sync status when encode finish
duplicate utils
Merge branch 'master' of http://github.com/micanzhang/codex

Conflicts:
	python/py-ffmpeg-wrapper/errors.pyc
	python/py-ffmpeg-wrapper/video_encoder.py
	python/py-ffmpeg-wrapper/video_encoder.pyc
	python/py-ffmpeg-wrapper/video_inspector.pyc
	python/py-ffmpeg-wrapper/video_test.py