transcoder/main.go

package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"os/signal"
	"syscall"
)

//This function will run in background consuming and displaying the FFMPEG status information
func monitor(ctx context.Context, t *Transcoder) {
	for {
		select {
		case <-ctx.Done():
			log.Println("Stop monitor")
			return
		case line := <-t.Status:
			fmt.Println("DATA", line)

		case line := <-t.Error:
			fmt.Println("ERROR", line)
		}
	}
}

func main() {

	// The context to control when the transcoding process should stop
	ctx, cancel := context.WithCancel(context.Background())
	t := NewTranscoder(ctx)
	go monitor(ctx, t)
	// Some example parameters
	args := []string{
		"-y", "-i", "my_file.mov",
		"-c:v", "h264",
		"-c:a", "mp3",
		"-hls_time",
		"1000",
		"-hls_wrap",
		"100",
		"output.mp4"}
	// Send now transcoding job using the "Submit" method
	uuid, err := t.Submit(args)
	log.Println("NEW PROCESS", uuid, err)
	// You can stop it at any moment
	//err = t.Stop(uuid)

	args[11] = "output2.mp4"
	// Send another job
	uuid, err = t.Submit(args)
	log.Println("OTHER PROCESS", uuid, err)
	// To stop the processing when a signal is received
	c := make(chan os.Signal, 1)
	signal.Notify(c, syscall.SIGTERM, syscall.SIGINT)
	s := <-c
	log.Println("SIGNAL", s)
	//Once we receive the signal to stop, we cancel all transcoding jobs and wait until all is stopped
	cancel()
	t.Wait()
}