Progressive blur ?

[Dark-Cracker]

Hi,

I try to made an effect but i don't know if it's possible with avisynth.

I want to made a progressive blur for x frame.

To sum up i want to increase progressivly the threshold.

To have the effect : a thresold = 0 for the frame 1 and increase it until it reach the threshold 5 for the frame 250.

Is it possible to made this effect ? if you have a clue you are welcome.

Bye.

[Didée]

The clue is Animate(), isn't it? :)

Avisynth Documentation:

Animate (clip, int start_frame, int end_frame, string filtername, start_args, end_args)

Animate is a meta-filter which evaluates its parameter filter with continuously varying arguments. At frame start_frame and earlier, filter is evaluated with the arguments given by start_args. At frame end_frame and later, filter is evaluated with the arguments given by end_args. In between, the arguments are linearly interpolated for a smooth transition.

[Dark-Cracker]

yep i have see this too late :) i am playing with this and i will try the gaussian blur to apply it.
and perhaps a reverse mode to made a sort of focus/unfocus function.

I will post the script if i made it work well enought.

Thanks :)
++

[neuron2]

The Avisynth blur is probably not what you want, if I guess right what effect you are seeking. Have a look also at this:

http://neuron2.net/boxblur/boxblur.html

[davidhorman]

neuron2, I assume that box blur only takes integer radii like the vdub version - if so the abrupt transition between values may be noticeable. Perhaps variableblur (http://forum.doom9.org/showthread.php?s=&threadid=88645) would be a better option.

David

[neuron2]

I've never noticed any transitions when playing at normal speed.

I wasn't aware of variableblur(). Thanks for pointing it out. It's probably slower based on a quick perusal.