How to prepare a large commercial (for a big screen in a stadium)?

Question

Video

It is necessary to prepare a promotional video for the big screen (will be shown at the stadium). The client provided requirements for such a video, taken from those who will post the video at the stadium. Video size requirement - 1000*500
There are materials (.png) that need to be used in the video, they are in two versions - small size, that is, there are about 600 pixels, and there is a large size, about 11000 pixels each.

But the question is, which of the .png files to use (small or large size) so that the video turns out to be of the highest quality when it is shown on the big screen?
I have doubts about the size of the video itself (1000*500px). After all, the screen itself will be well, 3 meters, no less.

Answer 1

After all, there are diodes about 5x5 millimeters in size or even more, of course, the resolution of such a screen is low.

Answer 2

What 11k pixels... they will tell you now..
Just use a regular image for comfortable work. You take 600px or 10000000px and stick it in, and then reduce it - there will be no difference in the final.
If you are told that you need to make a video 1000 * 500, then you make it that way. The fact that he will be spinning in the stadium on a 3-meter banner does not matter. It is far from the eyes and there are "pixels" the size of your head on this monitor.