You can obtain any size by using the source image with the masking feature. Take the original and shift it then mask out part of the scene and re-run. Sort of

You can obtain any size by using the source image with the masking feature. Take the original and shift it then mask out part of the scene and re-run. Sort of like a patchwork quilt, it will build variations of the masked areas with each generation. Once the API is released, this will be easier to do in a programmatic fashion. Note: Depending on how many times you do this... I could see there being a continuity problem with the extremes of the image (eg: the far left has no knowledge of the far right). An alternative could be to scale the image down and mask the borders then later scale it back up to the desired resolution. This scale and mask strategy also works well for images where part of the scene has been clipped that you want to include (EG: Part of a character's body outside the original image dimensions). Scale the image down, then mask the border region, and provide that to the generation step.