# mozilla/popcorn-js

The HTML5 Media Framework. (Unmaintained. See https://github.com/menismu/popcorn-js for activity)

Repository: https://github.com/mozilla/popcorn-js
Canonical: https://ross.abutalabs.com/products/popcorn-js
Language: JavaScript
License: MIT
License Family: permissive
Archived: true
Last push: 2017-09-21T13:28:47+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5948, "days_push": 3268, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2129, forks 619 (observed 2026-08-28T04:06:17.065072+00:00)

## What it is
Popcorn.js is Mozilla's JavaScript library for building timeline-based interactive media experiences in the browser. It normalizes HTML5 audio/video APIs (plus YouTube, Vimeo, SoundCloud) and lets developers trigger web content and events at specific times in a playback timeline via a plugin architecture.

## Use cases
- synchronize web page content with html5 video playback
- create interactive timeline-based video presentations
- show maps, captions, or wikipedia entries at specific moments in a video
- add timed overlays and events to youtube or vimeo embeds
- build media-rich web documentaries or web productions

## When to choose
- maintaining or extending an existing codebase already built on Popcorn.js
- you specifically need its timeline/plugin model and accept the unmaintained status

## When to avoid
- starting any new project, since Mozilla no longer maintains it (last release 2017)
- you need modern browser support, security fixes, or bug fixes
- you need actual video encoding or processing rather than playback orchestration

## Facets
- artifact type: library
- maturity: abandoned
- function: plugin-system, animation
- domain: web-development, frontend, media
- platform: browser, cross-platform
- tags: html5-video, timeline, media-framework, interactive-video, event-system, unmaintained, javascript, video, audio

## Member repositories
- mozilla/popcorn-js (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:17.065072+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 2026-08-30T02:52:25.140487+00:00, confidence not recorded.
  - readme: https://github.com/mozilla/popcorn-js (fetched 2026-08-28T04:06:17.065072+00:00, sha 4ae46a65809c)
- Data as of 2026-08-30T08:39:29.467469+00:00.