# bbc/VideoContext

An experimental HTML5 & WebGL video composition and rendering API.

Repository: https://github.com/bbc/VideoContext
Canonical: https://ross.abutalabs.com/products/videocontext
Homepage: http://bbc.github.io/VideoContext/
Language: JavaScript
License: Apache-2.0
License Family: permissive
Topics: video, html5-video, javascript, graph, renderer, html5
Last push: 2023-07-18T21:51:49+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3946, "days_push": 1142, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1353, forks 161 (observed 2026-08-28T04:04:28.587979+00:00)

## What it is
VideoContext is an experimental HTML5/WebGL library for composing and rendering interactive videos in the browser. It combines a graph-based, shader-accelerated processing pipeline with a media playback sequencing timeline, inspired by the Web Audio API.

## Use cases
- compose multiple videos with crossfade transitions in the browser
- apply WebGL shader effects to html5 video playback
- build a timeline-based video sequencer on a web page
- render video onto a canvas with compositing nodes
- create interactive responsive video experiences
- mix video, image, and canvas sources into one output

## When to choose
- you need programmatic, graph-based video composition in the browser
- you want Web Audio API-style node graphs for video
- you need timeline sequencing with transitions and effects without a server-side encoder

## When to avoid
- you need server-side video encoding or export to file formats like mp4
- you need a stable, production-guaranteed API since the project is experimental and in maintenance
- you need mobile-native or non-browser video processing

## Facets
- artifact type: library
- maturity: maintenance
- function: video-processing, graphics, animation
- domain: web-development, frontend, media
- platform: browser
- tags: webgl, html5-video, video-composition, timeline-sequencing, shader-effects, graph-pipeline, video, javascript, web

## Member repositories
- bbc/VideoContext (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:28.587979+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:42:06.173860+00:00, confidence not recorded.
  - readme: https://github.com/bbc/VideoContext (fetched 2026-08-28T04:04:28.587979+00:00, sha 0a6e46786bd1)
  - homepage: http://bbc.github.io/VideoContext/ (fetched 2026-08-29T12:00:54.066707+00:00, sha 2e48d4763eb4)
  - registry_npm: https://registry.npmjs.org/videocontext (fetched 2026-08-29T12:00:54.075935+00:00, sha 336a20b3cb9c)
- Data as of 2026-08-30T08:39:29.467469+00:00.