MTS to MKV - Online Video Converter
Convert MTS to MKV online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About MTS to MKV
Convert MTS to MKV. MTS is the AVCHD camcorder wrapper for H.264 on flash media. 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 MTS to MKV?
- Smaller files with MKV lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MTS vs MKV
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | Yes |
| Compression | lossy | lossy |
| Typical use | MTS is the AVCHD camcorder wrapper for H.264 on flash media. | MKV is an open container holding multiple video, audio, and subtitle tracks. |
When not to convert MTS to MKV
- Skip MKV for archival masters: lossy compression discards detail, so keep the MTS original.
- Keep a master copy: repeated exports stack small losses, so archive MTS before batch MKV shares.
Limits
Starting point: MTS - MTS is the AVCHD camcorder wrapper for H.264 on flash media. Spanned clips split at 4 GB; join them before converting. Only the selected tracks carry over, so pick audio and subtitles first. Encode MKV (H.264 / AAC) from MTS 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.