render fixes, encode vides in render command

render.py

@@ -14,7 +14,9 @@ def random_choice(seq, items, pop=False):
     n = n_ = len(items) - 1
     #print('len', n)
     if n == 0:
-        return items[0]
+        if pop:
+            return items.pop(n)
+        return items[n]
     r = seq()
     base = 10
     while n > 10:
@@ -50,9 +52,12 @@ def compose(clips, target=150, base=1024):
             'A4': [],
         }
     }
+    all_clips = clips.copy()
     seq = random(base)
     while target - length > 10 and clips:
         clip = random_choice(seq, clips, True)
+        if not clips:
+            clips = [c for c in all_clips if c != clip]
         if length + clip['duration'] > target:
             break
         length += clip['duration']
@@ -112,6 +117,7 @@ def compose(clips, target=150, base=1024):
 
 def render(root, scene, prefix=''):
     fps = 24
+    files = []
     for timeline, data in scene.items():
         print(timeline)
         project = KDEnliveProject(root)
@@ -121,6 +127,8 @@ def render(root, scene, prefix=''):
             print(track)
             for clip in clips:
                 project.append_clip(track, clip)
-
-        with open(os.path.join(root, prefix + "%s.kdenlive" % timeline), 'w') as fd:
+        path = os.path.join(root, prefix + "%s.kdenlive" % timeline)
+        with open(path, 'w') as fd:
             fd.write(project.to_xml())
+        files.append(path)
+    return files