Our IMAQdx driver is capable in changing settings of USB cameras, which are provided through DirectShow. So if it's not settable in MAX, it's simply not available through DirectShow.
Does Winnov provide a tool to change the settings of the camera?
You could also contact firstname.lastname@example.org
Well, unlike using Firewire and Gigabit Ethernet cameras which have standards like GeniCam or GigEVision, there is no standard for USB image acquisition right now. That's why we use DirectShow as common interface for USB cameras. There are efforts to create a standard for USB cameras too but there are not very much big vendors right now to promote it. Most of the big and well known vendors choose GigE, and the difference in pricing between USB and GigE is not that much anymore.
@TIS Stefan wrote:
Hi Using USB cameras with WDM DirectShow drivers in MAX does not allow to set frame rates. Only one frame rate is given, e.g. 30 fps. Worse: 60 fps is possible with the specific camera, but can not be set in MAX. Also if it is not possible to set frame rates, it is not possible to run two cameras in parallel on one USB controller, because the bandwidth exceeds. Is there a solution? Stefan
IMAQdx supports changing the framerate if the camera driver implements it in the standard DirectShow mechanism. The way it is defined, the camera provides a list of video modes that each include an image format, an image size, and a range of possible frame rates. IMAQdx enumerates these and expands out the possible combinations as different video modes available. You should see these available as a Video Mode drop-down box on the Acquisition tab in MAX. You can also of course access these programatically via the API in LabVIEW.