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Hello,

I recently updated my xbian to the lastest XBian 1.0 Alpha 3, but when i want to play an .mkv file from my server i only hear sound the screen is black.
A stream from UZG addons works smoothly, i added my codecs to config.txt. Is there anyone who has the same problem to.

Greetz!

can you post more details about the files what having an issues with ? mkv is just container info but would be helpfull if you can provide more details like codec, audio/video information, etc
in the meantime you can try change the RAM split from 100 to 128
so do the following from SSH

and change the following
to

or if you have Raspberry Pi V2 with 512mb RAM

to

You might check if your license keys are valid and enable the hardware support. Try the following

this would not be the licence issue as mkv is mentioned.
I have experienced exactly same issue and after I did change mem split all is fixed

@jackult, you need to supply more information about the files you are trying to play. If you are running Windows, you could try using the MediaTab program discussed in this article:

http://lifehacker.com/5825903/mediatab-puts-detailed-multimedia-info-in-a-windows-explorer-properties-tab