http://mercury.bbspink.com/test/read.cgi/avideo/1574483957/580
http://mercury.bbspink.com/test/read.cgi/avideo/1487955669/883
http://mercury.bbspink.com/test/read.cgi/avideo/1578038023/338
http://mercury.bbspink.com/test/read.cgi/avideo/1565361383/604
GL6．連続投稿・重複