how to grab an image while grabbing to a file?

Sorry, I have been busy on another project in the meanwhile.

I tried the filter graph (Falcon filter - avi mux - file writer)

I got a 29 fps video...
seems that the driver is not working correctly

thx a lot

You can try using the "LEAD Video Frame Rate
Controller Filter (2.0)" which provides the ability to change the frame rate of the passing video stream.

You can find information on how to implement this filter in our Multimedia help files

mhm..this would rather lead into less performance...

anyway

is there a possibility to set the video capture size (like 768*576 for PAL) through the CaptureControl interface or any other LEADTOOLS API interface, or only through the capture device options menu provided by the manufacturer.

Theres a CaptureSizes property available, but its read only and the _enum property throws a "NotImplemented" Exception

thx

You cannot change the incoming size of the video data, you can only use what the device supports and thus the properties are read only.  You will have to use the Video Resize Filter in order to get a screen size that is not supported by your device.

Usually it takes a long time to start the capture process with captureCtrl.StartCapture().

I am using the callback filter already to store the images in an array of Rasterimages. Is it possible to write those images (on a callback event) directly into an avi file without using the "StartCapture" method?

I have already searched the help files and demos for examples, but found nothing.

No, you will need to start the capture process with the StartCapture Method.