Subject: Re: [stella] Experiment in animation From: Thomas Jentzsch <tjentzsch@xxxxxx> Date: Mon, 17 Feb 2003 09:24:16 +0100 |
Andrew wrote: > Let's say a 20fps movie at 48 x 96 pixels... If would suggest a vertical size that fits better into a 256 bytes page (e.g. 84), else you would be wasting a lot of space only for aligning. > ...with a 20% efficiency in packing. Hm, IMO that's way to pessimistic. Even with the limited ressources of the 2600, some simple differential encoding (though requireing *3* frame buffers) with additional RLE compression should be possible. I guess an efficiency of 80% is possible if you choose the animation carefully (e.g. cartoon style with little to none dithering, static backgrounds etc.). Then one second would require ~6KB (20 fps x 48 pixels x 84 pixels / 8 pixels per byte x 3 color fields x 0.2 (packing efficiency)). A short clip with 5 seconds should be possible within a 32K cart (incl. 2K RAM!). Still, for one hour we would need 21 MB! (Another option would be a greyscaled clip. Then you would only need 1 or 2 color fields and the compression might be also a bit more efficient.) > It ain't going to happen anytime soon. Alas. :-( Have?fun! Thomas _______________________________________________________ Thomas?Jentzsch?????????|?***?Every?bit?is?sacred?!?*** tjentzsch?at?web?dot?de?| ______________________________________________________________________________ Die SMS direkt auf's Handy. - Die Blitz-SMS bei WEB.DE FreeMail http://freemail.web.de/features/?mc=021165 ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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