 MB. Files are deleted from the server about 30 minutes after conversion.