问题
I have filters in Graphedit whose settings can be changed.
I have a usb webcam which i can go to its properties and make it stream at different sizes, but im not sure how i would change these types of options programmatically without popping up the actual webcam property box. I want to keep it stream lined in a sense.
.QueryFilterInfo()
didn't give me any access to those types of options, and neither did
.QueryPinInfo()
Is there a way to get access to these options in C#?
Update: http://sourceforge.net/projects/directshownet/forums/forum/460697/topic/1319584
shows you how to correctly use GetStreamCaps
回答1:
The interface you're looking for is IAMStreamConfig on the source filter's output pin This lets you specify fps and height and width, etc. Even though the link is for the c++ version, IAMStreamConfig is available in C# as it is listed here.
来源：https://stackoverflow.com/questions/6471999/how-can-i-programmatically-set-a-directshow-filters-options