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| you have options with expressions too : i found that , that can be adapted Re: driving opacity based on another layer's pixel value? by Dan Ebberts on Oct 4, 2008 at 5:57:07 am Something like this should do it: sampleSize = [10,10]; target = thisComp.layer("layer 1"); samplePos = [target.width,target.height]/2; rgb = target.sampleImage(samplePos, sampleSize, true, time); hsl = rgbToHsl(rgb); hsl[2]*100 Dan 2013/10/17 Simon Björk <bjork.simon@gmail.com>: > If you can stabilize your shot around an area that has flicker, this method > works very well. > > - Create a composition called "average luma". You could make it in a lower > resolution to save render time. Drop in your plate and duplicate it. On the > bottom layer, freeze frame at a frame where you have no flicker (or as > little as possible). Apply a blur to both layers and crank up blurriness a > lot. Set the blending mode of the top layer to "Divide". > - Create a composition called "flicker removal". Drop in your plate at the > bottom and the average luma composition on top, scale it to composition > size, and set the blending mode to "Multiply". > - Flicker removed. > > So if you need to stabilize around an area, you would probably want to crop > the plate around that area and use that to average the luminance. It > important that you linearize your footage and that you work in 32bpc. > > Cheers, > Simon > > > 2013/10/17 Simon Björk <bjork.simon@gmail.com> >> >> If you can stabilize your shot around an area that has flicker, this >> method works very well. >> >> - Create a composition called "average luma". You could make it in a lower >> resolution to save render time. Drop in your plate and duplicate it. On the >> bottom layer, freeze frame at a frame where you have no flicker (or as >> little as possible). Apply a blur to both layers and crank up blurriness a >> lot. Set the blending mode of the top layer to "Divide". >> - Create a composition called "flicker removal". Drop in your plate at the >> bottom and the average luma composition on top, scale it to composition >> size, and set the blending mode to "Multiply". >> - Flicker removed. >> >> So if you need to stabilize around an area, you would probably want to >> crop the plate around that area and use that to average the luminance. It >> important that you linearize your footage and that you work in 32bpc. >> >> See attached example. >> >> Cheers, >> Simon >> >> >> 2013/10/16 Stephen van Vuuren <stephen@sv2studios.com> >>> >>> I have this plugin: >>> >>> http://www.granitebaysoftware.com/products/productgbd.aspx >>> >>> It's decent but not what I would call state of the art. >>> >>> stephen van vuuren >>> 336.202.4777 >>> >>> http://www.insaturnsrings.com/ >>> http://www.sv2dcp.com/ >>> http://www.sv2studios.com/ >>> >>> A film is - or should be - more like music than like fiction. It should >>> be a >>> progression of moods and feelings. The theme, what's behind the emotion, >>> the >>> meaning, all that comes later. >>> -Stanley Kubrick >>> >>> -----Original Message----- >>> From: After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf >>> Of >>> Perry Mitchell >>> Sent: Wednesday, October 16, 2013 4:42 AM >>> To: After Effects Mail List >>> Subject: [AE] Camera flicker >>> >>> High speed video shooting has now become pretty mundane. Sony has just >>> released an update to its F5/55 camera that offers 240fps. As a result of >>> seeing some quick & dirty tests I am triggered to ask what is the best >>> flicker reduction AE plug that members have encountered? As a minimum it >>> has >>> to offer the ability to track both moving scenes and differing flicker >>> areas >>> within the shot. >>> >>> -- >>> Perry Mitchell >>> Engineer >>> Farnham, Surrey >>> >>> >>> +---End of message---+ >>> To unsubscribe send any message to <ae-list-off@media-motion.tv> >>> >>> >>> +---End of message---+ >>> To unsubscribe send any message to <ae-list-off@media-motion.tv> >> >> > |
