like $results[1], qr/\.mp4/, 'video URL contains ".mp4"';
unlike $results[0], qr/offwarning/, 'audio URL doesn\'t contain "offwarning"';
like $results[1], qr/\.mp4/, 'video URL contains ".mp4"';
unlike $results[0], qr/offwarning/, 'audio URL doesn\'t contain "offwarning"';