Client: We would like a time-lapse of the city skyline at sunset.
Me: I can do that. Sunsets usually last about 45 mins, so I can give you a final time-lapse anywhere between 4 to 20 seconds long.
Client: No, we want it to be the same length as a sunset.
Me: So you want a real-time video of the sunset?
Client: No, a time-lapse video of the whole sunset that lasts for 45 minutes.