Jitter Fractal Video Feedback A1

    Jitter Fractals


    The objects used in the CPU version are jit.op @op avg, jit.xfade, jit.rota, jit.brcosa, with matrix feedback.

    • Apr 16 2012 | 8:40 am
      Looks amazing - is there a patch you can share?
    • Apr 16 2012 | 10:08 am
      I prefer to share the idea more than an already made patch.
      It's very simple technically.
      I don't want to point people to one direction using feedback technique.
      If you really don't find a way to create a video feedback loop, I could share a way to do it...
      Thanks for your attention and replay by the way.
    • Apr 16 2012 | 8:44 pm
      very filthy
    • Apr 20 2012 | 10:56 pm
      nice!
    • Jan 22 2013 | 9:33 pm
      Hey awesome patch, do you mind explaining how this matrix feedback works?
    • Jan 22 2013 | 10:56 pm
      to create a feedback loop in jitter, there's a little trick, like in msp you need [send~] and [receive~]
      I just opened my CPU version and without doubt it's way better (but way slower too)
      so for the feedback loop you need [jit.xfade @in2_name x @out-name x].
      the xfade message will control the feedback amount.
      you connect your video input to [jit.xfade] in1 then its output to the video processing (in this situation [jit.rota @boundmode 4] and [jit.brcosa]) and the processing output back to [jit.xfade] in2.
      a [jit.brcosa] on the output is useful to bring back the luminosity/contrast the feedback loop removes.
      voilà.
      if you don't get it, don't hesitate to ask questions, if you find any nice results, show us.
      have fun.
    • Jan 31 2013 | 3:06 pm
      I just started using Max/Jitter and this has to be the coolest thing I've seen so far come from it. I just hope my projects turn out to be this sweet.
    • Feb 01 2013 | 4:24 am
      thank you.
    • Oct 27 2013 | 5:37 am
      Hi Bertrand!
      Kudos on the awesome patch. I have been interested in video feedback for quite some time now, and am finally trying to create 'digital feedback' as opposed to analog using Jitter. I'm just curious - did you manipulate the parameters (zoom, position displacement, etc.) in real time, or were they set to static numbers? I'm a Jitter newbie, so any tips you can provide are most appreciated. Keep up the good work!
    • Oct 27 2013 | 10:23 am
      I can tell you quite clearly that the jit.rota was manipulated quite a lot in realtime.
      Hope this helps.
    • Oct 27 2013 | 4:26 pm
      Thanks... I have copied the attribute buttons for the jit.rota object from the jit.rota help file, but I am unsure how to set things up so that these values can be manipulated in real time - right now I am only able to click and drag on the numbers, or enter them manually. I have a midi controller (M Audio Axiom 61) - is there a way to map knobs to control these parameters in real time? Or are there other objects in Max that are well-suited for this purpose? (I'm sure there are).
      Thanks again for any insight!
    • Oct 27 2013 | 6:11 pm
      yeah, those attribute things are problematic, to say the least - they don't save with presets either, IIRC. Great for prototyping, bad for patching...
      do the traditional method instead; message box with "anchor_x $1" and integers coming in there.
    • Oct 27 2013 | 6:35 pm
      wow! great great trick! thanks a lot, awesome!!!
      Btw, can someone please explain to me the function of "@in2_name x" and "@out-name x" in jit.xfade? Of course I checked the reference but can't understand what is going on in this case...
      @DCARDELLO: check Max tutorials--->MIDI--->Basics. Or check ctlin object.
    • Oct 27 2013 | 6:42 pm
      it seems it works in the same way without “@in2_name x” and “@out-name x” in jit.xfade...
    • Oct 27 2013 | 7:46 pm
      @T the problem that DCARDELLO is describing is the attrui objects that Max creates. They're great for somethings, but can't really be controlled sensibly using anything other than a mouse.
    • Oct 27 2013 | 7:49 pm
      Oh, and as a tip to the uninitiated, I think the key tweak here is [jit.rota @interp 1]
    • Oct 28 2013 | 4:18 am
      appreciate the tips, all. yes - I am a newbie. to be fixed soon >.<
    • Nov 15 2013 | 7:21 pm
      I'm also trying to get a fractal effect like this by webcam input, I followed the hints but cannot get the fracal effect. can somebody see what i'm doing wrong or hint me in the right direction?
    • Nov 15 2013 | 8:58 pm
      don't really know how exactly you'd get fractals out of video, but you can get video feedback like so:
    • Nov 21 2013 | 2:31 pm
      I would say the fractals are working like this video but based on the buffering in max and changing the jit.rota function inputs. If someone makes something similar, do share!
    • Nov 21 2013 | 5:30 pm
      Wow, just did a small patch with xfade, rota and brcosa, here's me playing only with the theta param of jit.rota:
    • Nov 22 2013 | 1:29 am
      Simple one using jit.op (max) and jit.rota. Boundmode seems to be key to me. https://www.youtube.com/watch?v=UQmwQtn0d9g
    • Nov 22 2013 | 4:18 pm
      Have fun !