DEBUG ACTIVO
URL original: [https://youtu.be/mVVvFTkdja8?si=XItYVkyPrsbR4HSp]
Largo: 48
Array
(
    [scheme] => https
    [host] => youtu.be
    [path] => /mVVvFTkdja8
    [query] => si=XItYVkyPrsbR4HSp
)

Video ID detectado: [mVVvFTkdja8]
Pasa el regex? SI