Definition
WebRTC Encoded Transform defines RTCEncodedFrameMetadata
dictionary RTCEncodedFrameMetadata {
unsigned long synchronizationSource;
octet payloadType;
sequence<unsigned long> contributingSources;
unsigned long rtpTimestamp;
DOMHighResTimeStamp receiveTime;
DOMHighResTimeStamp captureTime;
DOMHighResTimeStamp senderCaptureTimeOffset;
DOMString mimeType;
};