MathewSachin/Captura

can't access webcams on surface pro 4 with captura

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#347 opened on Dec 16, 2018

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 (7 comments) (0 reactions) (0 assignees)C# (10,680 stars) (1,971 forks)batch import
bughelp wanted

Description

I already referenced issues #172 (I tried updating the drivers) above to no avail.

Here is what I get when I try to open captura:

System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component. at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo) at Captura.Webcam.CaptureWebcam.RenderGraph() at Captura.Webcam.CaptureWebcam.StartPreview() at Captura.WebcamControl.ShowOnMainWindow(Window MainWindow) at Captura.Models.WebCamProvider.set_SelectedCam(IWebcamItem value)

Thanks in advance.

Contributor guide

Tech stack
csharp
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
WindowsSurface Pro 4.NET Framework
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
The issue involves a COM exception (HRESULT E FAIL) when accessing webcam on a Surface Pro 4. Start by examining the webcam rendering code in Captura.Webcam.CaptureWebcam.RenderGraph() and the preview pipeline. Check if the issue is specific to Surface Pro 4 camera drivers or requires fallback to older DirectShow methods. Review any existing comments for attempted fixes and driver updates. Test with a different webcam to isolate hardware vs software problem.