https:the literal text https: (case sensitive) \/the literal / (4710 / 578 / 2F16)
\/the literal / (4710 / 578 / 2F16)
\S*?any non-whitespace character, repeated any number of times
\.the literal . (4610 / 568 / 2E16)
mp4the literal text mp4 (case sensitive) g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string