Try using fullscreen! NO PIXELS! Here's how it works: The image is actually 1920x1440 bitmap embeded inside of an svg, this way Scratch doesn't try to re-size it down, and then it's re-sized using "Set size to 25%". So that when you go into fullscreen, it returns into its original 1920x1440! PLEASE NOTE: THIS TRICK CANNOT BE USED TO TURN A BITMAP INTO A VECTOR, EMBEDING A BITMAP INTO AN SVG DOES NOT MAKE IT RESIZABLE, THIS TRICK ONLY WORKS BECAUSE THE BITMAP IS LARGER AND THE SAME ASPECT RATIO AS SCRATCH THE PLAYER.
100% Wix! Yes it works with all 1920x1440 bitmaps! I'm not sure how the ST is going to feel about this though, they pre-resize bitmaps to save space on there servers so exploiting that they might not like much...