I'm adding this api version because I simply don't have the time to maintain the normal scrap version.
youtube seems to make changes every week

Youtube URL Checker for your eggdrop.

To use:

• Copy this code and paste to a new file in wordpad or w/e not notepad
• Save with a unique filename with the extension .tcl
• Copy/Upload the .tcl file to your eggdrops scripts directory.
• Add a line like this to your eggdrop.conf -:

source scripts/youtubeurl.tcl

• Rehash or restart the eggdrop.
• (In the Party Line) Type .chanset #ChannelName +youtubeURL
• +/- youtubeURL as needed.

That's it. The script will respond in channels with the +youtubeURL flag.
See the top of the script to change the logo or text color.

##############################################################################################
##  ##     Youtube.tcl for eggdrop by Ford_Lawnmower irc.geekshed.net #Script-Help      ##  ##
##############################################################################################
## To use this script you must set channel flag +youtubeURL (ie .chanset #chan +youtubeURL) ##
##############################################################################################
package require tls
##############################################################################################
##  ##                             Start Setup.                                         ##  ##
##############################################################################################
proc youtubesurl {nick host hand chan text} {
  if {[lsearch -exact [channel info $chan] +youtubeURL] != -1} {
## Change the characters between the "" below to change the logo shown with each result.    ##
    set youtubelogo "\002\00301,00You\00300,04Tube\002\017"
## Change the format codes between the "" below to change the color/state of the text.      ##
    set textf "\002\017"
    set tagcolor "\002"
    set hostlang "en"
##############################################################################################
##  ##                           End Setup.                                              ## ##
##############################################################################################
    set youtubecheck [regexp -all -nocase {(?:\/watch\?v=|youtu\.be\/)([\d\w-]{11})} $text match youtubeid]
    if {$youtubeid != ""} {
      set youtubesite gdata.youtube.com
      set youtubeurl "/feeds/api/videos/${youtubeid}?v=2&hl=${hostlang}"
      set youtubeviews ""
      set youtubedesc ""
      set youtubeuser ""
      set youtubelikes ""
      set youtubedislikes ""
      set youtubedate ""
      set youtubefound ""
      set youtubeduration ""
      set youtubecategory ""
      if {[catch {set youtubesock [tls::socket $youtubesite 443]} sockerr]} {
        putlog "$youtubesite $youtubeurl $sockerr error"
        return 0
      } else {
        puts $youtubesock "GET $youtubeurl HTTP/1.0"
        puts $youtubesock "Host: $youtubesite"
        puts $youtubesock ""
        flush $youtubesock
        while {![eof $youtubesock]} {
          set youtubevar " [gets $youtubesock] "
          #title
          if {[regexp -nocase {<title>(.*)<\/title>} $youtubevar match youtubedesc]} {
            set youtubedesc "${tagcolor}Title: ${textf}${youtubedesc}"
          }
          #uploader
          if {[regexp -nocase {<name>(.*)<\/name>} $youtubevar match youtubeuser]} {
            set youtubeuser "${tagcolor}Uploader: ${textf}${youtubeuser}"
          }
          #views 
          if {[regexp -nocase {viewCount='([^']*)} $youtubevar match youtubeviews]} {
            set youtubeviews "${tagcolor}Views: ${textf}[ytaddcomma ${youtubeviews}]"
          } 
          #likes
          if {[regexp -nocase {numLikes='([^']*)'} $youtubevar match youtubelikes]} {
            set youtubelikes "${tagcolor}Likes: ${textf}[ytaddcomma ${youtubelikes}]"
          }  
          #dislikes
          if {[regexp -nocase {numDislikes='([^']*)'} $youtubevar match youtubedislikes]} {
            set youtubedislikes "${tagcolor}Dislikes: ${textf}[ytaddcomma ${youtubedislikes}]"
          }
          #duration 
          if {[regexp -nocase {seconds='([^']*)} $youtubevar match youtubeduration]} {
            set youtubeduration "${tagcolor}Duration: ${textf} [ytfixduration $youtubeduration]"
          }
          #.cat'>,<
          if {[regexp -nocase {\.cat'>([^<]*)<} $youtubevar match youtubecategory]} {
            set youtubecategory "${tagcolor}Type: ${textf}${youtubecategory}"
          }
          #date + Output 
          if {[regexp {<published>([^T]*)T} $youtubevar match youtubedate]} {
            set youtubedate "${tagcolor}Uploaded: ${textf}[string map -nocase {"uploaded on" ""} ${youtubedate}]"            
          }
          if {[regexp {<\/entry>} $youtubevar 1] != 0} {
            putserv "PRIVMSG $chan :[yturldehex "${youtubelogo} ${youtubedesc} ${youtubecategory} ${youtubeviews} ${youtubelikes} \
            ${youtubedislikes} ${youtubeuser} ${youtubedate} ${youtubeduration}"]"   
            close $youtubesock
            return 0          } 
          }
        close $youtubesock
        return 0 
      }
    }
  }
}
proc ytfixduration {secs} {
  set h [expr {$secs/3600}]
  incr secs [expr {$h*-3600}]
  set m [expr {$secs/60}]
  set s [expr {$secs%60}]
  if {$h} { 
    set h "$h hours" 
  } else {
    set h ""
  }
  if {$m} { 
    set m "$m minutes" 
  } else {
    set m ""
  }
  if {$s} { 
    set s "$s seconds" 
  } else {
    set s ""
  }
  return "$h $m $s"
}
proc ytaddcomma {number} {regsub -all {\d(?=(\d{3})+($|\.))} $number {\0,}}
proc yturldehex {string} {
  regsub -all {[\[\]]} $string "" string
  set string [subst [regsub -nocase -all {\&#([0-9]{2});} $string {[format %c \1]}]]
  return [encoding convertfrom utf-8 [string map {&quot; \" \xa0 "," &amp; \&} $string]]
}
proc yturlencode {instring} {
  return [subst [regsub -nocase -all {([^a-z0-9])} $instring {%[format %x [scan "\\&" %c]]}]]
}
bind pubm -|- "*youtube.*watch?v=*" youtubesurl
bind pubm -|- "*youtu.be/*" youtubesurl
setudef flag youtubeURL
putlog "\002*Loaded* \00301,00You\00300,04Tube\002\017 \002URL check api version by Ford_Lawnmower irc.GeekShed.net #Script-Help"