Capture Pin not working on all cameras

[EugeneQilo]

Hello @secile,
We deployed the latest version, and we have this observation. The Still Pin works on some Cameras but it doesn't on some other cameras. To be accurate, it was tested on 3 cameras, only 1 worked.

Could there be anything missed in the code? We have access to one of the cameras that didn't work, so if there is anything to check to troubleshoot this issue we will be happy to do.

[secile]

Thank you for your information.

Could you check camera.StillImageAvailable flag? If flag is false, the camera is not support still image capture.
Not all camera supports still imagecapture.

[EugeneQilo]

@secile that flag is false, but these are intraoral cameras used in dentistry and they have capture buttons. What else can I check for this?

[secile]

about line 276, does variable sample is null?

var sample = ConnectSampleGrabberAndRenderer(graph, builder, vcap_source, DirectShow.DsGuid.PIN_CATEGORY_STILL);

if sample is not null, about line 283,
does variable video_con is null?

var video_con = vcap_source as DirectShow.IAMVideoControl;