Can TWAIN be used to download photographs from cameras, capture video frames, or whole movie clips?
A. Movies and video streams: No. TWAIN deals only with still images, TWAIN doesn’t do movies. Photos and frame grabs: Yes, sort of. Any camera or webcam that appears in the WIA device list (the ‘Scanners and Cameras’ folder) will also appear as a TWAIN device. Some cameras even have native TWAIN drivers. These drivers are designed for user interaction, the application has minimal control over the process.