yes, there's literally only one column of pixels, the sensor is say 4k tall by 1 wide, eg a row of pixels. The x axis in the image (left right) is the time dom

yes, there's literally only one column of pixels, the sensor is say 4k tall by 1 wide, eg a row of pixels. The x axis in the image (left right) is the time domain. Imagin instead of the people running from left to right, instead they were still and the pixels were moving right to left, or if that breaks your brain, think about if the track was a people mover and the runners were a static diorama moving left to right and the sensor is just it over time. But also none of that is real.