VideoStreamDescriptor 類別

  • 參考

定義

命名空間:
Windows.Media.Core
編輯

表示影片媒體串流的描述。

public ref class VideoStreamDescriptor sealed
public ref class VideoStreamDescriptor sealed : IMediaStreamDescriptor2
/// [Windows.Foundation.Metadata.Activatable(Windows.Media.Core.IVideoStreamDescriptorFactory, 65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class VideoStreamDescriptor final
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(Windows.Media.Core.IVideoStreamDescriptorFactory, 65536, "Windows.Foundation.UniversalApiContract")]
class VideoStreamDescriptor final
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(Windows.Media.Core.IVideoStreamDescriptorFactory, 65536, "Windows.Foundation.UniversalApiContract")]
class VideoStreamDescriptor final : IMediaStreamDescriptor2
[Windows.Foundation.Metadata.Activatable(typeof(Windows.Media.Core.IVideoStreamDescriptorFactory), 65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class VideoStreamDescriptor
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(typeof(Windows.Media.Core.IVideoStreamDescriptorFactory), 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class VideoStreamDescriptor
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(typeof(Windows.Media.Core.IVideoStreamDescriptorFactory), 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class VideoStreamDescriptor : IMediaStreamDescriptor2
function VideoStreamDescriptor(encodingProperties)
Public NotInheritable Class VideoStreamDescriptor
Public NotInheritable Class VideoStreamDescriptor
Implements IMediaStreamDescriptor2
繼承
Object Platform::Object IInspectable VideoStreamDescriptor
屬性
ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute
實作
IMediaStreamDescriptor IMediaStreamDescriptor2

Windows 需求

裝置系列
Windows 10 (已於 10.0.10240.0 引進)
API contract
Windows.Foundation.UniversalApiContract (已於 v1.0 引進)

備註

建立 MediaEncodingProfile時，請呼叫 SetVideoTracks，傳入一或多個 VideoStreamDescriptor 物件，以提供要編碼之視訊播放軌的相關資訊。

如需在 UWP 應用程式中使用媒體串流來源的範例，請參閱 MediaStreamSource 範例 。

版本歷程記錄

Windows 版本 SDK 版本 新增值
1709 16299 標籤
1803 17134 複製

建構函式

VideoStreamDescriptor(VideoEncodingProperties)

使用指定的VideoEncodingProperties建立VideoStreamDescriptor類別的實例。

屬性

EncodingProperties

取得物件，描述視訊資料流程的編碼屬性。 這些屬性包括視訊的解析度和畫面播放速率。
IsSelected

取得值，指出資料流程目前是否正由 MediaStreamSource使用。
Label

取得或設定應用程式定義的標籤，識別包含多個資料流程之 MediaEncodingProfile 中的視訊串流。
Language

取得或設定資料流程的 RFC-1766 語言代碼。
Name

取得或設定資料流程的名稱。

方法

Copy()

建立 Windows.Media.Core.VideoStreamDescriptor的複本。

適用於

另請參閱