Improve logging

ffprobe.go

@@ -18,35 +18,40 @@ type FFProbeOutput struct {
 // runs ffprobe with the provided args and returns (stdout, stderr, error)
 func runFfprobe(args []string) ([]byte, []byte, error) {
 	ffprobe := "ffprobe"
-
-	fmt.Println(ffprobe, strings.Join(args, " "))
+	log.Infoln(ffprobe, strings.Join(args, " "))
 	cmd := exec.Command(ffprobe, args...)
 	var stdout bytes.Buffer
 	var stderr bytes.Buffer
 	cmd.Stdout = &stdout
 	cmd.Stderr = &stderr
 	err := cmd.Run()
+
 	if err != nil {
-		fmt.Println("ffprobe error:", err, stdout.String(), stderr.String())
+		log.Errorf("ffprobe error: %v", err)
 	}
+	log.Infoln("stdout:", stdout.String())
+	log.Infoln("stderr:", stderr.String())
 	return stdout.Bytes(), stderr.Bytes(), err
 }
 
 func getAudioFormat(filename string) (string, error) {
 	output, _, err := runFfprobe([]string{"-v", "quiet", "-print_format", "json", "-show_streams", filename})
 	if err != nil {
-		return "", fmt.Errorf("ffprobe execution failed: %v", err)
+		log.Errorln("ffprobe error:", err)
+		return "", err
 	}
 
 	var ffprobeOutput FFProbeOutput
 	err = json.Unmarshal(output, &ffprobeOutput)
 	if err != nil {
-		return "", fmt.Errorf("failed to parse ffprobe output: %v", err)
+		log.Errorln("failed to parse ffprobe output:", err)
+		return "", err
 	}
 
 	numStreams := len(ffprobeOutput.Streams)
 	if numStreams > 1 || numStreams <= 0 {
-		return "", fmt.Errorf("%d streams in ffprobe output", numStreams)
+		log.Error(numStreams, "streams in ffprobe output", numStreams)
+		return "", err
 	}
 
 	return ffprobeOutput.Streams[0].CodecName, nil
@@ -62,14 +67,14 @@ func getStreamBitrate(path string, stream int) (uint, error) {
 
 	stdout, _, err := runFfprobe(ffprobeArgs)
 	if err != nil {
-		fmt.Println("getAudioBitrate error:", err, string(stdout))
+		fmt.Println("ffprobe error:", err, string(stdout))
 		return 0, err
 	}
 	bitrateStr := strings.TrimSpace(string(stdout))
 
 	bitrate, err := strconv.ParseUint(bitrateStr, 10, 32)
 	if err != nil {
-		fmt.Println("getAudioBitrate error:", err)
+		fmt.Println("parse bitrate error:", err)
 		return 0, err
 	}
 	return uint(bitrate), nil
@@ -84,14 +89,14 @@ func getFormatBitrate(path string) (uint, error) {
 
 	stdout, _, err := runFfprobe(ffprobeArgs)
 	if err != nil {
-		fmt.Println("getFormatBitrate error:", err, string(stdout))
+		fmt.Println("ffprobe error:", err, string(stdout))
 		return 0, err
 	}
 	bitrateStr := strings.TrimSpace(string(stdout))
 
 	bitrate, err := strconv.ParseUint(bitrateStr, 10, 32)
 	if err != nil {
-		fmt.Println("getFormatBitrate error:", err)
+		fmt.Println("parse bitrate error:", err)
 		return 0, err
 	}
 	return uint(bitrate), nil