Add movie converter worker

worker/musik.py

@@ -14,6 +14,16 @@ class ytd(youtube_dl.YoutubeDL):
         youtube_dl.YoutubeDL.__init__(self, params)
 
 
+def convert_file(path, preferredcodec=None, preferredquality=u"5"):
+    y = ytd()
+    pp = youtube_dl.postprocessor.FFmpegExtractAudioPP(y, preferredcodec=preferredcodec, preferredquality=preferredquality)
+    try:
+        pp.run({'filepath': path})
+    except Exception as e:
+        return e.msg
+
+    return ""
+
 def get_extractor(url):
     """Get first matching extractor for the given URL"""
     extractors = youtube_dl.extractor.gen_extractors()