* Added shell script for preparing distfile.

* Added unitests.
 * Added mocks for video files.
 * Added midentify module.

src/lib/midentify.py

@@ -0,0 +1,63 @@
+# This Python file uses the following encoding: utf-8
+
+from os import popen
+from sys import argv, exit
+
+class Midentify(object):
+    """Class for retrive midentify script output and put it in dict.
+    Usually there is no need for such a detailed movie/clip information.
+    Midentify script belongs to mplayer package.
+    """
+    
+    def __init__(self, filename):
+        """Init class instance. Filename of a video file is required."""
+        self.filename = filename
+        self.tags = {}
+        
+    def get_data(self):
+        """return dict with clip information"""
+        output = popen("midentify \"%s\"" % self.filename).readlines()
+        for line in output:
+            line = line.strip()
+            if "ID_VIDEO_WIDTH" in line:
+                self.tags['width'] = line.replace("ID_VIDEO_WIDTH=", "")
+            elif "ID_VIDEO_HEIGHT" in line:
+                self.tags['height'] = line.replace("ID_VIDEO_HEIGHT=", "")
+            elif "ID_LENGTH" in line:
+                length = line.replace("ID_LENGTH=", "")
+                if "." in length:
+                    length = length.split(".")[0]
+                seconds = int(length)
+                if seconds > 0:
+                    hours = seconds / 3600
+                    seconds -= hours * 3600
+                    minutes = seconds / 60
+                    seconds -= minutes * 60
+                    self.tags['length'] = length
+                    length_str = "%02d:%02d:%02d" % (hours, minutes, seconds)
+                    self.tags['duration'] = length_str
+            elif "ID_DEMUXER" in line:
+                self.tags['container'] = line.replace("ID_DEMUXER=", "")
+            elif "ID_VIDEO_FORMAT" in line:
+                self.tags['video_format'] = line.replace("ID_VIDEO_FORMAT=", "")
+            elif "ID_VIDEO_CODEC" in line:
+                self.tags['video_codec'] = line.replace("ID_VIDEO_CODEC=", "")
+            elif "ID_AUDIO_CODEC" in line:
+                self.tags['audio_codec'] = line.replace("ID_AUDIO_CODEC=", "")
+            elif "ID_AUDIO_FORMAT" in line:
+                self.tags['audio_format'] = line.replace("ID_AUDIO_FORMAT=", "")
+            elif "ID_AUDIO_NCH" in line:
+                self.tags['audio_no_channels'] = line.replace("ID_AUDIO_NCH=",
+                                                              "")
+        return self.tags
+
+
+if __name__ == "__main__":
+    """run as standalone script"""
+    if len(argv) < 2:
+        print "usage: %s filename" % argv[0]
+        exit()
+        
+    for arg in argv[1:]:
+        mid = Midentify(arg)
+        print mid.get_data()