import fs from 'node:fs/promises'; import { ReadableStream, WritableStream, type TransformStream, } from 'node:stream/web'; import { EbmlStreamDecoder } from 'konoebml'; async function main() { const fileBuffer = await fs.readFile('media/test.webm'); await new ReadableStream({ pull(controller) { controller.enqueue(fileBuffer); controller.close(); }, }) .pipeThrough(new EbmlStreamDecoder() as unknown as TransformStream) .pipeTo(new WritableStream({ write: console.log })); } main();