Coke Studio Live or Lypsinging?

i am damn sure its lypsinging on a prerecorded track...they make track in recording studio with technical engineering then they shoot video after dat ...many time i noted a flaws ...i don't want to point out any single performances because artists need to be appreciated but can any one confirm it for me ???? because there are only few singers who actually can perform good on live stages and concerts shows but in CS everyone sound good so i was a lil confused and i Google majority of people said tis lypsinging so confusion ? 😊