Improved subtitles synchronization by using webrtcvad if available.

bazarr/init.py

@@ -47,7 +47,7 @@ import logging
 # deploy requirements.txt
 if not args.no_update:
     try:
-        import lxml, numpy
+        import lxml, numpy, webrtcvad
     except ImportError:
         try:
             import pip

bazarr/subsyncer.py

@@ -16,7 +16,12 @@ class SubSyncer:
         self.srtout = None
         self.ffmpeg_path = None
         self.args = None
-        self.vad = 'subs_then_auditok'
+        try:
+            import webrtcvad
+        except ImportError:
+            self.vad = 'subs_then_auditok'
+        else:
+            self.vad = 'subs_then_webrtc'
         self.log_dir_path = os.path.join(args.config_dir, 'log')
 
     def sync(self, video_path, srt_path, srt_lang, media_type, sonarr_series_id=None, sonarr_episode_id=None,

requirements.txt

@@ -1,2 +1,3 @@
 lxml>=4.3.0
 numpy>=1.12.0
+webrtcvad-wheels>=2.0.10