Corrects the video codec bug.

Thanks to SO (once again), it appears that to be correct, the video has to have this relation :
(channels * width) i a multiple of 4

The method has to be integrated into Facemovie_lib

test/fix_crop.py

@@ -2,12 +2,41 @@
 import os
 import cv
 
+
+
+def resizes_for_video_codec(frameSize):
+  """
+  Searches for the closest couple of frameSize so that width*height is a multiple of 4 to avoid weird image encoding.
+  """
+  try:
+    x,y = frameSize
+  except ValueError:
+    print "ERROR: unknown format for frameSize "
+    return (0, 0)
+  
+  if not(isinstance(x, int)) or not(isinstance(x, int)):
+    print "ERROR: method expects two integers"
+    return (0, 0)    
+
+  while ((x * 3) % 4) != 0:
+    x += 1  
+
+  print frameSize
+  print x, y
+
+  return (x, y)
+
 in_dir = "../data/inputs/sample-test"
 out = "output.avi"
 
 
 # loading images, create Guys and store it into guys
-frameSize = (652, 498)
+frameSize = (1257, 499)
+
+
+frameSize = resizes_for_video_codec(frameSize)
+
+
 #frameSize = (453, 325)
 fourcc = cv.CV_FOURCC('F', 'M', 'P', '4')
 my_video = cv.CreateVideoWriter(out,