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@rhythm-app/streamer

v0.1.0

Published

Low-latency audio decode, Opus encode, and RTP/RTCP streaming runtime for Node.js

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Links

Git

Maintainers

ahdgahdg

Keywords

napi-rsaudioopusrtpstreaming

Readme

@rhythm-app/streamer

npm install @rhythm-app/streamer

Rust N-API media runtime for decoding file, bounded HTTP, and live HTTP audio, encoding fixed 48 kHz stereo Opus frames, and sending paced RTP/RTCP.

Create one long-lived Streamer per media process. A streamId owns one persistent RTP session; seek, switch, and next promotion replace media generations without resetting SSRC, RTP sequence, or timestamp. Playlist policy, provider authentication, URL refresh, and gateway negotiation remain in the Node host.

Bounded HTTP sources can start playback before the response completes. Give signed URLs without an extension an accurate formatHint. Live sources are current-only and do not support pause, seek, or next preload because the runtime deliberately has no implicit timeshift store.

All lifecycle methods return Promises. Await shutdown() before process exit; shutdown is idempotent and permanently closes the instance. Promise errors begin with a stable media error code followed by a colon. Media failure events expose the same code in their code field.

The generated index.d.ts is the API reference. The repository documentation explains the ownership, latency, pause, retry, event, and resource-limit contracts in depth.

Published releases use napi-rs platform packages for Linux x64 GNU, Windows x64, macOS x64, and macOS arm64. The main package contains no platform-specific binary.