Directx 8(DirectShow ) and VB 6 Displaying Live Video

[aclayborne]

I'm trying to find a good example of how to Display live video using a USB 2.0 camera.
I need to learn how to
load the camera
display live video
freeze video
capture image
I know about various 3rd party tools that will do this for me, but I would like to achieve this through WDM.
And if possible what are the functions or purpose of filters, graphs, pins.

 

[markymsofth]

graphs are what you link together filters in
a graph.

A filter is a software component that performs some operation on a multimedia stream

pins are the connection points on a filter.
they may be a in or out pin.

filters can have many pins.

you may want to select a different video resolution or type on another pin for example

follows is a graph of filters for use with a webcam and live video.

VideoSourceFilter->SmartTee->Avi Decompressor->VideoWindow

follows is a graph to capture a bitmap from an avi

liz.avi->AVI Splitter->Avi Decompressor->Sample Grabber->VideoWindow

i write in c++, c++builder,delphi