IVideoEncodedFrameObserver
Receives encoded video images.
onEncodedVideoFrameReceived
Reports that the receiver has received the to-be-decoded video frame sent by the remote end.
onEncodedVideoFrameReceived?(
    uid: number,
    imageBuffer: Uint8Array,
    length: number,
    videoEncodedFrameInfo: EncodedVideoFrameInfo
  ): void;
            
            If you call the setRemoteVideoSubscriptionOptions method and set encodedFrameOnly to true, the SDK triggers this callback locally to report the received encoded video frame information.
Parameters
- uid
 - The user ID of the remote user.
 - imageBuffer
 - The encoded video image buffer.
 - length
 - The data length of the video image.
 - videoEncodedFrameInfo
 - For the information of the encoded video frame, see EncodedVideoFrameInfo.