# API 列表 (/zh-CN/api-reference/rtc/unreal-blueprint/rtc-interface-class) > For AI agents: see the complete documentation index at [llms.txt](/llms.txt). ## IAudioDeviceCollection [#iaudiodevicecollection] IAudioDeviceCollection 类。你可以通过该接口类获取音频设备相关的信息。 ### 相关参考 [#相关参考] - [GetApplicationVolume](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_getapplicationvolume) - [GetCount](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_getcount) - [GetDefaultDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_getdefaultdevice) - [GetDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_getdevice) - [IsApplicationMute](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_isapplicationmute) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_release) - [SetApplicationMute](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_setapplicationmute) - [SetApplicationVolume](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_setapplicationvolume) - [SetDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicecollection_setdevice) ## IAudioDeviceManager [#iaudiodevicemanager] 音频设备管理方法。 ### 详情 [#详情] IAudioDeviceManager 接口类提供用于测试音频设备的相关接口。你可以通过调用 [GetAgoraAudioDeviceManager](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_irtcengine_getaudiodevicemanager) 方法来获取 IAudioDeviceManager 接口。 ### 相关参考 [#相关参考-1] - [EnumeratePlaybackDevices](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_enumerateplaybackdevices) - [EnumerateRecordingDevices](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_enumeraterecordingdevices) - [FollowSystemPlaybackDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_followsystemplaybackdevice) - [FollowSystemRecordingDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_followsystemrecordingdevice) - [GetPlaybackDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getplaybackdevice) - [GetPlaybackDeviceInfo](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getplaybackdeviceinfo2) - [GetPlaybackDeviceMute](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getplaybackdevicemute) - [GetRecordingDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getrecordingdevice) - [GetRecordingDeviceInfo](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getrecordingdeviceinfo2) - [GetRecordingDeviceMute](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getrecordingdevicemute) - [GetRecordingDeviceVolume](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_getrecordingdevicevolume) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_release) - [SetPlaybackDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_setplaybackdevice) - [SetPlaybackDeviceMute](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_setplaybackdevicemute) - [SetPlaybackDeviceVolume](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_setplaybackdevicevolume) - [SetRecordingDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_setrecordingdevice) - [SetRecordingDeviceMute](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_setrecordingdevicemute) - [SetRecordingDeviceVolume](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_setrecordingdevicevolume) - [StartAudioDeviceLoopbackTest](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_startaudiodeviceloopbacktest) - [StartPlaybackDeviceTest](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_startplaybackdevicetest) - [StartRecordingDeviceTest](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_startrecordingdevicetest) - [StopAudioDeviceLoopbackTest](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_stopaudiodeviceloopbacktest) - [StopPlaybackDeviceTest](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_stopplaybackdevicetest) - [StopRecordingDeviceTest](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_iaudiodevicemanager_stoprecordingdevicetest) ## IMediaPlayer [#imediaplayer] 提供媒体播放器功能的类，支持多实例。 ### 相关参考 [#相关参考-2] - [AdjustPlayoutVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_adjustplayoutvolume) - [AdjustPublishSignalVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_adjustpublishsignalvolume) - [GetDuration](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getduration) - [GetMediaPlayerId](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getmediaplayerid) - [GetMute](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getmute) - [GetPlayoutVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getplayoutvolume) - [GetPlayPosition](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getplayposition) - [GetPlaySrc](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getplaysrc) - [GetPublishSignalVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getpublishsignalvolume) - [GetState](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getstate) - [GetStreamCount](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getstreamcount) - [GetStreamInfo](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#api_imediaplayer_getstreaminfo) - [Mute](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_mute) - [Open](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-open#api_imediaplayer_open) - [OpenWithMediaSource](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-open#api_imediaplayer_openwithmediasource) - [Pause](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_pause) - [Play](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_play) - [PlayPreloadedSrc](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_playpreloadedsrc) - [PreloadSrc](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-open#api_imediaplayer_preloadsrc) - [Resume](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_resume) - [Seek](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_seek) - [SelectAudioTrack](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_selectaudiotrack) - [SelectMultiAudioTrack](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_imediaplayer_selectmultiaudiotrack) - [SetAudioPitch](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setaudiopitch) - [SetAudioDualMonoMode](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setaudiodualmonomode) - [SetLoopCount](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setloopcount) - [SetPlaybackSpeed](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setplaybackspeed) - [SetPlayerOptionWithInt](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setplayeroption) - [SetPlayerOptionWithString](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setplayeroption2) - [SetRenderMode](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_imediaplayer_setrendermode) - [SetView](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-playnrender#api_imediaplayer_setview) - [Stop](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-control#api_imediaplayer_stop) - [SwitchSrc](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-open#api_imediaplayer_switchsrc) - [UnloadSrc](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-open#api_imediaplayer_unloadsrc) ## IMediaPlayerSourceObserver [#imediaplayersourceobserver] 提供媒体播放器的回调。 ### 相关参考 [#相关参考-3] - [OnAudioVolumeIndication](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onaudiovolumeindication) - [OnMetaData](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onmetadata) - [OnPlayBufferUpdated](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplaybufferupdated) - [OnPlayerCacheStats](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-cache#callback_imediaplayersourceobserver_onplayercachestats) - [OnPlayerEvent](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayerevent) - [OnPlayerInfoUpdated](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayerinfoupdated) - [OnPlayerPlaybackStats](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-info#callback_imediaplayersourceobserver_onplayerplaybackstats) - [OnPlayerSourceStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayersourcestatechanged) - [OnPlayerSrcInfoChanged](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onplayersrcinfochanged) - [OnPositionChanged](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onpositionchanged) - [OnPreloadEvent](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-observer#callback_imediaplayersourceobserver_onpreloadevent) ## IRtcEngine [#irtcengine] RTC SDK 的基础接口类，实现实时音视频的主要功能。 ### 详情 [#详情-1] IRtcEngine 提供了 App 调用的主要方法。 在调用其他 API 之前，必须先调用 [GetAgoraRtcEngine](/zh-CN/api-reference/rtc/unreal-blueprint/initialize#api_createagorartcengine) 创建 IRtcEngine 对象。 ### 相关参考 [#相关参考-4] - [AddVideoWatermark](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/watermark#api_irtcengine_addvideowatermark2) - [AdjustAudioMixingPlayoutVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_adjustaudiomixingplayoutvolume) - [AdjustAudioMixingPublishVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_adjustaudiomixingpublishvolume) - [AdjustAudioMixingVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_adjustaudiomixingvolume) - [AdjustLoopbackSignalVolume](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_adjustloopbacksignalvolume) - [AdjustPlaybackSignalVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_adjustplaybacksignalvolume) - [AdjustRecordingSignalVolume](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_adjustrecordingsignalvolume) - [AdjustUserPlaybackSignalVolume](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_adjustuserplaybacksignalvolume) - [ClearVideoWatermarks](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/watermark#api_irtcengine_clearvideowatermarks) - [Complain](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_complain) - [ConfigRhythmPlayer](/zh-CN/api-reference/rtc/unreal-blueprint/play/rhythmplayer#api_irtcengine_configrhythmplayer) - [GetAgoraRtcEngine](/zh-CN/api-reference/rtc/unreal-blueprint/initialize#api_createagorartcengine) - [CreateDataStream](/zh-CN/api-reference/rtc/unreal-blueprint/metadata/datastream#api_irtcengine_createdatastream2) - [GetAgoraMediaPlayer](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-initialize#api_irtcengine_createmediaplayer) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/play/mediaplayer/mediaplayer-initialize#api_irtcengine_destroymediaplayer) - [DisableAudio](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_disableaudio) - [DisableVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_disablevideo) - [EnableAudio](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_enableaudio) - [EnableAudioVolumeIndication](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_enableaudiovolumeindication) - [EnableContentInspect](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#api_irtcengine_enablecontentinspect) - [EnableDualStreamMode](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_enabledualstreammode3) - [EnableEncryption](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_enableencryption) - [EnableExtension](/zh-CN/api-reference/rtc/unreal-blueprint/extension#api_irtcengine_enableextension) - [EnableFaceDetection](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/face-detection#api_irtcengine_enablefacedetection) - [EnableInEarMonitoring](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_enableinearmonitoring2) - [EnableInstantMediaRendering](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_enableinstantmediarendering) - [EnableLocalAudio](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_enablelocalaudio) - [EnableLocalVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_enablelocalvideo) - [EnableLoopbackRecording](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_enableloopbackrecording) - [EnableMultiCamera](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_enablemulticamera) - [EnableCameraCenterStage](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/center-stage#api_irtcengine_enablecameracenterstage) - [EnableSoundPositionIndication](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/sound-position#api_irtcengine_enablesoundpositionindication) - [EnableVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_enablevideo) - [EnableVideoImageSource](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/image-source#api_irtcengine_enablevideoimagesource) - [EnableVirtualBackground](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/virtualbackground#api_irtcengine_enablevirtualbackground) - [EnableVoiceAITuner](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