How is it "Rent Live" but it's previously recorded?

[Sonic Boom of the South]

At the gym
shyt came on
And first thing it states is its previously recorded

 

[Wallychamp]

 

[Optimus Prime]

main actor (guitar) broke his foot last night
they showing his dress rehearsal footage from last night
scenes without him are supposedly live

 

[Sonic Boom of the South]

main actor (guitar) broke his foot last night
they showing his dress rehearsal footage from last night
scenes without him are supposedly live

I just farted in public laughing at this