Unicode Error while calling convert function

[MurthyAvanithsa]

When i was trying to covert a WMV file it shows this error

Traceback (most recent call last):
File "/virtualenvs/celery/local/lib/python2.7/site-packages/celery/app/trace.py", line 240, in trace_task
R = retval = fun(_args, *_kwargs)
File "/virtualenvs/celery/local/lib/python2.7/site-packages/celery/app/trace.py", line 437, in protected_call
return self.run(_args, *_kwargs)
File "/virtualenvs/celery/inviterjobs/workers/finalvideo/tasks.py", line 38, in finalvideo
for timecode in converter_convert:
File "/virtualenvs/celery/local/lib/python2.7/site-packages/converter/ffmpeg.py", line 453, in convert
ret = ret.decode(console_encoding)
File "/virtualenvs/celery/lib/python2.7/encodings/utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xc2 in position 9: unexpected end of data

[mauricioabreu]

Show what you have done.
What was the command you issued?