_enablevoiceaituner) - [EnableWebSdkInteroperability](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_enablewebsdkinteroperability) - [GetAudioDeviceInfo](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#api_irtcengine_getaudiodeviceinfo) - [GetAudioMixingCurrentPosition](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_getaudiomixingcurrentposition) - [GetAudioMixingDuration](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_getaudiomixingduration) - [GetAudioMixingPlayoutVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_getaudiomixingplayoutvolume) - [GetAudioMixingPublishVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_getaudiomixingpublishvolume) - [GetAudioTrackCount](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_getaudiotrackcount) - [GetCallId](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_getcallid) - [GetCameraMaxZoomFactor](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_getcameramaxzoomfactor) - [GetConnectionState](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_getconnectionstate) - [GetEffectCurrentPosition](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_geteffectcurrentposition) - [GetEffectDuration](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_geteffectduration) - [GetEffectsVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_geteffectsvolume) - [GetErrorDescription](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_geterrordescription) - [GetExtensionProperty](/zh-CN/api-reference/rtc/unreal-blueprint/extension#api_irtcengine_getextensionproperty2) - [GetFaceShapeAreaOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_getfaceshapeareaoptions) - [GetFaceShapeBeautyOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_getfaceshapebeautyoptions) - [GetNetworkType](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_getnetworktype) - [GetNtpWallTimeInMs](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_getntpwalltimeinms) - [GetScreenCaptureSources](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_getscreencapturesources) - [GetUserInfoByUid](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_getuserinfobyuid) - [GetUserInfoByUserAccount](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_getuserinfobyuseraccount) - [GetVersion](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_getversion) - [GetVolumeOfEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_getvolumeofeffect) - [Initialize](/zh-CN/api-reference/rtc/unreal-blueprint/initialize#api_irtcengine_initialize) - [IsCameraAutoExposureFaceModeSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscameraautoexposurefacemodesupported) - [IsCameraAutoFocusFaceModeSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscameraautofocusfacemodesupported) - [IsCameraExposurePositionSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscameraexposurepositionsupported) - [IsCameraExposureSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscameraexposuresupported) - [IsCameraFaceDetectSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscamerafacedetectsupported) - [IsCameraFocusSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscamerafocussupported) - [IsCameraTorchSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscameratorchsupported) - [IsCameraZoomSupported](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_iscamerazoomsupported) - [IsFeatureAvailableOnDevice](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_isfeatureavailableondevice) - [IsSpeakerphoneEnabled](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-route#api_irtcengine_isspeakerphoneenabled) - [IsCameraCenterStageSupported](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/center-stage#api_irtcengine_iscameracenterstagesupported) - [JoinChannelWithOptions](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_joinchannel2) - [JoinChannelWithUserAccount](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_joinchannelwithuseraccount2) - [LeaveChannelWithOptions](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_leavechannel2) - [LoadExtensionProvider](/zh-CN/api-reference/rtc/unreal-blueprint/extension#api_irtcengine_loadextensionprovider) - [MuteAllRemoteAudioStreams](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_muteallremoteaudiostreams) - [MuteAllRemoteVideoStreams](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_muteallremotevideostreams) - [MuteLocalAudioStream](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_mutelocalaudiostream) - [MuteLocalVideoStream](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_mutelocalvideostream) - [MuteRecordingSignal](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_muterecordingsignal) - [MuteRemoteAudioStream](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_muteremoteaudiostream) - [MuteRemoteVideoStream](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_muteremotevideostream) - [PauseAllChannelMediaRelay](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengine_pauseallchannelmediarelay) - [PauseAllEffects](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_pausealleffects) - [PauseAudioMixing](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_pauseaudiomixing) - [PauseEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_pauseeffect) - [PlayAllEffects](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_playalleffects) - [PlayEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_playeffect3) - [PreloadChannel](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_preloadchannel) - [PreloadChannelWithUserAccount](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_preloadchannelwithuseraccount) - [PreloadEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_preloadeffect) - [QueryCameraFocalLengthCapability](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_querycamerafocallengthcapability) - [QueryCodecCapability](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_querycodeccapability) - [QueryDeviceScore](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_querydevicescore) - [QueryScreenCaptureCapability](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_queryscreencapturecapability) - [Rate](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_rate) - [RegisterExtension](/zh-CN/api-reference/rtc/unreal-blueprint/extension#api_irtcengine_registerextension) - [RegisterLocalUserAccount](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_registerlocaluseraccount) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/initialize#api_irtcengine_release) - [RenewToken](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_renewtoken) - [ResumeAllChannelMediaRelay](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengine_resumeallchannelmediarelay) - [ResumeAllEffects](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_resumealleffects) - [ResumeAudioMixing](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_resumeaudiomixing) - [ResumeEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_resumeeffect) - [SelectAudioTrack](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_selectaudiotrack) - [SendCustomReportMessage](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_sendcustomreportmessage) - [SendStreamMessage](/zh-CN/api-reference/rtc/unreal-blueprint/metadata/datastream#api_irtcengine_sendstreammessage) - [SetAdvancedAudioOptions](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setadvancedaudiooptions) - [SetAINSMode](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setainsmode) - [SetAudioEffectParameters](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setaudioeffectparameters) - [SetAudioEffectPreset](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setaudioeffectpreset) - [SetAudioMixingDualMonoMode](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_setaudiomixingdualmonomode) - [SetAudioMixingPitch](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_setaudiomixingpitch) - [SetAudioMixingPosition](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_setaudiomixingposition) - [SetAudioMixingPlaybackSpeed](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_setaudiomixingplaybackspeed) - [SetAudioProfileAndScenario](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_setaudioprofile) - [SetAudioScenario](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_setaudioscenario) - [SetAudioSessionOperationRestriction](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengine_setaudiosessionoperationrestriction) - [SetAVSyncSource](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setavsyncsource) - [SetBeautyEffectOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setbeautyeffectoptions) - [SetFaceShapeAreaOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setfaceshapeareaoptions) - [SetFaceShapeBeautyOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setfaceshapebeautyoptions) - [SetFilterEffectOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setfiltereffectoptions) - [SetCameraAutoExposureFaceModeEnabled](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameraautoexposurefacemodeenabled) - [SetCameraAutoFocusFaceModeEnabled](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameraautofocusfacemodeenabled) - [SetCameraCapturerConfiguration](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameracapturerconfiguration) - [SetCameraDeviceOrientation](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameradeviceorientation) - [SetCameraExposureFactor](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameraexposurefactor) - [SetCameraExposurePosition](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameraexposureposition) - [SetCameraFocusPositionInPreview](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcamerafocuspositioninpreview) - [SetCameraStabilizationMode](/zh-CN/api-reference/rtc/unreal-blueprint/video/camera-capture#api_irtcengine_setcamerastabilizationmode) - [SetCameraTorchOn](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcameratorchon) - [SetCameraZoomFactor](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_setcamerazoomfactor) - [SetChannelProfile](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_setchannelprofile) - [SetClientRole](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_setclientrole2) - [SetCloudProxy](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setcloudproxy) - [SetColorEnhanceOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setcolorenhanceoptions) - [SetDefaultAudioRouteToSpeakerphone](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-route#api_irtcengine_setdefaultaudioroutetospeakerphone) - [SetDualStreamMode](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setdualstreammode2) - [SetEffectPosition](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_seteffectposition) - [SetEffectsVolume](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_seteffectsvolume) - [SetEnableSpeakerphone](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-route#api_irtcengine_setenablespeakerphone) - [SetExtensionProperty](/zh-CN/api-reference/rtc/unreal-blueprint/extension#api_irtcengine_setextensionproperty) - [SetExtensionProviderProperty](/zh-CN/api-reference/rtc/unreal-blueprint/extension#api_irtcengine_setextensionproviderproperty) - [SetHeadphoneEQParameters](/zh-CN/api-reference/rtc/unreal-blueprint/api-irtcengine-setheadphoneeqparameters) - [SetHeadphoneEQPreset](/zh-CN/api-reference/rtc/unreal-blueprint/api-irtcengine-setheadphoneeqpreset) - [SetInEarMonitoringVolume](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengine_setinearmonitoringvolume) - [SetLocalRenderMode](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setlocalrendermode2) - [SetLocalRenderTargetFps](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setlocalrendertargetfps) - [SetLocalVideoMirrorMode](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setlocalvideomirrormode) - [SetLocalVoiceEqualization](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setlocalvoiceequalization) - [SetLocalVoiceFormant](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setlocalvoiceformant) - [SetLocalVoicePitch](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setlocalvoicepitch) - [SetLocalVoiceReverb](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setlocalvoicereverb) - [SetLogFile](