In this situation, do you have to wait for the red signal to turn green to continue driving?

In the video you are waiting in a town before a junction where a police officer is directing traffic; the traffic lights show red, and the police officer is standing sideways to you. To continue driving, you do not have to wait for the red signal to change to green. The answer is: no.

The Road Traffic Act states that instructions and signals given by persons directing traffic take precedence over light signals and road signs. The Regulation on road signs and signals states that a position in which the person directing traffic is sideways to the approaching vehicles means permission to enter the junction or the stretch of road beyond the person directing traffic. Since the police officer is standing sideways to you, you have permission to enter right now, and the red light does not matter - waiting for green would be a mistake and would block the traffic that the police officer has just opened. When an authorised person is directing traffic, the traffic lights become secondary - you watch the police officer's position and hands: sideways means "go", front or back means "stop", an arm raised up announces a change.

Legal basis: Art. 5 para. 1 and 2 of the Road Traffic Act (Prawo o ruchu drogowym); § 108 para. 1, 2 and 4 of the Regulation on road signs and signals