Analog video synthesis is a method of generating visual imagery directly from electronic signals. Instead of playing back pre-recorded video or using computer graphics software, an analog video synthesizer creates images in real time by manipulating electrical voltages that control a video signal.

The result is a form of visual expression that is immediate, organic, and often unpredictable. Analog video synthesis has deep roots in experimental art, electronic music culture, and early video technology, and today it continues to be used by visual artists, VJs, and performers exploring new forms of audiovisual creativity.

 

How Analog Video Synthesis Works

At its core, analog video synthesis works by directly shaping a video signal. Traditional analog video formats such as composite video contain electrical signals that control brightness, timing, and synchronization. By manipulating these signals electronically, a video synthesizer can generate patterns, textures, and dynamic visual structures.

Many analog video synthesizers include controls such as:

• Oscillators that generate repeating waveforms
• Modulation sources that alter the image over time
• Voltage controls that shape the structure of patterns
• Synchronization circuits that keep the signal stable on displays

Because these signals are processed in real time, the visuals respond immediately to changes in knobs, switches, and modulation inputs. This makes analog video synthesis highly performative - artists can literally play the visuals like a musical instrument.

 

Analog Video Synthesis and CRT Displays

Analog video synthesis developed during a time when CRT televisions and monitors were the primary display technology. CRT displays respond directly to the electrical characteristics of a video signal, making them particularly well suited for experimental video synthesis.

Even today, many artists continue to use CRT televisions because of their unique visual qualities:

• natural scanlines
• analog distortion and signal texture
• strong contrast and phosphor glow

However, analog video synthesizers are not limited to vintage displays. With the right converters or capture devices, composite video signals can also be displayed on modern projectors, flat-panel displays, and digital video software.

Analog vs Digital Video Synthesis

Today, visual artists can generate live visuals using both analog hardware systems and digital software environments.

Digital visual tools include platforms such as:

• TouchDesigner
• Resolume Arena
• Max/MSP Jitter
• VDMX

These tools allow complex graphics and procedural visuals to be generated using modern computer hardware.

Analog video synthesis, however, offers a very different experience. Instead of pixels and software rendering, analog systems produce images directly from electronic signals. This creates visual behaviour that is often fluid, chaotic, and difficult to replicate digitally.

For many artists, analog video synthesis offers a tactile and exploratory approach to visuals that feels closer to working with modular synthesizers or electronic instruments.

Hardware Video Synthesizers

A hardware video synthesizer is a physical device designed to generate and manipulate video signals using electronic circuits. These instruments often feature knobs, switches, and patch points that allow artists to shape visual output in real time.

Hardware video synthesis systems may take several forms:

• modular systems designed to integrate with Eurorack video modules
• standalone instruments built specifically for video generation
• hybrid devices combining digital control with analog video circuitry

These instruments are commonly used in environments such as:

• live visual performances
• experimental music events
• art installations
• audiovisual improvisation

Because the visuals are generated live, hardware video synthesis is often used alongside electronic music performance, allowing visuals and sound to evolve together.

Using Analog Video Synthesis for Live Visuals

Analog video synthesizers are widely used in live performance contexts. Visual artists and VJs can generate abstract imagery in real time, responding directly to music or performance dynamics.

In a typical live setup, a video synthesizer may output composite video to:

• CRT televisions
• video mixers
• capture devices
• projectors
• visual software environments

This allows artists to combine analog visuals with digital workflows, integrating video synthesis into larger visual systems used for concerts, club events, and experimental performances.

Because analog video synthesis is inherently interactive, it encourages improvisation and experimentation during performances.

A New Generation of Video Synthesis Instruments

In recent years there has been renewed interest in hardware video synthesis, driven by artists exploring the intersection of sound, signal processing, and experimental video.

Modern video synthesizers build on the legacy of early pioneers while introducing new approaches to control and performance. Some devices integrate microcontrollers or digital logic with analog circuitry to create hybrid instruments that combine precision with the unpredictability of analog signals.

One example is Rorschach, a hybrid analog/digital video synthesizer developed by Lumatic Visual Devices. Rorschach generates dynamic black-and-white video patterns and outputs a standard composite video signal that can be displayed on CRT televisions, projectors, or capture devices.

Designed as a hands-on instrument, it allows artists to explore real-time visual generation using simple controls and direct signal manipulation.

 

Exploring Analog Video Synthesis

Analog video synthesis remains a unique creative medium. By working directly with electronic signals, artists can produce visuals that are raw, immediate, and deeply expressive.

Whether used in live performance, audiovisual installations, or experimental art, analog video synthesis continues to evolve as new instruments and artists explore its possibilities.

For those interested in exploring hardware video synthesis, modern devices such as standalone video synthesizers make it easier than ever to experiment with this fascinating intersection of electronics, art, and visual performance.