code: func main() {
  	file, _ := avutil.Open("projectindex.flv")
  	conn, _ := rtmp.Dial("rtmp://localhost:1936/app/publish")
  	// conn, _ := avutil.Create("rtmp://localhost:1936/app/publish")
  
  	demuxer := &pktque.FilterDemuxer{Demuxer: file, Filter: &pktque.Walltime{}}
  	avutil.CopyFile(conn, demuxer)
  
  	file.Close()
  	conn.Close()
  }
docs: // as same as: ffmpeg -re -i projectindex.flv -c copy -f flv rtmp://localhost:1936/app/publish