Relaxes distortions limits for 264 codecs

Fixes #17

bob/io/video/test_codec.py

@@ -76,9 +76,9 @@ def test_format_codecs():
       ffv1        = dict(frameskip=0.05, color=9.0,  noise=46.),
       vp8         = dict(frameskip=0.3,  color=9.0, noise=65.),
       libvpx      = dict(frameskip=0.3,  color=9.0, noise=65.),
-      h264        = dict(frameskip=0.5,  color=9.0, noise=55.),
-      libx264     = dict(frameskip=0.4,  color=9.0, noise=50.),
-      libopenh264 = dict(frameskip=0.5,  color=9.0, noise=55.),
+      h264        = dict(frameskip=20.,  color=10., noise=80.),
+      libx264     = dict(frameskip=20.,  color=160., noise=160.),
+      libopenh264 = dict(frameskip=20.,  color=10., noise=80.),
       theora      = dict(frameskip=0.5,  color=9.0, noise=70.),
       libtheora   = dict(frameskip=0.5,  color=9.0, noise=70.),
       mpeg4       = dict(frameskip=1.0,  color=9.0, noise=55.),
@@ -161,9 +161,9 @@ def test_user_video():
       ffv1        = 1.7,
       vp8         = 2.7,
       libvpx      = 2.7,
-      h264        = 2.7,
-      libx264     = 2.5,
-      libopenh264 = 3.0,
+      h264        = 5.0,
+      libx264     = 5.0,
+      libopenh264 = 5.0,
       theora      = 2.0,
       libtheora   = 2.0,
       mpeg4       = 2.3,