Record videos of sonification

I got a question the other day about how it is possible to record a sonifyed video file based on my sonification module for Jamoma for Max. I wrote about my first experiments with the sonifyer module here, and also published a paper at this year’s ACHI conference about the technique.

It is quite straightforward to record a video file with the original video + audio using the jit.vcr object in Max. Below is a screenshot from a patch (sonifyer-recorder.maxpat) doing this:

The most important part here is to remember to input a 4 plane matrix to jit.vcr, otherwise it will complain. For this I use the little jcom.luma2rgb% component, which will automagically convert the video stream from 1 to 4 matrices, if needed. Here I have also combined the original video, motion image as well as motiongram into one image that I record, alongside the sonification of the motion. The output from this patch looks something like this:

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Alexander Refsum Jensenius is a music researcher and research musician living in Oslo, Norway.