Topper Harley said:

1).. so the grain parts and their movement will be very small and work in 1920x1080 and make the picture appear more detailed than it really is.

2)But an effect like that will get lost on youtube, since the compression cleans it up again.

I'm glad you said that too, because no.1 is exactly what I did in this clip and no.2 is exactly what happened.

But like I said, it was just a test of concept, which was done really qickly, so the final clip would look better. The problem here is, that there is a lot of ghosting caused by DVNR in GOUT in this shot (the speeder leaves a trail of artefacts behind it) and removing that was my main goal in this clip. And I figured that as I was adding a static background anyway, I'd photoshop some of the HD parts into it and that was done really quickly too, so it should look better.