木易的技术记录sudo add-apt-repository ppa:kirillshkrogalev/ffmpeg-next
sudo apt-get update
sudo apt-get install ffmpeg
测试：
ffmpeg -i “ddd.mp4” -y -ab 32 -ar 22050 a.flv
另一个方法安装ffmpeg
To install ffmpeg, create a file called install-ffmpeg.sh and copy-and-paste in the following script.
sudo apt-get install build-essential git-core checkinstall yasm texi2html libvorbis-dev libx11-dev libvpx-dev libxfixes-dev zlib1g-dev pkg-config netcat libncurses5-dev
FFMPEG_VERSION=2.3.3
cd /usr/local/src
if [ ! -d “/usr/local/src/ffmpeg-${FFMPEG_VERSION}” ]; then
sudo wget “http://ffmpeg.org/releases/ffmpeg-${FFMPEG_VERSION}.tar.bz2”
sudo tar -xjf “ffmpeg-${FFMPEG_VERSION}.tar.bz2”
fi
cd “ffmpeg-${FFMPEG_VERSION}”
sudo ./configure –enable-version3 –enable-postproc –enable-libvorbis –enable-libvpx
sudo make
sudo checkinstall –pkgname=ffmpeg –pkgversion=”5:${FFMPEG_VERSION}” –backup=no –deldoc=yes –default
Next, make the script executable and run it.
$ chmod +x install-ffmpeg.sh
$ ./install-ffmpeg.sh
After the script finishes, check that ffmpeg is installed by typing the command ffmpeg -version. You should see the following
$ ffmpeg -version
ffmpeg version 2.3.3 Copyright (c) 2000-2014 the FFmpeg developers
built on Aug 18 2014 17:35:05 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: –enable-version3 –enable-postproc –enable-libvorbis –enable-libvpx
libavutil 52. 92.100 / 52. 92.100
libavcodec 55. 69.100 / 55. 69.100
libavformat 55. 48.100 / 55. 48.100
libavdevice 55. 13.102 / 55. 13.102
libavfilter 4. 11.100 / 4. 11.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100