code: def encode(self, V, P, X, CC, seqNum, M, PT, SSRC, payload):
          
          timestamp = int(time())
          header = bytearray(HEADER_SIZE)
          # Fill the header bytearray with RTP header fields
          # ...
          header[0] = header[0] | V << 6; 
          header[0] = header[0] | P << 5; 
          header[0] = header[0] | X << 4; 
          header[0] = header[0] | CC; 
          header[1] = header[1] | M << 7; 
          header[1] = header[1] | PT; 
          header[2] = (seqNum >> 8) & 0xFF; 
          header[3] = seqNum & 0xFF; 
          header[4] = (timestamp >> 24) & 0xFF; 
          header[5] = (timestamp >> 16) & 0xFF;
          header[6] = (timestamp >> 8) & 0xFF;
          header[7] = timestamp & 0xFF;
          header[8] = (SSRC >> 24) & 0xFF; 
          header[9] = (SSRC >> 16) & 0xFF;
          header[10] = (SSRC >> 8) & 0xFF;
          header[11] = SSRC & 0xFF
  
          self.header = header
          
          # Get the payload
          # ...
          self.payload = payload
docs: Encode the RTP packet with header fields and payload.