Add possibility to use --all-audio

transcoder/transcode_dvd.py

@@ -132,15 +132,21 @@ class Dvd:
             "HandBrakeCLI",
             "--preset",
             handbrake_preset,
-            "--audio-lang-list",
-            HANDBRAKE_AUDIO_LANG_LIST,
-            "--first-audio",
             "--input",
             self.dvd_path,
             "--output",
             output_file,
         ]
 
+        if HANDBRAKE_AUDIO_LANG_LIST.strip() == "":
+            args += ["--all-audio"]
+        else:
+            args += [
+                    "--audio-lang-list",
+                    HANDBRAKE_AUDIO_LANG_LIST,
+                    "--first-audio"]
+
+
         if os.path.exists(self.nodvdnav_file):
             args += ["--no-dvdnav"]
             self.append_line_to_logfile(