You can use either multibyte or unicode, so long as you have the same settings in both the base class project and the amcap project. Check unicode vs multibyte, and also check the settings for runtime (static or dll) wchar_t built in yes/no, calling convention etc. Make sure all these match.
AlexP from the nuigroup forums has got the Sony PS3 Eye working under windows. If you are looking for a cheaper alternative to 1394 Cams like FireflyMVs or Unibrain, you can try this one out. However, it still does not work with any OF apps but it does work in Windows Apps like MSN and Skype and even Amcap.
I think it is time to bite the bullet - next videoInput release will let you specify framerate. Not sure about adjusting it on the fly but you will be able to specify a desired framerate in the setup command. Not sure how that will integrate with ofVideoGrabber though as that would be windows only functionality for now - though a quicktime and possibly a v4l/unicap solution might exist also.
Sharpcap does not support any of the mallincam cameras rather it can receive the video usb driver data and preview that image. Control of the actual camera/ exposure and whatnot cannot and was never possible because mallincam video cameras were never ascom compliant. Nevertheless there is no problem with current version of sharpcap working with usb grabbers. I suspect given my own experiences in the last year or so that the culprit is most likely your usb grabber device itself. There are many reasons it may not be displaying an image. It could be that the output is hard set to s-video vs. composite or it could be and more likely is that you are using a windows 10 machine and the driver for your grabber is older windows xp/vista type. I have found very significant compatibility issues with drivers of older usb grabbers with windows 10.
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