Killer Name YouTube Embedded Video Result MIME Type video/mp4 Matching Regular Expression Regular Expression ^(http://)?(www.)?youtube.com|^(http://)?(www.)?youtube-nocookie.com Match Page URL Match Source URL Match Flashvars Rejecting Regular Expression Regular Expression ^(http://)?(www.)?youtube.com|^(http://)?(www.)?youtube-nocookie.com Match Page URL Match Source URL Match Flashvars Variants Display Name YouTube Steps Type regular-expression-match Victim %1A Action (?<=youtube.com/v/|youtube-nocookie.com/v/)*(?=\&) Type download-resource Victim http://www.youtube.com/watch?v=%3A Type regular-expression-match Victim %4A Action (?<=var\ swfArgs\ \=\ \{)*(?=\}) Type regular-expression-match Victim %5A Action (?<=\",\ \"t\"\:\ \")*(?=\") Return URL http://www.youtube.com/get_video?fmt=18&video_id=%3A&t=%6A Display Name YouTube HD Steps Return URL http://www.youtube.com/get_video?fmt=22&video_id=%3A&t=%6A