On Oct 24, 2005, at 7:50 PM, Alex Majora wrote: I have a couple of Firewire IIDC video cameras that I need to operate in format 7 mode 0 for full-res 12-bit YUV 411 video (otherwise they put out a low-res monochrome video stream). And, they use a Bayer filter array (not sure which one yet).
What is the modern QT approach to programmatically opening a camera in a specific format/mode?
There is not an explicit API for setting a camera's format/mode with the QuickTimeIIDCDigitizer.component. Rather, the digitizer queries the camera for to see if it has any of the pixel formats it supports (YUV 4:2:2 - 8bit/component, (and the YUV 4:1:1 12bit/pixel will be internally upscaled to this prior to handing back to a client), RGB/Mono - 8bit/component), and attempts to make it best match of the camera settings to how the SequenceGrabber is configured.
It can vary slightly based on the camera's abilities, but in general if you want the camera to generate a particular format/mode set the compression type (to get the camera's 4:1:1 format select "Component Video - CCIR-601 uyvy" in the SGSettingsDialog()), and set the channel bounds to the frame size for the desired format.
Is there any QT accommodation for Bayer?
The QuickTimeIIDCDigitizer.component currently only supports the pixel formats mentioned above. | 
