[MPlayer-users] Ask for help!

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Hi! I'm a student in WuHan University, Wuhan China. Recently I've downloaded your application: MPlayer-0.90pre6.When I entered libavcodec, and compiled the given example: apiexample.c, I met such problems: First, when I executed the command "make", an error occured showing that "fastmemcpy" and "quant_store" could not be found! Second, after noting out those data I got the result, but I found the encoded video file looked so bad when playing it by mplayer! I found that the value of "qscale" in function ff_rate_estimate_qscale in ratecontrol.c is zero! If I set an integer value in {1,...31} to qscale, the quality then becomes natural. So I want to understand your ratecontrol method. But the program is so confusing to me with it's big data struct like RateControlContext, etc. I will be very thankful if you could help me understand your ratecontrol method! I'll be very glad if you could tell me the IEEE artical which has discribed your method in detail!
Thank you! 
                                     Jiangshan
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