ffmpeg求助

[yixi83]

现在想做视频转换(WIN VC平台)，但是转出来的文件声音有问题，好多杂音。
有没人能够给点建议怎样改正？
怎样从一个有音视频的文件里（比如AVI，MPG，3GP....）取出声音数据,对其解码,再编码成一个新文件(MP3,MP2,3GP...)??就是文件转换了.有谁可以提供一个代码例子吗?万分感激!!!!!

[seanzh]

you can visit the ffmpeg's official site for some help,
or there is a google group for ffmpeg here:
http://groups.google.com/group/smartAV

also, ffmpeg's official site, as well as ffmpeg's mailing list, is a good choice for you.

[seanzh]

as to this question,
maybe you need the following APIs:
avcodec_read_frame, write_frame,
and you can judge the packets' type: video/audio...

[yixi83]

可以给点例子吗？急需啊
谢谢