Post Fri Nov 07, 2014 2:35 pm

cannot play certain mp4 files

My cable provider box (fiberbox) has media stream feature. I connect to my PC (windows) seviio and watch videos( including mp4). However, several recent videos are not played (mp4). I can watch these from my PC.
Questions:
1. How do i tell what is the difference between the playable and not playable files?
2. How do I fix this? I read there is profiles.XML but I don't know how to edit it and how to choose the profile number which is currently active.
Thanks!
HS