Things You'll Need
Instructions
Download the PS3 Media Server for your operating system from Code.google.com/p/ps3mediaserver. Install the program: In Windows, run the executable file; in Linux, extract the contents and run the "PMS.sh" file; and in OS X, mount the DMG file and extract the files.
Turn on your PlayStation 3. If you haven't enabled media server support already, go to Settings > Network Settings > Media Server Connection.
Run the PS3 Media Server on the same computer as the MKV files that you want stream to your console. After a moment, the server should find your PlayStation 3. If it doesn't, go to Video > Search for Media Servers. When found, PMS will display an image of a PlayStation 3 console with the status update, "PS3 Has Been Found!"
Select the media server under "Video" on the PS3. It displays the name "PS3 Media Server" with the computer name beside it in brackets. Navigate to the folder where your video files are located and select the MKV file you want to play.
Wait a moment; the screen will remain black momentarily before the video begins playback. Ensure that your computer will not go into sleep mode or disconnect from the network while your video is streaming; disconnection will stop your video playback.