.*?any character (except for line terminators), repeated any number of times
\[the literal [ (9110 / 1338 / 5B16)
Non-Capturing Group(?:youtube|instagram) youtubethe literal text youtube (case sensitive) instagramthe literal text instagram (case sensitive) \h+any horizontal whitespace character, repeated at least once
id=the literal text id= (case sensitive) Negated Character Class[^][\s]+ +matches at least one character outside the set below:
]the literal ] (9310 / 1358 / 5D16)
[the literal [ (9110 / 1338 / 5B16)
\sany whitespace character
]the literal ] (9310 / 1358 / 5D16)