on *:sockread:youtube: {
  var %yt | sockread %yt

  if ($regex(%yt,/<h1 >(.+)<\/h1>/)) sockmark youtube $addmark(youtube,Title: $+(,$regml(1),),62)
  elseif ($regex(%yt,/"length_seconds": "(\d+)/) ) sockmark youtube $addmark(youtube,Duration: $+(,$duration($regml(1)),),62)
  elseif ($regex(%yt,/ratingL-(.+)"\stitle|"smallText">(.+)\sratings<\/span>/g)) sockmark youtube $addmark(youtube,$+($regml(1),>,$regml(2)),62)
  elseif ($regex(%yt,/"watch-view-count">(.+)<\/span>\svi/)) sockmark youtube $addmark(youtube,$regml(1),62)
  elseif ($regex(%yt,date">(.+)<\/span>)) sockmark youtube $addmark(youtube,$+($chr(40),uploaded on $regml(1),$chr(41)),62)
  elseif ($regex(%yt,<a\sclass="url"\shref="\/user\/(\w+)")) sockmark youtube $addmark(youtube,By: $+(,$regml(1),),62)
}

This should work at the time of NOW.
Be aware that in some country, due to youtube's localization, something could not work as intended ;) (learn it the hard way...eehhe)

ohhh, wanna add this too:

on *:INPUT:#: {
  if ($regex($1,http\:\/\/.*youtube.*\/watch\?v=(.{11})&?.*)) {
    if (!$sock(youtube)) {
      noop $regex($strip($1-),http:\/\/.*youtube.*\/watch\?v=(.{11})&?.*)
      sockopen youtube www.youtube.com 80 | sockmark youtube $+(#,>,$regml(1))
    }
  }
}

this should "catch" also input from you, parsing youtube links that you paste in any channel.

Note that I'm a scripting beginner...so don't mind my "bad" style

EDIT: typo in ratings regex