VideoStreamDescriptor Kelas

Referensi

Definisi

Ruang nama:: Windows.Media.Core

Penting

Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.

Edit

Mewakili deskripsi aliran media video.

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

Warisan: Object Platform::Object IInspectable VideoStreamDescriptor

Atribut: ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Penerapan: IMediaStreamDescriptor IMediaStreamDescriptor2

Persyaratan Windows

Rangkaian perangkat	Windows 10 (diperkenalkan dalam 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (diperkenalkan dalam v1.0)

Keterangan

Saat membuat MediaEncodingProfile, panggil SetVideoTracks, meneruskan satu atau beberapa objek VideoStreamDescriptor untuk memberikan informasi tentang trek video yang akan dikodekan.

Lihat Sampel MediaStreamSource untuk contoh penggunaan Sumber Aliran Media di aplikasi UWP.

Riwayat versi

Versi Windows	Versi SDK	Nilai ditambahkan
1709	16299	Label
1803	17134	Menyalin

Konstruktor

VideoStreamDescriptor(VideoEncodingProperties)

Membuat instans kelas VideoStreamDescriptor menggunakan VideoEncodingProperties yang ditentukan.

Properti

EncodingProperties	Mendapatkan objek yang menjelaskan properti pengodean untuk streaming video. Properti ini mencakup resolusi dan kecepatan bingkai video.
IsSelected	Mendapatkan nilai yang menunjukkan apakah aliran saat ini sedang digunakan oleh MediaStreamSource.
Label	Mendapatkan atau mengatur label yang ditentukan aplikasi yang mengidentifikasi aliran video di MediaEncodingProfile yang berisi beberapa aliran.
Language	Mendapatkan atau mengatur kode bahasa RFC-1766 untuk aliran.
Name	Mendapatkan atau mengatur nama aliran.

Metode

Copy()

Membuat salinan Windows.Media.Core.VideoStreamDescriptor.

Berlaku untuk

Bagikan melalui