Basically, you want to give a different name to each one of your filters, right? This is done in the INF; you have to add a registry key somewhere in the SYSTEM/CurrentControlSet/Controls/MediaCategories section that defines the Name associated for your filter guids. Refer to the registry for examples. Mat -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Konrad Rozeslaniec Sent: Thursday, December 16, 2004 8:08 AM To: WDMAUDIODEV Subject: [wdmaudiodev] DirectShow identification- help I've got multiple pieces of hardware controlled by the same AVStream driver. They appear as DirectShow filters with names identical to device description in my inf file. How can I distinguish them and instantiate the right filter for chosen hardware??? best regards Konrad ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/ ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/