Can't capture video using MediaCapture, but the CameraCaptureUI can capture video

Question

1. I try to use MediaCapture to capture with a Logitech C920 HD Pro Webcam but failed.

2. The code I use can work with an older Logitech Webcam.

3. I find I can use CameraCaptureUI to capture video with the new Logitech C920 HD Pro Webcam.

Here is my code:

Initialize:

        var captureInitSettings = new Windows.Media.Capture.MediaCaptureInitializationSettings();
        captureInitSettings.audioDeviceId = "";
        captureInitSettings.videoDeviceId = "";
        captureInitSettings.streamingCaptureMode = Windows.Media.Capture.StreamingCaptureMode.audioAndVideo;
        captureInitSettings.photoCaptureSource = Windows.Media.Capture.PhotoCaptureSource.videoPreview;

        mediaCaptureMgr = new Windows.Media.Capture.MediaCapture();
         mediaCaptureMgr.initializeAsync(captureInitSettings);

Start to capture:

encodingProfile = Windows.Media.MediaProperties.MediaEncodingProfile.createWmv(Windows.Media.MediaProperties.VideoEncodingQuality.hd720p);

proxyFolder.createFileAsync(videoFileName, Windows.Storage.CreationCollisionOption.generateUniqueName).then(
            function (newFile) {
            videoStorage = newFile;
            mediaCaptureMgr.startRecordToStorageFileAsync(encodingProfile, videoStorage).then(function (result) {
                startTimer();
            });
        });

When calling mediaCaptureMgr.startRecordToStorageFileAsync, it enters the fail callback function, the error is Unknown Runtime error.

Does anybody know how CameraCaptureUI work? Or is there anything wrong with my code?

Answer 1

Did you try this sample:

http://code.msdn.microsoft.com/windowsapps/Media-Capture-Sample-adf87622

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Jeff Sanders (MSFT)

Answer 2

The Meida Capture sample can't capture also.

But the CameraCaptureUI sample can capture video.

Answer 3

That is very strange.  Let me see if I can find some more information about how the Capture UI works and get back to you.  You said that it seems to be specific to this camera correct?

-Jeff

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Jeff Sanders (MSFT)

Answer 4

You said that it seems to be specific to this camera correct?

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Jeff Sanders (MSFT)

Answer 5

Hi all,

  I got the same problem. My camera is Logitech QuickCam Chat.

  The CameraCaptureUI sample works, but the Media Capture sample failed.

  Is there any update?  Thanks!

Chik

  

Answer 6

Hi Chik,

Is it possible for you to test with another camera and see if the problem only happens with this camera?

-Jeff

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Jeff Sanders (MSFT)

Answer 7

Hey all,

Please check to see if you are using the Microsoft in-box driver or the custom driver that shipped from the OEM. I have this same problem with an older MS camera. Switching to the Microsoft UVC driver should fix the problem. If you try this and are still having problems please let us know.

-James

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Windows Media SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/