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setlogfile) - [SetLogFileSize](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setlogfilesize) - [SetLogFilter](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setlogfilter) - [SetLogLevel](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setloglevel) - [SetLowlightEnhanceOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setlowlightenhanceoptions) - [SetParameters](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setparameters) - [SetRemoteDefaultVideoStreamType](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setremotedefaultvideostreamtype) - [SetRemoteRenderMode](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setremoterendermode2) - [SetRemoteRenderTargetFps](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setremoterendertargetfps) - [SetRemoteSubscribeFallbackOption](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_setremotesubscribefallbackoption) - [SetRemoteVideoStreamType](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setremotevideostreamtype) - [SetRemoteVoicePosition](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/sound-position#api_irtcengine_setremotevoiceposition) - [SetScreenCaptureContentHint](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_setscreencapturecontenthint) - [SetScreenCaptureScenario](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_setscreencapturescenario) - [SetSubscribeAudioAllowlist](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setsubscribeaudioallowlist) - [SetSubscribeAudioBlocklist](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setsubscribeaudioblocklist) - [SetSubscribeVideoAllowlist](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setsubscribevideoallowlist) - [SetSubscribeVideoBlocklist](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengine_setsubscribevideoblocklist) - [SetupLocalVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setuplocalvideo) - [SetupRemoteVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_setupremotevideo) - [SetVideoDenoiserOptions](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/video-enhance-option#api_irtcengine_setvideodenoiseroptions) - [SetVideoEncoderConfiguration](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_setvideoencoderconfiguration) - [SetVideoScenario](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_setvideoscenario) - [SetVoiceBeautifierParameters](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setvoicebeautifierparameters) - [SetVoiceBeautifierPreset](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setvoicebeautifierpreset) - [SetVoiceConversionPreset](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/audio-effect#api_irtcengine_setvoiceconversionpreset) - [SetVolumeOfEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_setvolumeofeffect) - [StartAudioMixing](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_startaudiomixing2) - [StartAudioRecording](/zh-CN/api-reference/rtc/unreal-blueprint/recording#api_irtcengine_startaudiorecording3) - [StartEchoTest](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_startechotest3) - [StartLastmileProbeTest](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_startlastmileprobetest) - [StartLocalVideoTranscoder](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/local-transcoder#api_irtcengine_startlocalvideotranscoder) - [StartOrUpdateChannelMediaRelay](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengine_startorupdatechannelmediarelay) - [StartPreview](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_startpreview2) - [StartCameraCapture](/zh-CN/api-reference/rtc/unreal-blueprint/video/camera-capture#api_irtcengine_startcameracapture) - [StartRhythmPlayer](/zh-CN/api-reference/rtc/unreal-blueprint/play/rhythmplayer#api_irtcengine_startrhythmplayer) - [StartRtmpStreamWithoutTranscoding](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengine_startrtmpstreamwithouttranscoding) - [StartRtmpStreamWithTranscoding](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengine_startrtmpstreamwithtranscoding) - [StartScreenCapture](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_startscreencapture) - [StartScreenCaptureBySourceType](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_startscreencapture2) - [StartScreenCaptureByDisplayId](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_startscreencapturebydisplayid) - [StartScreenCaptureByScreenRect](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_startscreencapturebyscreenrect) - [StartScreenCaptureByWindowId](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_startscreencapturebywindowid) - [StartMediaRenderingTracing](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengine_startmediarenderingtracing) - [StopAllEffects](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_stopalleffects) - [StopAudioMixing](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#api_irtcengine_stopaudiomixing) - [StopAudioRecording](/zh-CN/api-reference/rtc/unreal-blueprint/recording#api_irtcengine_stopaudiorecording) - [StopChannelMediaRelay](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengine_stopchannelmediarelay) - [StopEchoTest](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_stopechotest) - [StopEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_stopeffect) - [StopLastmileProbeTest](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengine_stoplastmileprobetest) - [StopLocalVideoTranscoder](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/local-transcoder#api_irtcengine_stoplocalvideotranscoder) - [StopPreview](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengine_stoppreview2) - [StopCameraCapture](/zh-CN/api-reference/rtc/unreal-blueprint/video/camera-capture#api_irtcengine_stopcameracapture) - [StopRhythmPlayer](/zh-CN/api-reference/rtc/unreal-blueprint/play/rhythmplayer#api_irtcengine_stoprhythmplayer) - [StopRtmpStream](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengine_stoprtmpstream) - [StopScreenCapture](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_stopscreencapture) - [StopScreenCaptureBySourceType](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