• Step 1. Download MKV to AVI Converter and install it to your computer. The size of this programm is very small.
• Step 2. Launch the icon on the desk, then you will see this interface.

  

• Step 3. Then, click "Open Video" to select an mkv file. The default output duration is whole time of the clip. You can drag the slider bar, set the Start Time and the End Time to get the part of the clip.

  

• Step 4. Click the Convert button to output video file.

Part 2: Play the output file with PowerDVD.

• Step 1. Download PowerDVD and install it.

  

• Step 2. See the details of the important buttons.

  

  Button/Icon	Description
  A Stop	Stops playback
  B Play	Plays media
  C Pause	Pauses playback
  F Menu	Accesses all available DVD menus
  O Select source	Selects media source forplayback

More Info: What is a .mkv file?

A .mkv file is a Matroska video/audio multimedia file. It is a container like MOV and AVI, providing support for a huge number of different video, audio and subtitles compression formats. It is not really intended for media content distribution on a large scale, but is achieving it anyway.

This is partly due to its incredible support for several subtitle formats including SRT, SSA and USF text subtitles, or VobSub streams coming directly from the DVD. The team is also currently working on a DVD-like menu structure for the format.