go-hls-audio

A simple package to manage and produce a configurable HLS stream. This package uses ffmpeg to convert audio files into an HLS format. It will continuously append to the HLS playlists the audio that has been appended to the queue until it's empty. It's your responsibility to keep it not empty.

The goals of this package is to make it simpler to create a web/internet radio or similar.

ffmpeg

This package was built for ffmpeg version 4.3. Its not possible to execute the ffmpeg command on the usual 3.4 version that's currently on the APT. This is because the flag -var_stream_map is used. This was added in 92a32d0, after 3.4.

Usage

A simple example for getting started,

package main

import (
	"fmt"
	"os"

	"github.com/davidae/go-hls-audio"
)

func main() {
	s := hls.NewStream([]string{"64k", "128k"}, hls.WithDebug())
	song, err := os.Open("song.mp3")
	if err != nil {
		panic(err)
	}

	s.Append(hls.Audio{Data: song, Artist: "Foo", Title: "Bar"})

	go func() {
		for {
			a := <-s.Dequeued()
			fmt.Printf("dequeued %q, %d left in the queue\n", a, s.QueueSize())
		}
	}()

	if err := s.Start(); err != nil {
		if !errors.Is(err, hls.ErrNoAudioInQueue) {
			panic(err)
		}
	}
}

Checkout _example/ on how to use this package and serve HLS streams on a file server.