OGV to MKV - Online Video Converter
Convert OGV to MKV online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About OGV to MKV
Convert OGV to MKV. OGV carries Theora video with Vorbis audio in an Ogg container. MKV is an open container holding multiple video, audio, and subtitle tracks. Only the selected tracks carry over, so pick audio and subtitles first..
Why convert OGV to MKV?
- Smaller files with MKV lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
OGV vs MKV
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | Yes |
| Compression | lossy | lossy |
| Typical use | OGV carries Theora video with Vorbis audio in an Ogg container. | MKV is an open container holding multiple video, audio, and subtitle tracks. |
When not to convert OGV to MKV
- Skip MKV for archival masters: lossy compression discards detail, so keep the OGV original.
- Keep a master copy: repeated exports stack small losses, so archive OGV before batch MKV shares.
Limits
Starting point: OGV - OGV carries Theora video with Vorbis audio in an Ogg container. Hardware support is thin, so convert for phones and editors. Only the selected tracks carry over, so pick audio and subtitles first. Encode MKV (H.264 / AAC) from OGV 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.