fix remux

pandora/archive/extract.py

@@ -733,19 +733,24 @@ def remux_stream(src, dst):
     cmd = [
         settings.FFMPEG,
         '-nostats', '-loglevel', 'error',
-        '-map_metadata', '-1', '-sn',
         '-i', src,
+        '-map_metadata', '-1', '-sn',
     ] + video + [
     ] + audio + [
         '-movflags', '+faststart',
         dst
     ]
+    print(cmd)
     p = subprocess.Popen(cmd, stdin=subprocess.PIPE,
-                         stdout=open('/dev/null', 'w'),
-                         stderr=open('/dev/null', 'w'),
+                         stdout=subprocess.PIPE,
+                         stderr=subprocess.STDOUT,
                          close_fds=True)
-    p.wait()
-    return True, None
+    stdout, stderr = p.communicate()
+    if stderr:
+        logger.error("failed to remux %s  %s", cmd, stderr)
+        return False, stderr
+    else:
+        return True, None
 
 
 def ffprobe(path, *args):

pandora/archive/models.py

@@ -821,7 +821,10 @@ class Stream(models.Model):
                 done = True
             elif self.file.can_remux():
                 ok, error = extract.remux_stream(media, target)
-                done = True
+                if ok:
+                    self.available = True
+                    self.save()
+                    done = True
         if not done:
             ok, error = extract.stream(media, target, self.name(), info, flags=self.flags)