> ## Documentation Index > Fetch the complete documentation index at: https://mintlify.com/jitsi/lib-jitsi-meet/llms.txt > Use this file to discover all available pages before exploring further. # JitsiTrack > Base class for local and remote media tracks ## Overview The `JitsiTrack` class represents a single media track (either audio or video). It serves as the base class for both `JitsiLocalTrack` and `JitsiRemoteTrack`. ## Constructor ```typescript theme={null} constructor( conference: JitsiConference, stream: MediaStream, track: MediaStreamTrack, streamInactiveHandler: MediaStreamTrackEventHandler, trackMediaType: MediaType, videoType?: VideoType ) ``` The conference instance this track belongs to The WebRTC MediaStream instance The WebRTC MediaStreamTrack instance (must be part of the stream) Handler for onended/oninactive events of the stream The media type of the track ('audio' or 'video') The video type for video tracks ('camera' or 'desktop') ## Methods ### attach() Attaches the MediaStream of this track to an HTML container. ```typescript theme={null} attach(container: HTMLElement): Promise ``` The HTML container ('video' or 'audio' element) to attach to Resolves when the track is successfully attached ### detach() Removes this JitsiTrack from the HTML container. ```typescript theme={null} detach(container?: HTMLElement): void ``` The HTML container to detach from. If not specified, detaches from all containers ### dispose() Removes attached event listeners and cleans up resources. ```typescript theme={null} dispose(): Promise ``` Resolves when disposal is complete ### getId() Returns the ID of the track. ```typescript theme={null} getId(): string | null ``` The track ID or null if this is a fake track ### getOriginalStream() Returns the WebRTC MediaStream instance. ```typescript theme={null} getOriginalStream(): MediaStream ``` The underlying WebRTC MediaStream ### getSourceName() Returns the source name of the track. ```typescript theme={null} getSourceName(): string | undefined ``` The source name identifier ### getSsrc() Returns the primary SSRC associated with the track. ```typescript theme={null} getSsrc(): number | undefined ``` The synchronization source identifier ### getStreamId() Returns the ID of the underlying WebRTC MediaStream. ```typescript theme={null} getStreamId(): string | null ``` The MediaStream ID ### getTrack() Returns the underlying WebRTC MediaStreamTrack. ```typescript theme={null} getTrack(): MediaStreamTrack ``` The underlying MediaStreamTrack ### getTrackId() Returns the ID of the underlying WebRTC MediaStreamTrack. ```typescript theme={null} getTrackId(): string | null ``` The MediaStreamTrack ID ### getTrackLabel() Returns the label of the underlying WebRTC MediaStreamTrack. ```typescript theme={null} getTrackLabel(): string ``` The track label (e.g., device name) ### getType() Returns the type (audio or video) of this track. ```typescript theme={null} getType(): MediaType ``` Either 'audio' or 'video' ### getUsageLabel() Returns a meaningful usage label for this track. ```typescript theme={null} getUsageLabel(): string ``` 'mic' for audio tracks, or the video type ('camera', 'desktop') for video tracks ### getVideoType() Returns the video type of this track. ```typescript theme={null} getVideoType(): VideoType | undefined ``` 'camera' or 'desktop' for video tracks, undefined for audio ### getHeight() Returns the height of the track in normalized landscape format. ```typescript theme={null} getHeight(): number ``` The minimum of track height and width (normalized) ### getWidth() Returns the width of the track in normalized landscape format. ```typescript theme={null} getWidth(): number ``` The maximum of track height and width (normalized) ### isActive() Checks whether the MediaStream is active/not ended. ```typescript theme={null} isActive(): boolean ``` True if the MediaStream is active, false otherwise ### isAudioTrack() Checks if this is an audio track. ```typescript theme={null} isAudioTrack(): boolean ``` True if this is an audio track ### isVideoTrack() Checks if this is a video track. ```typescript theme={null} isVideoTrack(): boolean ``` True if this is a video track ### isLocal() Checks whether this is a local track. ```typescript theme={null} isLocal(): boolean ``` True if it's a local track, false otherwise ### isLocalAudioTrack() Checks whether this is a local audio track. ```typescript theme={null} isLocalAudioTrack(): boolean ``` True if this is a local audio track ### isMuted() Checks whether this track is muted. ```typescript theme={null} isMuted(): boolean ``` True if the track is muted ### setAudioLevel() Sets the audio level for the stream. ```typescript theme={null} setAudioLevel(audioLevel: number, tpc?: TraceablePeerConnection): void ``` Value between 0 and 1 The peer connection instance which is the source for the audio level ### setAudioOutput() Sets a new audio output device for track's DOM elements. ```typescript theme={null} setAudioOutput(audioOutputDeviceId: string): Promise ``` ID of 'audiooutput' device from navigator.mediaDevices.enumerateDevices(), or '' for default device Resolves when the audio output device is changed successfully ### setSourceName() Assigns the source name to a track. ```typescript theme={null} setSourceName(name: string): void ``` The name to be assigned to the track ## Properties Indicates whether this JitsiTrack has been disposed. If true, the track is unusable The conference instance this track belongs to The video type ('camera' or 'desktop') for video tracks Array of HTML elements that are displaying the track ## Events JitsiTrack extends the Listenable class and emits various events: * `TRACK_AUDIO_LEVEL_CHANGED` - Fired when audio level changes * `TRACK_AUDIO_OUTPUT_CHANGED` - Fired when audio output device changes * `NO_AUDIO_INPUT` - Fired when no audio input is detected