Transcoding progress doesn't show up

[hcbt]

Hello, I was following example given in the readme file but it does not output any progress, other than that it works fine. My function looks like that:

//ConvertAudio - converts dowloaded youtube video to .wav
func ConvertAudio(inputfilename string, videoID string) (string, error){
	format := "wav"
	overwrite := true
	outputfilename := videoID + ".wav"

	opts := ffmpeg.Options{
		OutputFormat: &format,
		Overwrite: &overwrite,
	}

	ffmpegConf := &ffmpeg.Config{
		FfmpegBinPath: "/usr/local/bin/ffmpeg",
		FfprobeBinPath: "/usr/local/bin/ffprobe",
		ProgressEnabled: true,
	} 
	
	progress, err := ffmpeg.
		New(ffmpegConf).
		Input(inputfilename).
		Output(outputfilename).
		WithOptions(opts).
		Start(opts)

	if err != nil {
		return outputfilename, err
	}

	for msg := range progress {
		log.Printf("%+v", msg)
	}

	err = os.Remove(inputfilename)
	if err != nil {
		return outputfilename, err
	}

	return outputfilename, nil
}

Running this on Mac Os Big Sur, go 1.15 and github.com/floostack/transcoder v1.1.1.