找了几天，终于找到个能用的ilbc编码的库了，网上很多都是c代码的

This is a FFmpeg win64 static build by Kyle Schwarz. Zeranoe's FFmpeg Builds Home Page: FFmpeg version: 20160425-git-9ac154d This FFmpeg build was configured with: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib