MKV to MTS Converter

Convert MKV to MTS Online

Turn a Matroska (MKV) video into an MTS file — the AVCHD-style MPEG-2 transport stream that Sony and Panasonic camcorders record and that AVCHD-compatible TVs, Blu-ray players, and editing projects index by name. This is a re-encode: the video is transcoded to H.264 and the audio to AC-3 (or LPCM) and wrapped in the BDAV transport stream that the AVCHD ecosystem expects. If you just want a file that plays everywhere, convert MKV to MP4 instead — MTS is the right target only when something specifically wants an .mts stream.

How to Convert MKV to MTS

1. Upload Your MKV File: Drag and drop your .mkv onto the page or click "+ Add Files." You can queue several clips and convert them with the same settings.
2. Set the Video Codec and Quality Preset: Open Advanced Options. AVCHD targets expect H.264 video, so leave the codec on H.264 and use the Quality Preset (the default is Very High) — or switch to Constant Bitrate if a camcorder workflow needs a fixed rate.
3. Match the Resolution (Optional): Under Video resolution, choose Keep original or pick a Preset Resolution such as 1920×1080 or 1280×720 so the stream lines up with your AVCHD project. You can also Trim to a Time Range to export just part of the clip.
4. Convert and Download: Click "Convert" and download the .mts. No sign-up, no watermark.

MKV vs MTS at a Glance

Frequently Asked Questions

Is MTS the same as M2TS?

Functionally, yes — they are the same BDAV MPEG-2 transport stream carrying H.264 plus AC-3 or LPCM. The only difference is the filename. Camcorders write the legacy 8.3 spelling .mts directly to the memory card, and when you import the footage with software like Sony's PlayMemories Home it is typically renamed to the long-filename .m2ts. You can rename one to the other and the stream still plays. If your workflow specifically wants the long spelling, use convert MKV to M2TS — it produces the identical stream with the .m2ts extension.

Does converting MKV to MTS create a finished AVCHD or Blu-ray disc?

No. This tool produces a single .mts video stream, not a disc structure. A complete AVCHD or Blu-ray disc needs the BDMV/AVCHD folder layout, playlists, and index files that authoring software (such as Sony, Panasonic, or third-party disc-authoring tools) builds around your clips. Think of the .mts as the raw footage you then import into that authoring or editing project.

Will I lose quality converting MKV to MTS?

This is a re-encode, not a lossless remux, so the H.264 video is decoded and re-compressed — some generational loss is unavoidable. In our testing, exporting at the default Very High quality preset keeps the result visually close to the source for typical 1080p footage. If your MKV already holds H.264, keeping the resolution on "Keep original" and using a high quality preset minimizes the difference. The AVCHD specification itself caps video at roughly 24 Mbit/s (28 Mbit/s for AVCHD Progressive), so don't expect a higher bitrate than that to survive in players that strictly enforce the spec.

Why doesn't my MTS file play in a regular media player?

MTS is built for camcorders, TVs, and Blu-ray players rather than desktop browsers or basic phone players, so devices like iPhones or some web players may refuse it. VLC and most full media players handle .mts fine. If you need something that plays in any browser or messaging app without fuss, convert MKV to MP4 gives you a universally compatible H.264 MP4 instead.

What audio codec should I use for an MTS file?

Pick AC-3 (Dolby Digital) under the audio codec options for the broadest AVCHD-player compatibility — it is the codec the format was built around. Linear PCM is also valid AVCHD audio and is lossless, but it produces larger files. AAC will play in many software players but is outside the strict AVCHD audio set, so use AC-3 if the target is a camcorder ecosystem or an AVCHD-compatible TV.

How are my files handled after I convert them?

Your MKV is uploaded over an encrypted connection, transcoded on our servers, and the files are deleted automatically a few hours after conversion. There is no sign-up, no watermark, and nothing is shared or made public.