using ffmpeg command line with python's subprocess module

[iMath]

在 2013年12月6日星期五UTC+8下午5时23分59秒，Mark Lawrence写道：
> On 06/12/2013 06:23, iMath wrote:
> 
> 
> 
> Dearest iMath, wouldst thou be kind enough to partake of obtaining some 
> 
> type of email client that dost not sendeth double spaced data into this 
> 
> most illustrious of mailing lists/newsgroups.  Thanking thee for thine 
> 
> participation in my most humble of requests.  I do remain your most 
> 
> obedient servant.
> 
> 
> 
> -- 
> 
> My fellow Pythonistas, ask not what our language can do for you, ask 
> 
> what you can do for our language.
> 
> 
> 
> Mark Lawrence

yes ,I am a native Chinese speaker.I always post question by Google Group not through  email ,is there something wrong with it ?
your english is a little strange to me .