用于编译ffmpeg时需要用到的工具，刚好收集全了。有需要的可以自由下载

windowsXP/2003平台安装ffmpeg所需安装包!-windowsXP/2003 platform required to install ffmpeg installation package!

bash-3.1-MSYS-1.0.11-1.tar.bz2 for compilation of ffmpeg in windows. copy bash.exe to mingw/bin

MSYS is a collection of GNU utilities such as bash, make, gawk and grep to allow building of applications and programs which depend on traditionally UNIX tools to be present. It is intended to supplement MinGW and the deficiencies of the cmd shell.