Processing code to warp and generally mess with a video stream (either live from a camera, or from a file loaded from disk)
You'll need processing -- you can download it from
http://processing.org/
This code is known to run against Processing v3.2.1.
You'll also need the ControlP5 library -- available from http://www.sojamo.de/libraries/controlP5/. Download the zip file and unpack it into your ~/sketchbook/libraries folder.
If you have a webcam, when you run the sketch you'll be asked to choose
a mask file to warp the video stream. Choose it, and away you go. By
default, the code looks for a 648x480 video stream at 25fps on
/dev/video0 -- if you're not using Linux, or your video devices don't
match that, you should change the code in load_capture so that it
finds something appropriate. I know, that's kind of crap.
If you don't have a webcam, it'll prompt you for a video to load, followed by a mask file to warp it with.
I'd strongly advise against choosing video sources that are too high-res; much above 640x480 will result in fairly poor performance. Resizing video before playing with it is probably a good idea.
While video is playing, you can use the following keypresses to change state:
* `m`
* load a new mask image
* `w`
* flip the mask image vertically
* `a`
* flip the mask image horizontally
* `d`
* choose a random mask image
* `x`
* change the rendering mode; successive presses will cycle
through:
* chronomask brightness mode (where the brightness of the
imported mask file determines the temporal delay of each
pixel)
* image overlay mode (where the mask file is simply overlaid
on the video stream with no temporal effects)
* first-frame chronomask brightness mode (honestly, I can't
remember)
* chronomask red channel delay mode, where we only delay
video by the red input channel of the mask file
* `v`
* load a video file -- you can use this to switch from a webcam
input to a video file input.