Vrsumo2017 It's sometimes subtle but there. The key is to look at the edges (top, bottom, left and right) of the video and you can see that parts of the image are cut off or squished. It's kinda hard to describe. Unless there is some universal setting on the Pico 4 that is causing the issue? I know there's a setting to enhance the quality of video playback, I haven't messed with it to test but maybe that's causing it? Seems unlikely though.
And it's more noticeable on some, like some appear completely circular and others such as say NaughtyAmerica vids just have this weird squeezed in effect. It's only really an issue with the edges and borders of the image. It doesn't seem like the actual scale is being messed with as if you look forward it seems normal.
