MX Player the video player for Android that will play just about any video file you can throw at it including MKV files has been updated and now includes https support, has an improved hardware decoder and fixes for decoder issues with Snapdragon devices.
The app is free (ad supported) and available from Google Play
What’s in this version:
Added screen rotation button.
Added a new orientation option named “use video orientation”. This will select screen orientation from video orientation.
Added https protocol support on s/w decoder.
Added an optional to disable double tap gesture.
Improved h/w+ decoder.
Fixed broken h/w+ decoder on Android 3.x Honeycomb and some Snapdragon ICS, Jellybean devices.