[Mp4-tech] Help! how can i imiprove my video profile and level

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 hello every one,
     Now i use the mpeg4ip to encode my raw v/a, my video format is *.avi with 112*128, and the profile level is simple L1, i use the ffmpeg -s 4cif to improve my video resoultion, but the pix's granularity is so big and the quality is much poor, and i try to improve my videm's profile and level, howvever i don't know how to do it. and if i improve the profile and level, whethe my video quality can improve or not? 
     in a word, my question is how to improve my video resoultion and don't reduce the video quality so much.
     Regards.
                 Eric 
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡lhq haiersoft.com.cn
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2004-10-28