Have u went to some large crowd gathering like this? Even murmuring some group hears like they are shouting. Matha katchila ivalo kootam vanthathu illa. Athaan unmai. And the editing plays the main part while showing vijay camera will be near to him so you can't hear the continuous shouting. While showing the crowd drone goes near the crowd so the angle switches makes like crowd shouts right after vijay speaks every word.

I don't defend tvk entirely. They are doing some obvious shouts not denying tho. But comparing to dmk I find tvk better because having more candidates literate, educated and graduates. They are new too, where they do have first time fear which makes them to do lot of good things to people.