diff --git a/generate.py b/generate.py
index 39b0af3..cb5e89b 100644
--- a/generate.py
+++ b/generate.py
@@ -686,7 +686,7 @@ def wan_reference_to_video(foreground, background, keep=False):
             background_url,
         ],
         "aspect_ratio": "16:9",
-        "resolution": "1080p",
+        "resolution": "720p",
         "enable_prompt_expansion": False,
         "multi_shots": True,
         "enable_safety_checker": False
@@ -788,7 +788,7 @@ def ltx_a2v(item, character, prompt=None, first_frame=None, keep=False):
     ox.net.save_url(output_url, output, overwrite=True)
     ai = add_ai_variant(item, output, "ai:audio-to-video")
     ai.data["model"] = model
-    ai.data["prompt"] = prompt
+    ai.data["prompt"] = ox.escape_html(prompt)
     ai.data["seed"] = result["seed"]
     ai.save()
     first_frame.add(ai)
@@ -930,12 +930,12 @@ def describe_item(item, neutral=False):
     if isinstance(item, str):
         item = Item.objects.get(public_id=item)
     if item.get("prompt") and neutral:
-        return item.get("prompt")
+        return ox.decode_html(item.get("prompt"))
     video_url = public_video_url(item)
     prompt = describe_video(video_url, neutral)
     if neutral:
         item.refresh_from_db()
-        item.data["prompt"] = prompt
+        item.data["prompt"] = ox.escape_html(prompt)
         item.save()
     return prompt
 
@@ -1510,6 +1510,9 @@ def process_reshoot_firstframe(character='P1'):
                     item.refresh_from_db()
                     add_tag(item, 'ai-failed')
                     print('>> failed', item)
+                    continue
+            if not first_frame:
+                continue
             if first_frame.items.filter(data__type__icontains='ai:').exists():
                 continue
             print(item, first_frame)
@@ -1527,7 +1530,7 @@ def process_motion_firstframe(character="P1", keep=False):
         if ai.exists() or 'ai-failed' in item.data.get('tags', []):
             print('>> skip', item)
             continue
-        print(i)
+        print(item)
         try:
             replace_character_motion_control(item, character, keep=keep)
         except:
diff --git a/management/commands/update_subtitles.py b/management/commands/update_subtitles.py
index e103375..1b39dfa 100644
--- a/management/commands/update_subtitles.py
+++ b/management/commands/update_subtitles.py
@@ -13,7 +13,7 @@ class Command(BaseCommand):
 
     def add_arguments(self, parser):
         parser.add_argument('--prefix', action='store', dest='prefix', default=default_prefix, help='prefix to build clips in')
-        parser.add_argument('--offset', action='store', dest='offset', default="1024", help='inital offset in pi')
+        parser.add_argument('--offset', action='store', dest='offset', default=None, help='inital offset in pi')
 
     def handle(self, **options):
         update_subtitles(options)
diff --git a/render.py b/render.py
index 4ac80ac..905fb2c 100644
--- a/render.py
+++ b/render.py
@@ -98,7 +98,7 @@ def compose(clips, fragment, target=150, base=1024, voice_over=None, options=Non
                     ai_clips.append(clip)
                 else:
                     non_ai_clips.append(clip)
-        if ai_length < target * 0.6 and ai_clips:
+        if ai_length < target * 0.7 and ai_clips:
             clip = random_choice(seq, ai_clips, pop=True)
             clip["use_ai"] = True
             selected_clips.append(clip)
@@ -825,9 +825,16 @@ def load_defaults(options):
 
 def update_subtitles(options):
     import item.models
-
     options = load_defaults(options)
     prefix = Path(options['prefix'])
+
+    if options['offset'] is None:
+        offsets = [int(folder) for folder in os.listdir(prefix / 'render') if folder.isdigit()]
+        for offset in offsets:
+            options['offset'] = offset
+            update_subtitles(options)
+        return
+
     base = int(options['offset'])
     lang, tlang = parse_lang(options["lang"])
 
@@ -1052,7 +1059,6 @@ def generate_clips(options):
             if '-a-t' in variant:
                 b_variant = variant.replace('-a-t', '-b-t').split('-t')[0]
                 for old in voice_over[fragment][type]:
-                    print(type(old))
                     if isinstance(old, list) and old[0]['variant'].startswith(b_variant):
                         old.insert(0, vo_variant)
                         done = True