Easy Compress MKV Videos with Zero Quality Loss

Best MKV Video Compressor for Mac and Windows


Q1: MKV Compression to a smaller MKV or MP4: Hey... just wondered if an easy way (simple GUI program) that will compress an MKV file? I had a bunch of MKV files that are way bigger than need to be and would like to compress them down. I tried some video compressor but seems to encode for about 2sec, says complete and the files are no good, maybe 4kb in size. Are there any other programs that are simple to use? Like, open file, pick target size and save?”

Q2:Compress MKV without Video/Audio/Subtitle quality loss: I have about 200 GB of anime on my hard drive, each episode is usually about 300 MB - 600 MB. I would like to know if there is a way to compress ALL of these files without ANY quality loss in the Video, Audio, or Subtitle sectors of the MKV file. I DO NOT want to hardcode the subtitles and they are in a .ass/ssa format. About 90% of the anime are BDRips with 720p video. Thanks in advance for your help.”

It is known that MKV files always have big size, thus need to be compressed sometimes. In fact, there are three ways to achieve that goal.

Approach one: Compress MKV to smaller size by converting MKV to other video format like FLV, 3GP, AVI, MP4, etc.

Approach two: Compress MKV to smaller size by adjusting video bit rate, resolution, frame rate etc.

Approach three: Compress MKV with both approach one and approach two-converting video format and changing video bit rate, resolution, frame rate.

MKV Compressor for Mac and Windows

Avdshare Video Converter is the best MKV video compressor, shrinking the MKV files to a smaller size by converting MKV files to smaller video formats like AVI, MP4, 3GP, etc. and adjusting video bit rate, resolution, frame rate, etc.

After compression, the video quality, subtitles will never change.

This powerful MKV video compressor is also equipped with many video edition functions like trim and crop, merge or split, add watermark, add or delete subtitle, add special effects to the video image, etc.

Guide to Compress MKV Video with Avdshare Video Converter

Here is an elaborate guide on how to compress MKV video with Avdshare Video Converter (for Windows, for Mac).

Free download the best MKV video compressor, install and run it, the following interface will pop up.


Step 1 Add MKV videos

Click “Add File” button to import MKV file from your pc, or simply drag and drop the file directly to this free app. You can batch import multiple MKV video at one time.


Step 2 Three methods to compress MKV file size

Method One: Decrease Video Size
Click "Setting" button -> "Advanced Setting" tab -> "Advanced" option. Select desired video size from the drop-down list of "Video Size". It also allows overwriting any desired video size.

Method Two: Adjust Video Bitrate
Click "Setting" button of Avdshare Video Compressor to "Advanced Setting" tab. In this tab, click "Advanced" option. Choose the parameter from the drop-down list of the right side of "Bitrate" or just enter parameter as your need. Then click "Apply To All" and "OK". Finally click "Convert" button to compress video.


Method Three: Convert Video to H.264 MP4
Click the drop-down button of "Profile" to select "H.264/MPEG-4 AVC Video (*mp4)" as the output video format.

Step 3 Start MKV compression

Click the BIG ROUND button at the right bottom side to begin MKV video compression. After a little while, you will get the compressed MKV videos.