use strict;
my $str = 'ATI Stream OpenCLâ„¢ Technical Overview [Part 1] - What is OpenCLâ„¢-ecYIsu83c0I.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 2] - What is OpenCLâ„¢ (Continued)-PxPs9yKs5P8.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 3a] - Resource Setup-EbXf7MRXlpE.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 3b] - Resource Setup-uaevrJbksA0.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 4a] - Kernel Execution-IBTH2tDLqXU.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 4b] - Kernel Execution-SzymylQaA5w.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 5a] - Programming with OpenCLâ„¢ C-KFAkUsn4YPg.mkv
ATI Stream OpenCLâ„¢ Technical Overview [Part 5b] - Programming with OpenCLâ„¢ C-Jt4iTDvGdNE.mkv
ATI Stream Technology Driving the Future of HPC--LXAa8wm23E.mkv';
my $regex = qr/^(.*)([\w_-]{11})\.(mp4|mkv|flv)$/mp;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html