This is your workhorse. it provides a continuous stream of video frames, typically used for live previews.
Use a if you need to "grab" a specific frame from the stream. 53455028.jpg
to enable the Still Pin functionality.
Mastering USB Camera Grabs: Understanding Capture and Still Pins in DirectShow This is your workhorse
This pin is dedicated to "snapshots." It is often used to trigger a high-resolution frame that differs from the preview resolution. Rule #1: The Capture Pin Must Be Active 53455028.jpg
In DirectShow, a USB camera is represented as a "source filter." Most modern cameras provide at least two output "pins":