安装ffmpeg

ffmpeg的github源代码路径在 https://github.com/FFmpeg/FFmpeg

git路径：https://github.com/FFmpeg/FFmpeg.git

(1) git clone  https://github.com/FFmpeg/FFmpeg.git
(2) sudo apt-get install vim git qt-sdk ctags qtmultimedia5-dev
(3) mkdir opensource
    cd openscource
    git clone  https://github.com/FFmpeg/FFmpeg.git
    sudo apt-get install libsdl2-dev
    sudo apt-get install libx264-dev
    sudo apt-get install libfaac-dev libfdk-aac-dev
    ./configure --prefix=/usr \ 
               --enable-libx264 --enable-libfdk-aac \
               --enable-gpl --enable-nonfree --disable-asm --enable-shared
    make
    sudo make install