# FilmBurn — primitive for transitions (glsl)

> **For AI agents:** find the right skill in one call — `curl -s "https://skills.varg.ai/api/search?q=<what the person wants>"` returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the use-case page.

Warm, glowing film-burn light leaks wash over the shot and fade out on the next

- **Install:** `npm install gl-transitions`
- **Registry:** gl-transitions · **Framework:** glsl · **License:** MIT
- **Docs and preview:** https://gl-transitions.com/editor/FilmBurn
- **Source:** https://github.com/gl-transitions/gl-transitions/blob/master/transitions/FilmBurn.glsl
- **Example:** https://skills.varg.ai/previews/lib-gl-transitions-film-burn.mp4?v=71858 (Rendered by varg from the library’s own code (GL Transitions · rendered by varg))
- **Time:** Seek-safe. Time is an input, so frame N always renders the same. Drop it into a render as it is.
- **Runs:** local render, free
- **Aspect:** any

## Prompt that renders it frame-exact

Add the "FilmBurn" transition from GL Transitions (by Anastasia Dunbar, MIT; https://gl-transitions.com/editor/FilmBurn, GLSL source https://github.com/gl-transitions/gl-transitions/blob/master/transitions/FilmBurn.glsl) between scenes of a vlog, wedding or travel edit: 1.2 s, ease-in-out. It pairs with a film-grain overlay for an analog look. Remotion: `npm install gl-transitions @gl-transitions/remotion @remotion/transitions`, then a `<TransitionSeries.Transition>` with `presentation={glTransition({ name: "FilmBurn", params: { Seed: 2.31 } })}` and `timing={linearTiming({ durationInFrames: 36, easing: Easing.inOut(Easing.cubic) })}` (36 frames at 30 fps). HyperFrames: draw the GLSL on a full-frame WebGL canvas over the cut, with the outgoing and incoming frames as the from/to textures, and compute progress from the composition time, clamp((t − cutStart) / 1.2, 0, 1) through the easing; never from requestAnimationFrame or a timer, so every frame renders the same. ffmpeg's xfade can't run GLSL. `Seed` (2.31) picks a different burn; change it on every cut so the leaks never repeat.

## Used in

- [Beat-synced slideshow](https://skills.varg.ai/video/beat-slideshow.md)
- [Music video](https://skills.varg.ai/video/music-video.md)
- [Kinetic manifesto](https://skills.varg.ai/video/manifesto.md)
- [News broadcast package](https://skills.varg.ai/video/news-package.md)
- [Photo memories](https://skills.varg.ai/video/memories.md)
- [Game trailer](https://skills.varg.ai/video/game-trailer.md)

## More transitions

- [Chromatic Aberration Wipe](https://skills.varg.ai/component/hf.chromatic-aberration-wipe.md) — `npx hyperframes add chromatic-aberration-wipe`
- [Colorama Wipe](https://skills.varg.ai/component/hf.colorama-wipe.md) — `npx hyperframes add colorama-wipe`
- [Cross Warp Morph](https://skills.varg.ai/component/hf.cross-warp-morph.md) — `npx hyperframes add cross-warp-morph`
- [Cut the Curve](https://skills.varg.ai/component/hf.cut-the-curve.md) — `npx hyperframes add cut-the-curve`
- [Directional Wipe](https://skills.varg.ai/component/hf.directional-wipe.md) — `npx hyperframes add directional-wipe`
- [Domain Warp Dissolve](https://skills.varg.ai/component/hf.domain-warp-dissolve.md) — `npx hyperframes add domain-warp-dissolve`