Support and General Use > Theming and Appearance Customization

Setting Background on iPod

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karashata:
I would think you could save a little bit of memory by using 16-bit images since they'd be slightly smaller due to less stored information, and that also might boost WPS load time by a bit since it wouldn't have to convert them to 16-bit from 24- or 32-bit.  On the other hand, however Rockbox converts the image "on-the-fly" as it were might produce a slightly better looking image than some image manipulation programs would save it as (I recall someone saying that a 24-bit image looked better converted down in Rockbox than the same image saved as 16-bit by the program the person used to make it...)

Llorean:
Okay, here's a bit more accuracy:

1) Whether it's 16 or 24-bit or whatever, once the image is loaded it's in "screen" format. What that means is that it gets converted once, when it's loaded, and stays converted. Keeping the files as 16-bit will save you disk space, but not RAM. That means the first time the WPS is loaded (booting Rockbox, or when you change WPSes) it has to go through the  conversion, but not every time you go to the WPS screen.

2) If you convert to 16-bit on your computer it CAN look better. There is nothing Rockbox can do to the image that your computer can't do equally well, or better. Rockbox, though, may use a different dithering technique, and some people may find that a 24-bit image converts better when Rockbox handles it than it does when their computer handles it. All this means is that they picked a bad program or settings on their computer. The computer will always be able to match or surpass Rockbox for image conversion.

spike66:
Very clear... THANKS!

karashata:
That certainly clarifies things, thanks Llorean.

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