Let’s say someone sends you a video to watch. How long can said video be before you decide it’s too long to watch?
For the purpose of this question, let’s assume you’re trying to decide whether to watch it or not right when you receive it. Let’s also assume that it’s moderately interesting (5/10).
How long I’m willing to watch depends more on the video than on who sent it. If it’s too long to watch right then but still interesting I might save it for later.