UniRecorder

Recorder helper (one layer verstion)

Records a video of a layer of the ResponsiveCanvas backing a CanvasRenderer. Simple and straightforward recording of a canvas. Encoded video chunks are cached to later be merged into one blob containing the final video file.

Constructors

new UniRecorder()

new UniRecorder(renderer, layer, type, bitRate?): UniRecorder

Constructor

Parameters

• renderer: CanvasRenderer<object>

Renderer to record video from

• layer: number = 0

Layer that will be recorded

• type: string = "video/webm"

Media/video type

• bitRate?: number

Video stream bit rate

Returns

UniRecorder

Properties

bitRate?

protected optional bitRate: number

Video stream bit rate

---

layer

protected layer: number = 0

Layer that will be recorded

---

recorder?

protected optional recorder: MediaRecorder

Video recorder

---

records

protected records: Blob[] = []

Record chunks

---

renderer

protected renderer: CanvasRenderer<object>

Renderer to record video from

---

stream?

protected optional stream: MediaStream

Video stream

---

type

protected type: string = "video/webm"

Media/video type

Methods

start()

start(): boolean

Start video recording

Recorder encodes video stream associated with the canvas layer. Chunks of encoded media stream are cached to later be merged into one blob on stop().

Returns

boolean

True if recording started, False otherwise

---

stop()

stop(): Promise<undefined | Blob>

Stop video recording

Renderer stops recording and then merges encoded video stream chunks into one blob returned to user.

Returns

Promise<undefined | Blob>

Promise resolved to Blob containing encoded video