Check it out here - and see the video demo below.

Via the device page:

This device is model no. GVS008 and is the first in the series to feature an external video input, and custom CNC’d front & rear panels. This machine is similar to The I.F.D. in terms of feature set, minus CV implementation and + the video input. The input allows this model not only to function as a synthesizer and internal feedback generator, but as a loopback for use with video mixers, and as a standalone glitchy video FX processor similar to the VGS35 & GVM002.
The I/O includes a composite video output, composite video input, a VGA output, an external audio input (1/8” and 1/4”), and a standard 2.1mm barrel jack for a 5v power supply.

On/Off button
Button & switch for freezing/holding the currently displayed image (new on this model)

RGB Mix knobs
RGB pulse buttons
Oscillator
- On/Off
- Rate, Shape, Depth knobs
- Mode select (LFO vs standard oscillator for scanlines)
- Send switches for RGB channels
Image shift up, down, left, right, zoom adjustment buttons
Audio input, sends for RGB color channels
- Doubles as RGB assignable noise generator
24 point patchbay for experimental glitches, routing audio in and out of the device, routing external signals into the device
* Switch for selecting internal feedback loop vs. external composite video source
* Switch for selecting between NTSC & PAL output
* CNC’d front panel & Rear I/O panel

* = New on this model
February, 2021.