Hydra, covered here previously as the dominant tool in the livecoding visuals scene, has a genuinely low floor to get a first result on screen — which makes it a reasonable starting point for anyone curious about livecoding who hasn’t written a line of shader code before. The best place to actually start is a talk from the person who built it.
What to watch
Olivia Jack’s talk, Live Coding Visuals With Hydra, walks through the tool’s core idea directly from its creator: video sources chained through transformation functions, patched together the way a modular synthesist patches audio, all running live in a browser tab at hydra.ojack.xyz with no install required. It’s less a step-by-step feature tour than a demonstration of the actual thinking behind the tool — why treating video as something you patch, rather than something you edit, opens up a different kind of real-time visual work entirely.
What you’ll actually be able to do afterward
By the end, the core loop should make sense: pick a source (a shape generator, your webcam, a video), chain it through color and geometry transformations, and output it to the screen — then start modulating one function’s parameters with another function’s output, which is where Hydra’s patches start to feel alive rather than static. That’s enough to start experimenting immediately in the live editor; the deeper feature set (audio reactivity, multiple sources, networked collaboration) makes a lot more sense once that basic patching loop is second nature.
Where to go next
Hydra’s own beginner tutorial series builds on this same foundation in a more structured, step-by-step format — functions and color first, then sources, then modulation, then audio reactivity — for anyone who wants a slower on-ramp after seeing the concept demonstrated live.