mpegts-stream

mpegts-stream

Multiplex raw AAC audio samples and/or raw H264/AVC video samples into an MPEG2TS transport stream.

Example

//@ts-check
import { createReadStream, createWriteStream } from "fs";
import { MpegTsMuxer } from "./src/muxer.js";
import { Transform } from "stream";
import { TfAudioPacket, TfVideoPacket } from "./src/transforms.js";

const AUDIO_TYPE = 0x0F;
const VIDEO_TYPE = 0x1B;
const AUDIO_PID = 257;
const VIDEO_PID = 256;
const PMT_PID = 100;

const streamPidMap = {
    [AUDIO_TYPE]: AUDIO_PID,
    [VIDEO_TYPE]: VIDEO_PID
};

// transform used for preparing packets of AAC audio samples with ADTS headers into the object type that MpegTsMuxer expects. 
const apTf = new TfAudioPacket();
const muxer = new MpegTsMuxer(streamPidMap, PMT_PID, VIDEO_PID, 0);

const ws = createWriteStream('./out/test.ts');
const aacRs = createReadStream('./in/vid.aac');

// construct our pipeline...
aacRs
    // transform chunks of binary audio data into expected packets for the muxer.
    .pipe(apTf, { end: false })
    // multiplex the data into TS
    .pipe(muxer)
    // write the resulting data to the file.
    .pipe(ws);