A user has sent a question to Gabe Aul, a Microsoft’s manager, to ask if the Windows 10 for Phone will able to play mkv files like desktop version.
With the answer from Gabe Aul, the MKV support was added at platform level and will work for phones and PCs. That’s mean it has a same code for any version of Windows 10 like desktop, tablet or phone; and will appear in any device that run Windows 10.
@Eegore8a MKV support was added at platform level, so will work for phones and PCs (same code!) This is a big advantage of common platform.
— Gabriel Aul (@GabeAul) February 12, 2015