FFmpeg from Go usage example

ffmpeg-example.go

package main

import (
	"os/exec"
)

func newCmd(imageFile, audioFile, outFile string) *exec.Cmd {
	return exec.Command("ffmpeg",
		"-r", "1",
		"-loop", "1",
		"-i", imageFile,
		"-i", audioFile,
		"-acodec", "copy",
		"-r", "1",
		"-shortest", "-vf",
		"scale=1280:720",
		outFile,
	)
}

func main() {
	cmd := newCmd("ep1.jpg", "ep1.wav", "ep1.flv")

	cmd.Run()
}

Example with flag parsing, and output on error

package main

import (
	"flag"
	"fmt"
	"os/exec"
)

func main() {
	var imageFile, audioFile, outFile string

	flag.StringVar(&imageFile, "image", "ep1.jpg", "The image file")
	flag.StringVar(&audioFile, "audio", "ep1.wav", "The image file")
	flag.StringVar(&outFile, "out", "ep1.flv", "The image file")

	flag.Parse()

	cmd := newCmd(imageFile, audioFile, outFile)

	if err := cmd.Run(); err != nil {
		fmt.Printf("Error: %v\n", err)
	}
}

func newCmd(imageFile, audioFile, outFile string) *exec.Cmd {
	return exec.Command("ffmpeg",
		"-r", "1",
		"-loop", "1",
		"-i", imageFile,
		"-i", audioFile,
		"-acodec", "copy",
		"-r", "1",
		"-shortest", "-vf",
		"scale=1280:720",
		outFile,
	)
}

thanks for those!