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Is there a less taxing way to do this effect?
Posted by Malcolm Desoto on June 13, 2007 at 2:44 pmSo, I want a moving background, like a mountain range for example. So, I create my background in PS as 10000 X 768. So I import this graphic
Anyway, this massive graphic slows the system down a bit. every time I move it around it turns to yellow for a bit (IS this normal? Do you know what I’m talking about?) Obviously I can work in a quarter of the resolution, but that’s never very fun.
I’ve got 4GB RAM and an AMD Dual Core 5200, so it’s not a terrible computer. Anyway, if you have any suggestions, feel free to post em.
Thank you much!
Anthony Dupsta replied 18 years, 11 months ago 8 Members · 18 Replies -
18 Replies
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Delete
June 13, 2007 at 3:31 pmI assume you’re using openGL.
Is adaptive resolution turned on? If so try lowering the degree of quality for it to, like, 1/8th or so. It may help with those moves. You may also want to create a proxie for your file to use while figuring out the details of the animation.
10000×800 isn’t really that big, but if you have the dpi up in the 300-600 range you’ll experience some hardcore processing time on any machine. Try using a low dpi version of the same file to edit with, then replace it right before rendering.
good luck -
Darby Edelen
June 13, 2007 at 4:10 pm[Dave LaRonde] “For example: a 6-inch-wide image at 150 DPI = 900 pixels, and a 3-inch-wide image at 300 DPI = 900 pixels. AE discerns absolutely no difference in the horizontal resolution of the two images.”
I’m pretty sure you’re right Dave, but I find it’s usually best to stick with the standard video dpi given by photoshop (72) so as to avoid any headaches related to the rough and tumble world of pre-press and print graphics =O
Darby Edelen
DVD Menu Artist
Left Coast Digital
Aptos, CA -
Roland R. kahlenberg
June 13, 2007 at 4:13 pm10,000 x 768 is a really huge image. It seems that you’re unsure how large you need your background to be. If that’s the case, start with a proxy at broadcast rez. Scale up as much as you need to in order to achieve your moves. Then look at the max scale value. Right-click and open up the value entry box and change the view from percentage to pixels. That’ll let you know how large your image needs to be. You may want to pad the values by an extra 5-10% – just in case.
HTH
Roland Kahlenberg
https://www.broadcastGEMs.com – Adobe After Effects project files
https://www.myspace.com/rorkrgbspace -
Steve Roberts
June 13, 2007 at 4:22 pmIn Photoshop, I just changed a 720×540 72dpi image to 720×540 300 dpi. I then imported both into AE.
No difference.
Now … once I noticed a size difference between PS images (same pixel dimension) sent to me at 72dpi and at 96 dpi. But I haven’t been able to reproduce that situation since, so I don’t know what led to it. Naturally we were on deadline at the time, so ours was not to reason why. 🙂
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Roland R. kahlenberg
June 13, 2007 at 5:16 pm[Steve Roberts] ” once I noticed a size difference between PS images (same pixel dimension) sent to me at 72dpi and at 96 dpi.”
I believe it has to do with the Resample Image switch. If it’s on, then there will be a size differential.
HTH
Roland Kahlenberg
https://www.broadcastGEMs.com – Adobe After Effects project files
https://www.myspace.com/rorkrgbspace -
Roland R. kahlenberg
June 13, 2007 at 5:38 pmHi Steve
Following are great pieces of info that covers video resolution and scaling/resampling.
HTH
Roland Kahlenberg
https://www.broadcastGEMs.com – Adobe After Effects project files
https://www.myspace.com/rorkrgbspace -
Steve Roberts
June 13, 2007 at 6:01 pmThat might have been the case, Roland. The designer might have just let PS increase the pixel dimensions instead of keeping an eye on them and manually dragging them back down, as I did when I made this test.
Or something.
Thanks.
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Steve Roberts
June 13, 2007 at 7:05 pmThose links should be added to the sticky posts!
Thanks, Roland!
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Delete
June 13, 2007 at 7:19 pmI’ve found working with various formats that the file size itself, not the dimensions changed with the dpi. I suggested using a lower dpi than 300 as I assumed his system might be experiencing minor ram issues when dealing with the larger dpi qualities. I, too, never really use anything above the generic 72, but imported digital camera pictures come in at 320dpi or so and some people forget to scale it down.
[“10,000 x 768 is a really huge image. It seems that you’re unsure how large you need your background to be.”
Not necessarily, He’s animating a scrolling background in 2D, it sounded like. If he needs room for moving it about, it’d have to be at least that long to cover the time allotment.]
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Roland R. kahlenberg
June 13, 2007 at 8:01 pmCheck out the article, setting larger dpi )after a scan or disk to disc transfer) doesn’t neccessarily lead to a larger file size. It depends on whether you’re resampling the image for printing or scaling up/down the image. It’s rather complicated stuff. But the gist of it is that dpi is irrelevant to video.
And 10,000 for a pan is a huge and long pan. I suppose it’s more than just a normal pan that he’s after. But it’s correct to assume that he isn’t yet sure how large his image should be – hence he’s testing it out to see how much torture AE can take.
Best workflow is to use the method I suggested earlier. The test will run much faster and his final dimensions will reflect his actual needs without gorging up precious RAM.
Cheers
Roland Kahlenberg
https://www.broadcastGEMs.com – Adobe After Effects project files
https://www.myspace.com/rorkrgbspace
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