AVAssetImageGenerator.RequestedTimeToleranceBefore 属性

定义

时间范围的开始时间,该时间范围围绕可能为其生成图像的请求时间。

public virtual CoreMedia.CMTime RequestedTimeToleranceBefore { [Foundation.Export("requestedTimeToleranceBefore", ObjCRuntime.ArgumentSemantic.UnsafeUnretained)] get; [Foundation.Export("setRequestedTimeToleranceBefore:", ObjCRuntime.ArgumentSemantic.UnsafeUnretained)] set; }
member this.RequestedTimeToleranceBefore : CoreMedia.CMTime with get, set

属性值

属性

适用于