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我正在尝试从外部 USB 摄像头（C#，Windows 8）捕获流。以下代码：

DeviceInformationCollection devInfoCollection = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
MediaCaptureInitializationSettings settings = new Windows.Media.Capture.MediaCaptureInitializationSettings();
settings.VideoDeviceId = devInfoCollection[0].Id;
mediaCaptureMgr = new MediaCapture();
await mediaCaptureMgr.InitializeAsync(settings);

在最后一行 (await mediaCaptureMgr.InitializeAsync(settings)) 被触发异常。变量设置不为空。设置：

(VideoDeviceId ="\\?\USB#VID_05E3&PID_0510&MI_00#7&2D043328&0&0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\GLOBAL")

异常文本：

Exception from HRESULT: 0xC00DABE8
Source  "mscorlib"

好的。我试图这样做：

try
{
   mediaCaptureMgr = new MediaCapture();
   await mediaCaptureMgr.InitializeAsync();
   myCaptureElement.Source = mediaCaptureMgr;
   await mediaCaptureMgr.StartPreviewAsync();

}
catch (Exception ee)
{
   String s = ee.ToString();
}

无论如何，在线上发生错误 (mediaCaptureMgr.InitializeAsync()) 在这种情况下：s="System.Exception: Exception from HRESULT: 0xC00DABE8\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\ n 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）\r\n 在 System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n 在 TestVideo.MainPage.d__0.MoveNext() 在 c:\Users \Admin\Documents\Visual Studio 2012\Projects\TestVideo\TestVideo\MainPage.xaml.cs:line 53"

异常相同：“HRESULT 异常：0xC00DABE8”

4

1 回答 1

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请根据要求设置为视频或音频，StreamingCaptureMode如 MediaCaptureInitializationSettings

settings.StreamingCaptureMode = settings.StreamingCaptureMode.Video;

我希望这能帮到您

于 2013-04-20T07:38:21.650 回答