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How to Compress & Convert HD M2TS to MKV without Quality Loss?

Converting M2TS to MKV format can be beneficial in plain sight. Firstly, a full movie in .m2ts takes a lot of memory storage, with a file size ranging from 40 to 50GB. But the M2TS file will be shrunk to 10GB when converted to MKV format partially because it keeps the desired part but removes the redundant tracks. This is especially desirable if you want to save more space. In the meantime, AVCHD camcorders from Sony, Panasonic, Canon and more store recordings in .m2ts, which is troublesome if you need to upload these shootings to YouTube or other sites. But to convert M2TS to MKV format will ensure a fast uploading. Last but not least, MKV manages to keep the video and audio tracks, subtitles and menu of M2TS file ripped off from Blu-ray Disc into a single file without discarding any part, a perfect companion for movie backup.


But things won't go as expected. The conversion from M2TS/MTS to MKV usually leads to quality degradation as below:

Q: I have a M2TS file of a movie that I want to convert into MKV so that I can remove all unnecessary audio & subtitle tracks, but how do I go about to make this conversion? It`s very important that there is no quality loss whatsoever. Is it possible to do?

A: You will definitely lose some quality on a re-encode. The question is how much quality will a video converter preserve during the conversion. Most times you can reduce the size to about 1/4 of the original size but unfortunately experience noticeable loss of quality with general video converter software such as Handbrake. In response to the demand of high-quality conversion from .M2TS to .MKV, here in this guide we will walk you through the complete guide to convert M2TS to MKV with smaller file size yet minimal quality loss with the best M2TS to MKV converter.

Recommended Tool to Encode/Decode M2TS to MKV without Quality Loss

The tool to accomplish the M2TS HD videos to MKV converting task that deserves your attention is MacX Video Converter Pro . Armed with Deinterlacing and high-quality engine, it's the perfect the video converter for Mac and Windows users to compress the large size HD TS/MTS/M2TS video files to MKV (H.264 recommended to retain the highest possible quality) without any noticeable quality degradation. The built-in 320 video codecs including MKV codec make it easy to transcode any video files, such as M2TS to MP4, AVI to MKV, MKV to MOV, YouTube to MP3, etc in a snap. You can free download it now and follow the specific guide to convert video from HD M2TS/MTS to MKV format.

How to Convert M2TS to MKV Video Format with Optimal Output Quality?

Thanks to the tiny file size, you can get it launched within a few seconds. Both Mac and Windows versions supporting the latest OS, including macOS High Sierra and Windows 10, are available for free download.

Free download the converter on Mac
Free download the converter on Windows

Step 1: Import M2TS video
Click +Video button to load M2TS video to be converted into MKV.

Step 2: Choose MKV as the Output Format
Go to Matroska Video from the PC General Video category. The program is equipped with 400+ optimized profiles for the latest devices. You are free of converting M2TS or any other files to iPhone X, iPhone 8, Samsung Galaxy S8, and more directly without tweaking the parameter settings.

Step 3: Begin M2TS to MKV Conversion
Click Browse button to set the output folder and click RUN to begin the transcoding from M2TS format to MKV.

convert M2TS to MKV

Warm Tips:
1. MacX Video Converter Pro allows you to select the language track you prefer and even add subtitles to MKV thanks to its built-in video editor feature.
2. For the highest possible quality, we recommend you to convert MKV in H.264 codec as it is a very efficient codec that you can minimize quality loss while still getting a much smaller file.
3. Check Deinterlacing and High Quality Engine boxes to ensure the maximal quality reservation and make the output video with deinterlaced scanning instead of interlaced one.

Basic Knowledge for M2TS and MKV

Format M2TS MKV
Category Video File Video File


.m2ts is a filename extension used for the blu-ray disc audio-video MPEG-2 transport stream container file format. The container format is commonly used for high definition video on Blu-ray Disc and AVCHD.

MKV is an open source multimedia container used for holding multiple audio/video tracks, subtitles, images into a single file, which makes it good for movie and TV shows storage. The WebM video is based on MKV compression, which makes it easy to download or upload MKV on web.

Developed by

Blu-ray Disc Association


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author- candice
Candice Liu

Candice's particularly skilled in writing and sharing video-related contents. Her guides cover from deep-seated video/audio parameters, to media entertainment on different platforms. She also enjoys shooting and processing videos by herself for a more reliable basis of informative info with her articles, which are never at the expense of eliminating an entertaining read.