diff --git a/render.py b/render.py
index 84b3731..085a802 100644
--- a/render.py
+++ b/render.py
@@ -52,6 +52,7 @@ def compose(clips, target=150, base=1024, voice_over=None, options=None):
 
     voice_overs = []
     sub_offset = 0
+    vo_min = 0
     if voice_over:
         vo_keys = list(sorted(voice_over))
         if chance(seq, 0.5):
@@ -163,21 +164,22 @@ def compose(clips, target=150, base=1024, voice_over=None, options=None):
             }
         })
 
-        volume = '0'
+        volume_center = volume_front = '-2.5'
+        volume_rear = '-8.5'
         scene['audio-center']['A1'].append({
             'duration': clip['duration'],
-            'src': audio,
-            'filter': {'volume': cf_volume},
+            'src': audio_center,
+            'filter': {'volume': volume},
         })
         scene['audio-front']['A2'].append({
             'duration': clip['duration'],
-            'src': audio,
-            'filter': {'volume': cf_volume},
+            'src': audio_front,
+            'filter': {'volume': volume},
         })
         scene['audio-rear']['A2'].append({
             'duration': clip['duration'],
-            'src': foley,
-            'filter': {'volume': cf_volume},
+            'src': audio,
+            'filter': {'volume': volume_rear},
         })
         used.append(clip)
     print("scene duration %0.3f (target: %0.3f, vo_min: %0.3f)" % (length, target, vo_min))
@@ -304,6 +306,9 @@ def get_fragments(clips, voice_over, prefix):
                 orig = i.files.filter(selected=True).first()
                 if orig:
                     ext = os.path.splitext(orig.data.path)[1]
+                    if 'type' not in i.data:
+                        print("FIXME", i)
+                        continue
                     type_ = i.data['type'][0].lower()
                     target = os.path.join(prefix, type_, i.data['title'] + ext)
                     originals.append(target)
@@ -368,8 +373,12 @@ def render_all(options):
         clips_used += used
         scene_duration = get_scene_duration(scene)
         print("%s %6.3f -> %6.3f (%6.3f)" % (name, target, scene_duration, fragment_target))
-        src = [a for a in scene['audio-rear']['A1'] if 'src' in a][0]['src']
-        stats[src.split('/')[-2]] += 1
+        src = [a for a in scene['audio-rear']['A1'] if 'src' in a]
+        if src:
+            src = src[0]['src']
+            stats[src.split('/')[-2]] += 1
+        else:
+            print("!! fixme, chapter without VO")
 
         position += scene_duration
         target_position += fragment_target
@@ -832,11 +841,13 @@ def generate_clips(options):
 
     voice_over = defaultdict(dict)
     for vo in item.models.Item.objects.filter(
-        data__type__contains="Voice Over",
+        data__type__icontains="voice over",
     ):
-        fragment_id = int(vo.get('title').split('_')[0])
+        title = vo.get('title')
+        fragment_id = int(title.split('_')[2].replace('gen', ''))
         source = vo.files.filter(selected=True)[0]
-        batch = vo.get('batch')[0].replace('Text-', '')
+        #batch = vo.get('batch')[0].replace('Text-', '')
+        batch = title.split('_')[3]
         src = source.data.path
         target = os.path.join(prefix, 'voice_over', batch, '%s.wav' % fragment_id)
         os.makedirs(os.path.dirname(target), exist_ok=True)
diff --git a/render_utils.py b/render_utils.py
index ecffdda..f90862d 100644
--- a/render_utils.py
+++ b/render_utils.py
@@ -63,9 +63,10 @@ def get_scene_duration(scene):
     duration = 0
     for key, value in scene.items():
         for name, clips in value.items():
-            for clip in clips:
-                duration += int(clip["duration"] * 24)
-            return duration / 24
+            if clips:
+                for clip in clips:
+                    duration += int(clip["duration"] * 24)
+                return duration / 24
 
 
 def get_offset_duration(prefix):