MediaCapture class

Captures photos, audio recordings and videos.

Syntax

public sealed class MediaCapture : Object

Attributes

ActivatableAttribute(NTDDI_WIN8)

DualApiPartitionAttribute()

MarshalingBehaviorAttribute(Standard)

ThreadingAttribute(MTA)

VersionAttribute(NTDDI_WIN8)

Members

The MediaCapture class has these types of members:

• Constructors
• Events
• Methods
• Properties

Constructors

The MediaCapture class has these constructors.

Events

The MediaCapture class has these events.

Methods

The MediaCapture class has these methods. With C#, Visual Basic, and C++, it also inherits methods from the Object class.

Properties

The MediaCapture class has these properties.

Remarks

In apps that use C# or C++ in Windows 8, the first use of the MediaCapture object to call InitializeAsync should be on the STA thread. Calls from an MTA thread may result in undefined behavior.

InitializeAsync will launch a consent prompt to get the user's permission for the app to access the microphone or camera. InitializeAsync should be called from the main UI thread of your app. For more information, see Guidelines for enabling sensitive devices.

If an app is previewing and it goes into a non-visible state, previewing should be stopped. If the app reenters a visible state, the MediaCapture needs to be recreated.

MediaCapture only supports one pass CBR encoding.

Notes on JPEG: JPEG types are passthrough only. To capture an image, the image encoding profile can be set to Auto or you need to specify an encoding profile that matches the native type. To add an effect, you need to switch to an uncompressed video native media type, such as NV12 or RGB32.

Notes on H.264: If the native type is H.264, you can record using a video media type with type identical to the native type. You cannot add an effect to an H.264 native type stream. To capture video, the image encoding profile can be set to Auto or you need to specify an encoding profile that matches the native type.

Note  : This class is not agile, which means that you need to consider its threading model and marshaling behavior. For more info, see Threading and Marshaling (C++/CX) and Using Windows Runtime objects in a multithreaded environment (.NET).

Examples

The following code sample shows how to create and initialize a MediaCapture object.

// Create and initialze the MediaCapture object.
function initMediaCapture() {
    oMediaCapture = null;
    oMediaCapture = new Windows.Media.Capture.MediaCapture();
    oMediaCapture.initializeAsync(captureInitSettings).then (function (result) {
       createProfile();
    }, errorHandler);    
}

See the Media Capture Sample for an example of using media capture.

If you’d like to try working with media capture and other key Windows 8 features, download the hands-on labs for Windows 8. These labs provide a modular, step-by-step introduction to creating a sample Windows Store app in the programming language of your choice (JavaScript and HTML or C# and XAML).

Requirements

See also

Guidelines for enabling sensitive devices

Roadmaps

Adding multimedia to Windows Store apps using C++, C#, or Visual Basic

Adding multimedia to Windows Store apps using JavaScript

Samples

Media capture sample

Camera capture UI sample

Camera options UI sample

Device enumeration sample

Real-Time communication sample

Media extension sample

Hands-on labs for Windows 8

Other resources

Supported audio and video formats

Build date: 12/4/2012