How to Compress MKV Files with Lossless Quality in Mac/Win (Windows 10 included)

Nowadays, movies or TV shows streamed over the internet are increasingly seen in .MKV extensions, particularly for high-definition sources (1080p). But its flat body may cause trouble when viewing it back. Maybe your old CPU is impossible to watch such HD 1080p movies/videos. Or your portable gadget like HTC, Samsung Galaxy, etc has limited space to store them. Normally, you'll try some compression programs for emails or pictures like 7-zip, Xarchiver, WinRAR, WinZip etc. However, MKV file format is already highly compressed and will not benefit from further compression. What to do?

Actually, all you need this stylish and intuitive MKV compressor- Wondershare Video Converter (Video Converter for Mac). It helps to cut down video size greatly and quickly by adjusting the encoder, bit rate, resolution, frame rate, etc and getting rid of  the unwanted part. Follow step-by-step guide and compress your MKV files with no hassle.

Best MKV Compressor for Windows / Mac (Yosemite included)

wondershare video converter
  • Easily compress MKV video without any quality loss.
  • Change the video settings of your need.
  • Provides classic editing features to personalize your videos.
  • Superior conversion speed than other converters on the market.
  • Supported OS: Windows 10/8/7/XP/Vista, Mac OS X 10.6, 10.7 10.8, 10.9

1.Add MKV files to this MKV compressor

Drag your video's icon from the desktop or folder into the program. Or click "Add Files" icon to locate your destination file from hard disk or U disk (Note: batch conversion supported, you can load a couple of MKV files to ease compression and save time).

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compress mkv video

2.Customize setting for the output

Click gear-like option at the bottom of the primary window to open setting window. Here, you can adjust the parameters for both video and audio.

Encoder: Click arrow to access drop down options, then choose one, or just let it as defaulted.
Resolution: 320*240,480*272,480*368,640*480, and more. If you want to play on iPod, iPhone 4/iPhone 4S, PSP (including PSP3), 480*272 works great.
Frame Rate: You can choose from different values to slow down or speed up your playing speed. Generally, value above 20 makes little difference.
Bit Rate: Value range: 256kbps to 2000kbps, choose a proper one as per your needs.

To save your time, this program also provides three quality mode to select from. In most cases, you can just choose "Small Size" to compress your MKV files and let everything smart fit.

compress mkv video

3. Start MKV compression

When all settings and modifications are completed, click Convert button to activate compression. This program is very efficient in conversion and the progress bar will show the percentage and remaining time.

compress mkv video

Video tutorial: How to Compress MKV Video Files

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Product-related questions? Speak directly to our Support Team >>

You're welcome. Hope it works. If any question, please let me know. Best regards,
i ripped some blu rays with DVDFab, about 30GB .mkv files. Now i need to losslessly compress them in 1080p. I hope this helps! Thanks Liza! An alternative method might be using makemkv then ripbot.
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