ffmpeg decode replace non utf8

indexalist/ffmpeginfo.py

@@ -42,7 +42,7 @@ def extract_duration (text):
 
 def get_info(url, data=None):
     popen = subprocess.Popen(["ffmpeg", "-i", url], stderr=subprocess.PIPE)
-    o = popen.communicate()[1].decode("utf-8")
+    o = popen.communicate()[1].decode("utf-8", errors="replace")
     if data == None:
         data = {}
     dur = extract_duration(o)