Hello, my goal isn't to modify my actual miniport,I just want to develop un kernel streaming filter that can be included in the graph editor. For the moment,effects are rendered by software thanks to DirectShow dll's.What I want to do is to render effects by hardware. The card provides some effects that are not supported by identifers provided by Microsoft. Must I modify the miniport(DRIVER_SPECIFIC)?Or can I count on KS filters? Thanks in advance. Best regards. Bouayad-Agha Nassim. ****************** 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/