The capturecardsdefinitions.xml is in the user files, open MP config and there is a button topleft that will take you too it.
This is only used for MP's built in TVEngine (technically obsolete), NOT TVServer which should auto detect your card, if you cannot tune then you are missing something, check here GeneralRequirements - MediaPortal Manual Documentation
This is only used for MP's built in TVEngine (technically obsolete), NOT TVServer which should auto detect your card, if you cannot tune then you are missing something, check here GeneralRequirements - MediaPortal Manual Documentation
United Kingdom