# nareix/joy4

Golang audio/video library and streaming server

Repository: https://github.com/nareix/joy4
Canonical: https://ross.abutalabs.com/products/joy4
Language: Go
License: MIT
License Family: permissive
Last push: 2021-09-08T14:07:40+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3713, "days_push": 1820, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2715, forks 493 (observed 2026-08-28T04:07:12.068839+00:00)

## What it is
JOY4 is a Go audio/video library and streaming server providing well-designed interfaces for reading, writing, and transcoding media formats like MP4, FLV, and MPEG-TS, plus RTMP/HTTP-FLV live streaming servers. It includes RTSP/RTMP clients, packet filters, pubsub queues, and optional FFmpeg cgo bindings. The README now directs users to its successor, joy5.

## Use cases
- build an RTMP or HTTP-FLV live streaming server in Go
- transcode audio and video between media formats
- read and probe MP4, FLV, or MPEG-TS files
- pull streams from RTSP cameras with bug tolerance
- publish or play RTMP streams with OBS or ffmpeg
- parse H264 SPS/PPS and AAC headers in Go
- build multi-channel live streaming with pubsub buffers

## When to choose
- you need a pure-Go media muxing/demuxing and streaming toolkit
- you want a lightweight RTMP/HTTP-FLV server embedded in a Go application
- you need RTSP camera ingestion with high-level error tolerance

## When to avoid
- you are starting a new project - the author recommends joy5 instead
- you need HLS or MPEG-DASH serving, which is unimplemented
- you need actively maintained code with recent releases

## Facets
- artifact type: library
- maturity: maintenance
- function: video-processing, audio-processing, http-server, parser, streaming
- domain: media, developer-tools, web-development
- platform: go, windows, cross-platform
- tags: rtmp, rtsp, http-flv, streaming-server, muxer, demuxer, transcoding, ffmpeg-binding, golang, superseded-by-joy5, video, audio, linux, macos

## Member repositories
- nareix/joy4 (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:12.068839+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 2026-08-30T02:15:30.976835+00:00, confidence not recorded.
  - readme: https://github.com/nareix/joy4 (fetched 2026-08-28T04:07:12.068839+00:00, sha 9faf99251eef)
- Data as of 2026-08-30T08:39:29.467469+00:00.