mediacomposition_getthumbnailasync_1694609403.md

-api-id	-api-type
M:Windows.Media.Editing.MediaComposition.GetThumbnailAsync(Windows.Foundation.TimeSpan,System.Int32,System.Int32,Windows.Media.Editing.VideoFramePrecision)	winrt method

Windows.Media.Editing.MediaComposition.GetThumbnailAsync

-description

Asynchronously gets an image stream that represents a thumbnail of the media composition.

-parameters

-param timeFromStart

Specifies the point in the timeline of the MediaComposition from which to render the thumbnail, offset from the start of the MediaComposition.

-param scaledWidth

Specifies the target width at which to render. The default is 0. scaledWidth and/or scaledHeight can be optional; see Remarks.

-param scaledHeight

Specifies the target height at which to render. The default is 0. scaledWidth and/or scaledHeight can be optional; see Remarks.

-param framePrecision

Specifies the frame precision algorithm to use when retrieving the thumbnail.

-returns

An image stream representing resulting thumbnail.

-remarks

If scaledWidth and scaledHeight are both set, the aspect ratio of the original MediaComposition is ignored, and your values can alter the aspect ratio.

If either scaledWidth or scaledHeight but not both is specified, the value you provide controls that dimension but the aspect ratio is preserved (the other dimension is calculated based on factoring the original aspect ratio of the MediaComposition).

-examples

-see-also