m4a格式时长

controllers/audio.go

@@ -67,7 +67,7 @@ func (this *AudioController) UploadAudio() {
 	}
 	var duration int
 	if lowCaseExt == ".m4a" {
-
+		duration, err = m4aDuration(f)
 	}
 	if lowCaseExt == ".mp3" {
 		duration, err = mp3Duration(f)