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M2TS to MKV - Online Video Converter
Convert M2TS to MKV online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert M2TS to MKV
Drop M2TS video here or click to select
M2TS, MTS
MKV (H.264 / AAC)
About M2TS to MKV
M2TS carries Blu-ray H.264 with extra audio, so MKV keeps the chosen tracks together.
Why convert M2TS to MKV?
- Smaller files with MKV lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
M2TS vs MKV
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | Yes |
| Compression | lossy | lossy |
| Typical use | M2TS is the Blu-ray transport stream carrying H.264 with PCM or DTS audio. | MKV is an open container holding multiple video, audio, and subtitle tracks. |
When not to convert M2TS to MKV
- Skip MKV for archival masters: lossy compression discards detail, so keep the M2TS original.
- Keep a master copy: repeated exports stack small losses, so archive M2TS before batch MKV shares.
Limits
Starting point: M2TS - M2TS is the Blu-ray transport stream carrying H.264 with PCM or DTS audio. High-bitrate files take longer; confirm audio track selection first. Only the selected tracks carry over, so pick audio and subtitles first. Encode MKV (H.264 / AAC) from M2TS 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.
Related conversions
FAQ
How do I convert M2TS to MKV?
Drop your M2TS file onto this page, choose quality and codec settings, then click Convert. The result downloads as MKV instantly. All processing runs in your browser.
What codec is used for MKV?
The default codec for MKV is H.264 / AAC. You can change the video and audio codec in Advanced mode.
Does M2TS to MKV keep subtitles?
Selected tracks carry over, so pick audio and subtitle streams first.
Is M2TS to MKV lossless?
With stream copy it can be; re-encoding costs some detail.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.