beeferoni

14th March 2005 21:00 UTC

question about 'screen flicker'
I know this comes about (for me at least) when you have either too many buffer saves and/or restores, but I am wondering if there is some rule of thumb as to keeping flicker to a minimum. Or if there are some transitions that should not be made in cunjunction with a buffer save (and/or restore).

Thanks for your patience with the noob...:up: :D

^..^

14th March 2005 21:56 UTC

could it be that you accidentally checked "alternate save/restore"?

beeferoni

15th March 2005 02:29 UTC

Well, I gues that's my question, then. Is that an option not to be used? Or if so, please give me a hypothetical instance when you might use it. (I knew that was a little beyond my scope just yet! :D)

^..^

15th March 2005 11:05 UTC

hmm i can't remember that i ever used that option...
(actually i can't even remeber that anyone ever used thatoption ;))

normally i use the buffer in order to get a previously stored frame back in an other part of the preset. That's all what the frame-buffers are suposed to do in my opinion. :)

PAK-9

15th March 2005 14:33 UTC

flickering happens when you dont check 'clear every frame' on certain trans effects, it doesnt have anything specifically to do with buffer saves

^..^

15th March 2005 14:44 UTC

you mean, like when you unprofessionally set an invert!? Well actually you get a similar flickerning when you check "alternate save/restore" on a buffer.
But you're right: most flickering happens when you've unchecked "clear every frame" together with some trans/effects.

beeferoni

15th March 2005 16:13 UTC

Ok, thank you. I have probabaly had the flicker from both instances at different times. That should steer me clear of it in the future.

UnConeD

15th March 2005 17:00 UTC

You'll never get rid of 'flickering' until you understand where it comes from. AVS processes every effect in order, using the last frame as a starting point (unless "clear every frame" is checked).

If the operations contain some form of inverting in them, then flickering will result as a result of the feedback of frames. The simplest example is Trans / Invert in an empty preset. The frame starts out black, is inverted to white, is drawn, is inverted to black, is drawn, is inverted to white, is drawn, etc.

beeferoni

15th March 2005 21:08 UTC

That explains it perfectly. thanks, UnConed. At the risk of telling you something you've heard a million times, your presets are possibly THE best out there.