They are photos, in this case from the MIP Nerf 360 dataset. I believe there are on the order of hundreds per scene. They are not videos turned into photos. Som

They are photos, in this case from the MIP Nerf 360 dataset. I believe there are on the order of hundreds per scene. They are not videos turned into photos. Some datasets include high grade position and directional information -- I believe this dataset does not, so you need to do some work to orient the rendering training. But, I'm a hobbyist, so all this could be very wrong.