M2TS to MKV converter
Convert M2TS to MKV in seconds, free and unlimited. No upload, no sign-up, no watermark: your video never leaves your device.
Last updated
Quick answer: To convert M2TS to MKV, add the M2TS file to the iHateFiles M2TS to MKV converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. Re-encodes the picture and sound into a MKV container.
Should you convert M2TS to MKV?
Do this when something specifically needs MKV. The picture is re-encoded, so it costs a little quality; if all you need is a file that plays everywhere, MP4 is usually the better target.
The picture is re-encoded
An M2TS usually holds AVCHD or Blu-ray video: H.264 with Dolby Digital or PCM sound. This writes H.264 video with AAC sound into the MKV. Both sides are compressed with loss, so this is a second generation: leave the quality at its default or higher, because the encoder is working from M2TS artefacts rather than the original.
Watch for interlacing
M2TS video from a DVD, camcorder or broadcast is often interlaced, which shows up in the MKV as comb-like tearing on anything that moves. Restore Old Video removes it and can write the MKV in the same pass.
Where the MKV will play
MKV plays on VLC, Plex, most smart TVs and Android, but not the iPhone Photos app or QuickTime.
M2TS and MKV side by side
| M2TS | MKV | |
|---|---|---|
| Inside the file | AVCHD or Blu-ray video: H.264 with Dolby Digital or PCM sound | H.264 video with AAC sound |
| Compression | Lossy | Lossy |
| Carries sound | Yes | Yes |
| Plays on | VLC, most smart TVs and video editors, but not phones or QuickTime | VLC, Plex, most smart TVs and Android, but not the iPhone Photos app or QuickTime |
| Here | Read only | Read and write |
What usually goes wrong
About the M2TS. TS files from a recorder often contain several programmes or several audio tracks at once, so a converter may pick a different one than you expected.
About the MKV. MKV and WEBM share a signature because WEBM is a restricted Matroska, so tools sometimes report one as the other. What matters is the codecs inside.
How to convert M2TS to MKV
- Add your M2TS file. It is read from your disk and stays there.
- Check the settings. The output format is already set to MKV.
- Press convert and the MKV file is saved back to your device.
Questions
How do I convert M2TS to MKV?
Open this page, add your M2TS file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this M2TS to MKV converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to MKV lose quality?
MKV is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several M2TS files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.