Webcam is not showing any preview nor the webcam is opening

[shadowwalkersteam]

I'm getting issue with this library, the webcam is not opening nor I see any preview on the UI. Below are the debug logs.

INFO_LEVEL: ***** CAPTUREMANAGER SDK 1.19.1 Freeware - Sep 4 2021 (Author: Evgeny Pereguda) ***** INFO_LEVEL: MediaFoundationManager: Media Foundation is initialized!!! INFO_LEVEL: DMOManager: DMO is initialized!!! 2766 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - start 2778 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - start 2780 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2799 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFAudioFormat_Float 2813 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - ok 2814 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - ok 2814 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - start 2815 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - start 2815 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2817 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_YUY2 2841 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2843 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_YUY2 2843 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2844 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_YUY2 2844 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - ok 2845 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - ok 2845 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - start 2846 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - start 2846 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2847 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2847 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2848 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2848 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2849 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2849 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2850 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2850 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2852 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2852 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2853 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2853 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2854 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFVideoFormat_ARGB32 2855 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - ok 2855 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - ok 2856 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - start 2857 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - start 2857 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - start 2857 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse media type - correct - subtype = MFAudioFormat_Float 2858 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse stream descriptor - ok 2858 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse source - ok 2858 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Premature end of XML stream at root. Event type = 257 2864 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2865 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2871 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2871 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2871 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2871 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2872 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2872 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2872 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2873 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2873 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2873 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2874 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2874 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2875 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2875 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2876 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2876 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2876 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2876 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2877 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2877 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2877 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2877 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2878 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2878 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2878 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2878 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2879 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2879 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2879 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2879 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2880 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - start 2880 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - start 2880 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink value part - ok 2880 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Parse sink factory - ok 2881 [webcam-discovery-service] DEBUG com.github.eduramiba.webcamcapture.drivers.capturemanager.model.parser.CaptureManagerModelXMLParser - Premature end of XML stream at root. Event type = 257 2897 [Thread-8] INFO com.github.sarxos.webcam.WebcamDiscoveryService - Discovery will not run - driver CaptureManagerDriver does not support this feature Selected camera is: FaceTime HD Camera 2902 [Thread-9] INFO com.github.sarxos.webcam.WebcamDiscoveryService - Discovery will not run - driver CaptureManagerDriver does not support this feature 2903 [Thread-9] DEBUG com.github.sarxos.webcam.WebcamLock - Lock Webcam FaceTime HD Camera 2930 [atomic-processor-1] INFO com.github.sarxos.webcam.ds.cgt.WebcamOpenTask - Opening webcam FaceTime HD Camera 2949 [atomic-processor-1] INFO com.github.eduramiba.webcamcapture.drivers.capturemanager.CaptureManagerVideoDevice - Using video media type: CaptureManagerMediaType{width=1280, height=720, majorType=MFMediaType_Video, subType=MFVideoFormat_YUY2} 3001 [atomic-processor-1] ERROR com.github.eduramiba.webcamcapture.drivers.capturemanager.CaptureManagerFrameGrabberSession - Could not create session control last step 3002 [atomic-processor-1] ERROR com.github.eduramiba.webcamcapture.drivers.capturemanager.CaptureManagerFrameGrabberSession - Call init before start!! 3005 [Thread-9] DEBUG com.github.sarxos.webcam.Webcam - Webcam is now open FaceTime HD Camera

[shadowwalkersteam]

I think this error "Could not create session control last step" is causing issue may be. But I don't understand the reason why its throwing this error. Any one have idea about this?

[eduramiba]

@shadowwalkersteam Not sure what could be the reason. But please make sure your camera is not already in use by any other application.

[shadowwalkersteam]

@shadowwalkersteam Not sure what could be the reason. But please make sure your camera is not already in use by any other application.

no the camera is not in use by anyother app. the original java example of CaptureManager SDK working fine.

[shadowwalkersteam]

Do you have any idea what Dll’s are required by this media foundation based camera api? I’ve already added those dll’s but I suspect something is missing. I also added vcruntime dlls too.

[eduramiba]

Hi @shadowwalkersteam the DLLs were recently updated, can you try again?

[eduramiba]

Does it work now?