_stopscreencapture2) - [SwitchCamera](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_switchcamera) - [TakeSnapshot](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#api_irtcengine_takesnapshot) - [TakeSnapshotWithConfig](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#api_irtcengine_takesnapshot2) - [UnloadAllEffects](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_unloadalleffects) - [UnloadEffect](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#api_irtcengine_unloadeffect) - [UpdateChannelMediaOptions](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_updatechannelmediaoptions) - [UpdateLocalTranscoderConfiguration](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/local-transcoder#api_irtcengine_updatelocaltranscoderconfiguration) - [UpdatePreloadChannelToken](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_updatepreloadchanneltoken) - [UpdateRtmpTranscoding](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengine_updatertmptranscoding) - [UpdateScreenCapture](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_updatescreencapture) - [UpdateScreenCaptureParameters](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_updatescreencaptureparameters) - [UpdateScreenCaptureRegion](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_updatescreencaptureregion) ## IRtcEngineEventHandler [#irtcengineeventhandler] 接口类 IRtcEngineEventHandler 用于 SDK 向 App 发送事件通知，App 通过继承该接口类的方法获取 SDK 的事件通知。 ### 详情 [#详情-2] 该接口类的所有方法都有缺省（空）实现， App 可以根据需要只继承关心的事件。 :::caution 注意： - 在回调方法中，App 不应该做耗时或者调用可能会引起阻塞的 API（如 `sendMessage`），否则可能影响 SDK 的运行。 - SDK 不再捕获开发者在 IRtcEngineEventHandler 类回调中自行实现的代码逻辑中的异常。你需要自行处理该异常，否则异常出现时可能引起 App 崩溃。 ::: ### 相关参考 [#相关参考-5] - [OnActiveSpeaker](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onactivespeaker) - [OnAudioDeviceStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#callback_irtcengineeventhandler_onaudiodevicestatechanged) - [OnAudioDeviceVolumeChanged](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-device#callback_irtcengineeventhandler_onaudiodevicevolumechanged) - [OnAudioEffectFinished](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-effect-file#callback_irtcengineeventhandler_onaudioeffectfinished) - [OnAudioMixingFinished](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#callback_irtcengineeventhandler_onaudiomixingfinished) - [OnAudioMixingPositionChanged](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#callback_irtcengineeventhandler_onaudiomixingpositionchanged) - [OnAudioMixingStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/play/audio-mixing#callback_irtcengineeventhandler_onaudiomixingstatechanged) - [OnAudioPublishStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#callback_irtcengineeventhandler_onaudiopublishstatechanged) - [OnAudioQuality](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onaudioquality) - [OnAudioRoutingChanged](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/audio-route#callback_irtcengineeventhandler_onaudioroutingchanged) - [OnAudioSubscribeStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#callback_irtcengineeventhandler_onaudiosubscribestatechanged) - [OnAudioVolumeIndication](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onaudiovolumeindication) - [OnCameraExposureAreaChanged](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#callback_irtcengineeventhandler_oncameraexposureareachanged) - [OnCameraFocusAreaChanged](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#callback_irtcengineeventhandler_oncamerafocusareachanged) - [OnCameraReady](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#callback_irtcengineeventhandler_oncameraready) - [OnChannelMediaRelayStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#callback_irtcengineeventhandler_onchannelmediarelaystatechanged) - [OnClientRoleChanged](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onclientrolechanged) - [OnClientRoleChangeFailed](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onclientrolechangefailed) - [OnConnectionBanned](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onconnectionbanned) - [OnConnectionInterrupted](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onconnectioninterrupted) - [OnConnectionLost](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onconnectionlost) - [OnConnectionStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onconnectionstatechanged) - [OnEncryptionError](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onencryptionerror) - [OnError](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onerror) - [OnExtensionErrorWithContext](/zh-CN/api-reference/rtc/unreal-blueprint/extension#callback_irtcengineeventhandler_onextensionerrorwithcontext) - [OnExtensionEventWithContext](/zh-CN/api-reference/rtc/unreal-blueprint/extension#callback_irtcengineeventhandler_onextensioneventwithcontext) - [OnExtensionStartedWithContext](/zh-CN/api-reference/rtc/unreal-blueprint/extension#callback_irtcengineeventhandler_onextensionstartedwithcontext) - [OnExtensionStoppedWithContext](/zh-CN/api-reference/rtc/unreal-blueprint/extension#callback_irtcengineeventhandler_onextensionstoppedwithcontext) - [OnFacePositionChanged](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/face-detection#callback_irtcengineeventhandler_onfacepositionchanged) - [OnFirstLocalAudioFramePublished](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onfirstlocalaudioframepublished) - [OnFirstLocalVideoFrame](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onfirstlocalvideoframe) - [OnFirstLocalVideoFramePublished](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onfirstlocalvideoframepublished) - [OnFirstRemoteAudioFrame](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onfirstremoteaudioframe) - [OnFirstRemoteAudioDecoded](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onfirstremoteaudiodecoded) - [OnFirstRemoteVideoDecoded](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onfirstremotevideodecoded) - [OnFirstRemoteVideoFrame](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onfirstremotevideoframe) - [OnJoinChannelSuccess](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