render fixes, encode vides in render command

management/commands/render.py

@@ -1,5 +1,6 @@
 import json
 import os
+import subprocess
 
 from django.core.management.base import BaseCommand
 from django.conf import settings
@@ -14,6 +15,7 @@ class Command(BaseCommand):
         parser.add_argument('--prefix', action='store', dest='prefix', default="/srv/t_for_time", help='prefix to build clips in')
         parser.add_argument('--duration', action='store', dest='duration', default="150", help='target duration in seconds')
         parser.add_argument('--offset', action='store', dest='offset', default="1024", help='inital offset in pi')
+        parser.add_argument('--no-video', action='store_true', dest='no_video', default=False, help='don\'t render video')
 
     def handle(self, **options):
         prefix = options['prefix']
@@ -23,7 +25,15 @@ class Command(BaseCommand):
         with open(os.path.join(prefix, "clips.json")) as fd:
             clips = json.load(fd)
         scene = compose(clips, target=target, base=base)
-        render(prefix, scene, 'scene-%s-' % base)
+        timelines = render(prefix, scene, 'scene-%s-' % base)
         with open(os.path.join(prefix, 'scene-%s.json' % base), 'w') as fd:
             json.dump(scene, fd, indent=2, ensure_ascii=False)
+        if not options['no_video']:
+            for timeline in timelines:
+                cmd = [
+                    'xvfb-run', '-a',
+                    'melt', timeline,
+                    '-consumer', 'avformat:%s' % timeline.replace('.kdenlive', '.mp4')
+                ]
+                subprocess.call(cmd)