To: uq91
Hello,
First of all please make sure that your mkv are not broken and play without defects in video player software.
If it is not the case, we need your files to solve the problem.
Please upload them to our ftp-server, the instructions will be given to your in our
support system. The password to log into it will be sent to your e-mail address.
Also, please specify your PC configuration (Operating system, CPU, Ram).
Best regards.