Interface MediaSource
activeSourceBuffers: SourceBufferList;
duration: number;
onsourceclose: (this: MediaSource, ev: Event) => any;
onsourceended: (this: MediaSource, ev: Event) => any;
onsourceopen: (this: MediaSource, ev: Event) => any;
readyState: ReadyState;
sourceBuffers: SourceBufferList;
addEventListener<K extends keyof MediaSourceEventMap>(
type: K,
listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any,
options?: boolean | AddEventListenerOptions,
): void;
addEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | AddEventListenerOptions,
): void;
addSourceBuffer(type: string): SourceBuffer;
clearLiveSeekableRange(): void;
dispatchEvent(event: Event): boolean;
endOfStream(error?: EndOfStreamError): void;
removeEventListener<K extends keyof MediaSourceEventMap>(
type: K,
listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any,
options?: boolean | EventListenerOptions,
): void;
removeEventListener(
type: string,
listener: EventListenerOrEventListenerObject,
options?: boolean | EventListenerOptions,
): void;
removeSourceBuffer(sourceBuffer: SourceBuffer): void;
setLiveSeekableRange(start: number, end: number): void;
}
                 
                    
                  Hierarchy
              
              - EventTarget- MediaSource (View Summary)
 
 Properties
ReadonlyactiveSourceBuffers  
duration
onsourceclose
onsourceended
onsourceopen
ReadonlyreadyState 
ReadonlysourceBuffers 
 Methods
addEventListener  
- addEventListener<K extends keyof MediaSourceEventMap>(
 type: K,
 listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any,
 options?: boolean | AddEventListenerOptions,
 ): void
- Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched. - The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture. - When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET. - When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners. - When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed. - If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted. - The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture. - Type Parameters- K extends keyof MediaSourceEventMap
 - Parameters- type: K
- listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any
- Optionaloptions: boolean | AddEventListenerOptions
 - Returns void
- addEventListener(
 type: string,
 listener: EventListenerOrEventListenerObject,
 options?: boolean | AddEventListenerOptions,
 ): void
- Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched. - The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture. - When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET. - When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners. - When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed. - If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted. - The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture. - Parameters- type: string
- listener: EventListenerOrEventListenerObject
- Optionaloptions: boolean | AddEventListenerOptions
 - Returns void
addSourceBuffer  
- addSourceBuffer(type: string): SourceBuffer
- Parameters- type: string
 - Returns SourceBuffer
clearLiveSeekableRange   
dispatchEvent 
endOfStream  
- endOfStream(error?: EndOfStreamError): void
- Parameters- Optionalerror: EndOfStreamError
 - Returns void
removeEventListener  
- removeEventListener<K extends keyof MediaSourceEventMap>(
 type: K,
 listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any,
 options?: boolean | EventListenerOptions,
 ): void
- Removes the event listener in target's event listener list with the same type, callback, and options. - Type Parameters- K extends keyof MediaSourceEventMap
 - Parameters- type: K
- listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any
- Optionaloptions: boolean | EventListenerOptions
 - Returns void
- removeEventListener(
 type: string,
 listener: EventListenerOrEventListenerObject,
 options?: boolean | EventListenerOptions,
 ): void
- Removes the event listener in target's event listener list with the same type, callback, and options. - Parameters- type: string
- listener: EventListenerOrEventListenerObject
- Optionaloptions: boolean | EventListenerOptions
 - Returns void
removeSourceBuffer  
- removeSourceBuffer(sourceBuffer: SourceBuffer): void
- Parameters- sourceBuffer: SourceBuffer
 - Returns void
This Media Source Extensions API interface represents a source of media data for an HTMLMediaElement object. A MediaSource object can be attached to a HTMLMediaElement to be played in the user agent.
MDN Reference