diff --git a/encode.py b/encode.py
index ce98399..88ad69c 100755
--- a/encode.py
+++ b/encode.py
@@ -17,7 +17,7 @@ def get_videoduration(video):
     p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     stdout, stdin = p.communicate()
     data = json.loads(stdout.decode())
-    duration = float([s for s in data['streams'] if 'width' in s][0]['duration']) - 10/60
+    duration = float([s for s in data['streams'] if 'width' in s][0]['duration']) - 70/60
     return '%0.3f' % duration
 
 for xml in sorted(glob('output/*/*.xml')):
diff --git a/render.py b/render.py
index d9825be..319e9d3 100755
--- a/render.py
+++ b/render.py
@@ -178,6 +178,7 @@ def filter_clips(clips, duration, max_duration=0):
 def sequence(seq, letter):
     tags = KEYWORDS[letter]
     clips = {tag: get_clips(tag) for tag in tags}
+    all_clips = clips.copy()
     result = {
         'clips': [],
         'text': [],
@@ -195,10 +196,11 @@ def sequence(seq, letter):
 
         max_duration = MAX_DURATION - duration
         clips_n = filter_clips(clips, n, max_duration)
-        tags_n = []
-        for tag in tags:
-            if tag in clips_n:
-                tags_n.append(tag)
+        tags_n = [tag for tag in tags if tag in clips_n]
+        if not tags_n:
+            print('MISSING CLIPS, fall back to all clips!', letter, n)
+            clips_n = filter_clips(all_clips, n, max_duration)
+            tags_n = [tag for tag in tags if tag in clips_n]
         if not tags_n:
             print('NO tags for', letter, n)
             sys.exit(1)
@@ -208,6 +210,10 @@ def sequence(seq, letter):
         clip = random_choice(seq, clips_n[tag])
         duration += clip['duration']
         result['clips'].append(clip.copy())
+
+        # no reuse
+        for t in clips:
+            clips[t] = [c for c in clips[t] if not c['id'] == clip['id']]
     '''
     for clip in result['clips']:
         if seq() == 0:
diff --git a/render_mlt.py b/render_mlt.py
index 8797b77..372714a 100755
--- a/render_mlt.py
+++ b/render_mlt.py
@@ -86,6 +86,7 @@ for clip in data['clips']:
         in_ = int(clip['in'] * fps)
         frames = int(clip['duration'] * fps)
         add_clip(video, clip['path'], in_, frames)
+add_color(video, 'black', 60)
 
 for clip in data['text']:
     if clip.get('blank'):