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MVIP

MVIPThe MVIP (Mini Video Image Processor) is a Eurorack module, designed to fit into audio synthesizer racks made by Doepfer and other manufacturers. It is a stand alone video module, not part of the larger video synth system that I am still developing.

The MVIP provides a number of simple image processing functions for processing standard definition composite video. It has one composite video input and one composite video output. It works in PAL or NTSC and automatically detects the format of the video that you plug into it.

It has five control voltage inputs that accept +/-5 volt signals to control various parameters. The control voltages can change the brightness, the color hues, they can swap the digital bits of the digitized video being processed, and they can select between all of the different processing functions and modes.

Unlike the larger VideoSynth system that I am designing, this module does not require any other video modules to work. The larger video synth system will require video input, sync and output modules, plus whatever video processing modules that you want. The MVIP doesn't require any of those. It works by itself. On the other hand it also only processes a single video input and doesn't combine multiple video signals like the larger system.

Specs:

  • Width: 14HP (2.8 inches)
  • Depth: 2.56 inches (6.5 cm)
  • Power: 140ma of +12 and 140ma of -12 volts
  • Inputs: Composite video (NTSC or PAL), five control voltage inputs for +5 to -5 volts
  • Output: Composite video (NTSC or PAL) matches the format of the input, or jumper selected if no video input
  • Price: $595 plus shipping

Available: In Stock

The user manual is available here.

There are several videos available on YouTube and Vimeo that show the image processing from the MVIP. Please understand that the quality level of what can be seen on those online videos is much lower than what actually comes out of the MVIP.

MVIP video 1
Manual Demo
- This demo doesn't use the control voltage inputs. It simply shows the changes made when turning the manual control knobs. I added titles to the video to show which knobs are being turned.

MVIP video 2
Simple Oscillator Control
- MVIP controlled with an AFG oscillator. A Z8000 sequencer changed the oscillator frequency, and also controlled a pair of A-110 oscillators plus a filter to make the sounds.

MVIP video 3
Oscillator Through VCA
- MVIP controlled by an AFG oscillator. The oscillator goes through a VCA to show the MVIP settings with and without the oscillator. The sound is a ring mod of the AFG and another oscillator modulated by the same LFO as the VCA. The AFG is also modulated by an LFO to give it a waving motion. The first half shows the oscillator in each of the CV inputs. The second half varies the frequency and uses a combination of brightness, bitswap, and mode CVs.

MVIP video 4
Video Feedback - A quick test of doing some video feedback using the MVIP to process the signal from the camera to the monitor. No control voltages were used in making this video. Just manually turning the knobs on the MVIP while watching the monitor.

Here are some screen shots at half resolution.

The YouTube video of the MVIP is fairly blurry so I am posting a screen capture from the original video so you can see the difference. The top one is the original, the lower one is a screen capture from YouTube.

 
   

 
 
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