While I’m in a sharing mood. I’ve been spending some time with Feedback effects in the VJX this week, as I was planning to do my next “advanced” tutorial on VJX feedback and effects. However, after losing several hours in experimenting with different blend modes, input and output routing - and creating a huge range of effects and looks - I came to the realization that feedback in the VJX is such a huge topic that we couldn’t hope to cover it properly in a single tutorial.

So instead I’m going to focus on some interesting effects I have discovered, and documenting the exact combination of layers, routing, effects, and other parameters are required to achieve them.

This one is rather complicated. Using the mixer in Battle mode it to isolate two layers as a “feedback loop”, it brings a camera input from track 4, over to the feedback loop on layers 1&2, and then composites them back over the camera input with layer 3. With Difference, Subtraction and Negative blend modes used, and an Inverse effect, I can’t really tell you what’s happening here, but it looks great. The entire effect is controlled with just the gain on the camera input, and tweaking this from 1-255 gives all of the various effects you see in the video.

This one is a little easier, and documented on the Vimeo page. The black/white butterfly effect is achieved by overlaying a Difference blend mode over a layer which is flipped horizontally and has Negative effect applied.

I’ll give proper instruction on creating these effects, and more, soon.