@ohos-ports/ffmpeg-ffmpeg

OpenHarmony / HarmonyOS port of @ffmpeg/ffmpeg (ffmpeg.wasm v0.12.15).

FFmpeg WebAssembly version — runs the real FFmpeg 5.1.4 WebAssembly engine (@ohos-ports/ffmpeg-core) on Node.js / OpenHarmony (aarch64).

Port notes

Upstream @ffmpeg/ffmpeg targets the browser (Web Worker + CDN-fetched core). This port makes it run on Node.js / OpenHarmony:

• Worker shim: when no browser Worker global exists (Node.js), the FFmpeg.load() bootstrap transparently uses a node:worker_threads based NodeWorkerShim (functionally equivalent module worker), with a worker-entry self/location bootstrap for the Emscripten core.
• Local core resolution: dist/esm/node/config.mjs resolves the locally installed @ohos-ports/ffmpeg-core wasm via import.meta.resolve and reads wasmBinary from disk — no CDN (unpkg.com) fetch at runtime.
• Node entry enabled: the exports["."].node condition points to the real ESM entry (./dist/esm/index.js) instead of the upstream browser-only stub.

In the browser the original behavior is fully preserved.

Usage (Node.js / OpenHarmony)

import { FFmpeg } from "@ohos-ports/ffmpeg-ffmpeg";

const ffmpeg = new FFmpeg();
await ffmpeg.load();                       // uses @ohos-ports/ffmpeg-core wasm
await ffmpeg.writeFile("in.wav", input);   // Uint8Array
await ffmpeg.exec(["-i", "in.wav", "-ar", "16000", "out.wav"]);
const data = await ffmpeg.readFile("out.wav");
await ffmpeg.terminate();

Dependencies

• @ohos-ports/ffmpeg-core — FFmpeg 5.1.4 WebAssembly core (OpenHarmony port)
• @ffmpeg/types — shared TypeScript types (unchanged upstream)

License

MIT — see LICENSE. Upstream: https://github.com/ffmpegwasm/ffmpeg.wasm

Port maintained by the ohos-ports project.