onjoinchannelsuccess) - [OnLastmileProbeResult](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onlastmileproberesult) - [OnLastmileQuality](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onlastmilequality) - [OnLeaveChannel](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onleavechannel) - [OnLocalAudioStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onlocalaudiostatechanged) - [OnLocalAudioStats](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onlocalaudiostats) - [OnLocalUserRegistered](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onlocaluserregistered) - [OnLocalVideoStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onlocalvideostatechanged) - [OnLocalVideoStats](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onlocalvideostats) - [OnLocalVideoTranscoderError](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/local-transcoder#callback_irtcengineeventhandler_onlocalvideotranscodererror) - [OnTranscodedStreamLayoutInfo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#callback_irtcengineeventhandler_ontranscodedstreamlayoutinfo) - [OnNetworkQuality](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onnetworkquality) - [OnNetworkTypeChanged](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onnetworktypechanged) - [OnPermissionError](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onpermissionerror) - [OnProxyConnected](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onproxyconnected) - [OnRejoinChannelSuccess](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onrejoinchannelsuccess) - [OnRemoteAudioStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onremoteaudiostatechanged) - [OnRemoteAudioStats](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onremoteaudiostats) - [OnRemoteAudioTransportStats](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onremoteaudiotransportstats) - [OnRemoteSubscribeFallbackToAudioOnly](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onremotesubscribefallbacktoaudioonly) - [OnRemoteVideoStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onremotevideostatechanged) - [OnRemoteVideoStats](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onremotevideostats) - [OnRemoteVideoTransportStats](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onremotevideotransportstats) - [OnRequestToken](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onrequesttoken) - [OnRhythmPlayerStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/play/rhythmplayer#callback_irtcengineeventhandler_onrhythmplayerstatechanged) - [OnRtcStats](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onrtcstats) - [OnRtmpStreamingEvent](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#callback_irtcengineeventhandler_onrtmpstreamingevent) - [OnRtmpStreamingStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#callback_irtcengineeventhandler_onrtmpstreamingstatechanged) - [OnSnapshotTaken](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#callback_irtcengineeventhandler_onsnapshottaken) - [OnStreamMessage](/zh-CN/api-reference/rtc/unreal-blueprint/metadata/datastream#callback_irtcengineeventhandler_onstreammessage) - [OnStreamMessageError](/zh-CN/api-reference/rtc/unreal-blueprint/metadata/datastream#callback_irtcengineeventhandler_onstreammessageerror) - [OnTokenPrivilegeWillExpire](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_ontokenprivilegewillexpire) - [OnTranscodingUpdated](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#callback_irtcengineeventhandler_ontranscodingupdated) - [OnUplinkNetworkInfoUpdated](/zh-CN/api-reference/rtc/unreal-blueprint/network#callback_irtcengineeventhandler_onuplinknetworkinfoupdated) - [OnUserEnableLocalVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onuserenablelocalvideo) - [OnUserEnableVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onuserenablevideo) - [OnUserInfoUpdated](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onuserinfoupdated) - [OnUserJoined](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onuserjoined) - [OnUserMuteAudio](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#callback_irtcengineeventhandler_onusermuteaudio) - [OnUserMuteVideo](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onusermutevideo) - [OnUserOffline](/zh-CN/api-reference/rtc/unreal-blueprint/channel#callback_irtcengineeventhandler_onuseroffline) - [OnVideoDeviceStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#callback_irtcengineeventhandler_onvideodevicestatechanged) - [OnVideoPublishStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onvideopublishstatechanged) - [OnVideoSizeChanged](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onvideosizechanged) - [OnVideoStopped](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#callback_irtcengineeventhandler_onvideostopped) - [OnVideoSubscribeStateChanged](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#callback_irtcengineeventhandler_onvideosubscribestatechanged) - [OnVideoRenderingTracingResult](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#callback_irtcengineeventhandler_onvideorenderingtracingresult) ## IRtcEngineEx [#irtcengineex] 提供多频道方法的接口类。 ### 详情 [#详情-3] 继承自 [IRtcEngine](/zh-CN/api-reference/rtc/unreal-blueprint/rtc-interface-class#class_irtcengine)。 ### 相关参考 [#相关参考-6] - [AddVideoWatermarkEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/watermark#api_irtcengineex_addvideowatermarkex) - [ClearVideoWatermarkEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/watermark#api_irtcengineex_clearvideowatermarkex) - [CreateDataStreamEx](/zh-CN/api-reference/rtc/unreal-blueprint/metadata/datastream#api_irtcengineex_createdatastreamex2) - [EnableAudioVolumeIndicationEx](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengineex_enableaudiovolumeindicationex) - [EnableContentInspectEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#api_irtcengineex_enablecontentinspectex) - [EnableDualStreamModeEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_enabledualstreammodeex) - [EnableEncryptionEx](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengineex_enableencryptionex) - [EnableLoopbackRecordingEx](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-capture#api_irtcengineex_enableloopbackrecordingex) - [GetCallIdEx](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengineex_getcallidex) - [GetConnectionStateEx](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengineex_getconnectionstateex) - [JoinChannelEx](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengineex_joinchannelex) - [JoinChannelWithUserAccountEx](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengine_joinchannelwithuseraccountex) - [LeaveChannelEx](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengineex_leavechannelex2) - [MuteAllRemoteAudioStreamsEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_muteallremoteaudiostreamsex) - [MuteAllRemoteVideoStreamsEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_muteallremotevideostreamsex) - [MuteLocalAudioStreamEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_mutelocalaudiostreamex) - [MuteLocalVideoStreamEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_mutelocalvideostreamex) - [MuteRemoteAudioStreamEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_muteremoteaudiostreamex) - [MuteRemoteVideoStreamEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_muteremotevideostreamex) - [PauseAllChannelMediaRelayEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengineex_pauseallchannelmediarelayex) - [ResumeAllChannelMediaRelayEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengineex_resumeallchannelmediarelayex) - [SendCustomReportMessageEx](/zh-CN/api-reference/rtc/unreal-blueprint/network#api_irtcengineex_sendcustomreportmessageex) - [SetDualStreamModeEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_setdualstreammodeex) - [SetRemoteRenderModeEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengineex_setremoterendermodeex) - [SetRemoteVideoStreamTypeEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_setremotevideostreamtypeex) - [SetRemoteVoicePositionEx](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-prenpost/sound-position#api_irtcengineex_setremotevoicepositionex) - [SetSubscribeAudioBlocklistEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_setsubscribeaudioblocklistex) - [SetSubscribeAudioAllowlistEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_setsubscribeaudioallowlistex) - [SetSubscribeVideoBlocklistEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_setsubscribevideoblocklistex) - [SetSubscribeVideoAllowlistEx](/zh-CN/api-reference/rtc/unreal-blueprint/publishnsubscribe#api_irtcengineex_setsubscribevideoallowlistex) - [SetupRemoteVideoEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengineex_setupremotevideoex) - [SetVideoEncoderConfigurationEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-basic#api_irtcengineex_setvideoencoderconfigurationex) - [SendStreamMessageEx](/zh-CN/api-reference/rtc/unreal-blueprint/metadata/datastream#api_irtcengineex_sendstreammessageex) - [StartMediaRenderingTracingEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-rendering#api_irtcengineex_startmediarenderingtracingex) - [StartOrUpdateChannelMediaRelayEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengineex_startorupdatechannelmediarelayex) - [StartRtmpStreamWithoutTranscodingEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengineex_startrtmpstreamwithouttranscodingex) - [StartRtmpStreamWithTranscodingEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengineex_startrtmpstreamwithtranscodingex) - [StopChannelMediaRelayEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/channel-media-relay#api_irtcengineex_stopchannelmediarelayex) - [StopRtmpStreamEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengineex_stoprtmpstreamex) - [TakeSnapshotEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#api_irtcengineex_takesnapshotex) - [TakeSnapshotWithConfigEx](/zh-CN/api-reference/rtc/unreal-blueprint/video/video-prenpro/snapshot#api_irtcengineex_takesnapshotex2) - [UpdateChannelMediaOptionsEx](/zh-CN/api-reference/rtc/unreal-blueprint/channel#api_irtcengineex_updatechannelmediaoptionsex) - [UpdateRtmpTranscodingEx](/zh-CN/api-reference/rtc/unreal-blueprint/cloud-media-relay/media-push#api_irtcengineex_updatertmptranscodingex) - [AdjustUserPlaybackSignalVolumeEx](/zh-CN/api-reference/rtc/unreal-blueprint/audio/audio-basic#api_irtcengineex_adjustuserplaybacksignalvolumeex) ## IScreenCaptureSourceList [#iscreencapturesourcelist] IScreenCaptureSourceList 类。该类在 [GetScreenCaptureSources](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_irtcengine_getscreencapturesources) 方法中返回。 ### 相关参考 [#相关参考-7] - [GetCount](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_iscreencapturesourcelist_getcount) - [GetSourceInfo](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_iscreencapturesourcelist_getsourceinfo) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/video/screencapture#api_iscreencapturesourcelist_release) - [FScreenCaptureSourceInfo](/zh-CN/api-reference/rtc/unreal-blueprint/class-screencapturesourceinfo) ## IVideoDeviceCollection [#ivideodevicecollection] 你可以通过该接口类获取视频设备相关的信息。 ### 相关参考 [#相关参考-8] - [GetCount](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicecollection_getcount) - [GetDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicecollection_getdevice) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicecollection_release) - [SetDevice](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicecollection_setdevice) ## IVideoDeviceManager [#ivideodevicemanager] 视频设备管理方法。 ### 详情 [#详情-4] IVideoDeviceManager 接口类提供用于测试视频设备的相关接口。你可以通过调用 [GetAgoraVideoDeviceManager](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_irtcengine_getvideodevicemanager) 方法来获取 IVideoDeviceManager 接口。 ### 相关参考 [#相关参考-9] - [EnumerateVideoDevices](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicemanager_enumeratevideodevices) - [GetCapability](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicemanager_getcapability) - [NumberOfCapabilities](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicemanager_numberofcapabilities) - [Release](/zh-CN/api-reference/rtc/unreal-blueprint/device-management/video-device#api_ivideodevicemanager_release)