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FFmpeg — here we go again

By on November 12, 2009 in CFML, Development, linux, open source

My two other posts on FFmpeg entitled “Installing ffmpeg on CentOS 5” and “SELinux with ffmpeg” already explained in deep how to get FFmpeg up and running.

Unfortunately, today one of our servers just reported a plain:

ffmpeg: error while loading shared libraries: libfaad.so.0: cannot open shared object file: No such file or directory

when trying to run any ffmpeg command. Now, what was that and foremost why? Especially, since it worked 2 days ago. I guess, “someone” must have done some update. In any case, it was a good lesson to reinstall ffmpeg and bring all libraries up to date.

So, since my last installation, some things must have obviously been changed behind the scenes, because when I tried to configure ffmpeg with the same commands I run into another error which was:

libx264 version must be >= 0.78

Even thought I installed x264 from the latest GIT repository it still showed me the above error! Looking around the Videolan.org website I saw that the nightly snapshots differ in size a lot. So, either their nightly script is broken or something else is going on. In any case, I went with the x264-snapshot-20091031-2245 one.

Configured and installed it. Then did a “ldconfig -v” (in order to see that it really took the latest one) and went on with the ffmpeg configuration (I took the latest code from SVN (Revision 20525)) and low and behold, everything compiled and installed without problem.

Important: Update your libraries after the installation of ffmpeg again with “ldconfig”! Else you will get the “ffmpeg: error while loading shared libraries: ….” error again.

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SELinux and FFMpeg

By on September 28, 2009 in linux, open source

SELinux is a good thing, but it also requires you to watch out on some libraries. Sometimes, something just fails, because SELinux does not allow it to run. This so happens when you have SELinux installed and want to run FFMpeg.

I just run into this when I tried to run FFMpeg and got this error message:

“error while loading shared libraries: /usr/lib/libavcodec.so.52: cannot restore segment prot after reloc: Permission denied”

In order to run FFMpeg without problems I had to add the remove the restrictions for SELinux with:

chcon -t textrel_shlib_t ‘/usr/lib/libavutil.so.49.15.0′
chcon -t textrel_shlib_t ‘/usr/lib/libavcodec.so.52.20.0′
chcon -t textrel_shlib_t ‘/usr/lib/libavformat.so.52.31.0′
chcon -t textrel_shlib_t ‘/usr/lib/libavformat.so.52.31.0′
chcon -t textrel_shlib_t ‘/usr/lib/libswscale.so.0.7.1′

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Installing FFMpeg on CentOS/RedHat 5.x successfully

By on February 24, 2009 in linux

My primary Linux distribution of choice is CentOS. CentOS is an Enterprise-class Linux Distribution derived from sources freely provided to the public by RedHat. Thus CentOS is merely speaking a copy of RedHat and provides the same stability and security.

The trade off with stability and security is, that you mostly run packages which are not cutting edge and thus you run into issues where you need the cutting edge. This is the case with FFMpeg.

There is a DAG repository that give you FFMpeg in the yum installation, but that version is not working with libx264 or libfaac and still uses the older way of and might break some applications.

Thus I set out to find the best way to install FFMpeg. Since FFMpeg depends on a lot of external libraries we first have to install this external libraries.

Please follow the below steps one by one to install FFMpeg on CentOS/RedHat 5.x. successfully. Some of these libraries might be older (some even from 2008), thought I used what worked best for me and were stable in production environment.

Lets create a directory first
mkdir -p /opt/ffmpeg-packages
cd /opt/ffmpeg-packages

Installing FAAD2
wget http://downloads.sourceforge.net/faac/faad2-2.6.1.tar.gz
tar zxf faad2-2.6.1.tar.gz
cd faad2
autoreconf -vif
./configure –disable-drm –disable-mpeg4ip
make && make install

Installing FAAC
wget http://downloads.sourceforge.net/faac/faac-1.26.tar.gz
tar zxfv faac-1.26.tar.gz
cd faac
./bootstrap
./configure –disable-mp4v2
make && make install

Installing LAME
wget http://superb-east.dl.sourceforge.net/sourceforge/lame/lame-3.98b8.tar.gz
tar zxfv lame-3.98b8.tar.gz
cd lame-3.98b8
./configure
make && make install

Installing yasm
wget http://www.tortall.net/projects/yasm/releases/yasm-0.7.0.tar.gz
tar zfvx yasm-0.7.0.tar.gz
cd yasm-0.7.0
./configure
make && make install

Installing x264

FFMpeg requires that you get the latest x264 codec. Thus we use the latest from their GIT repository.

git clone git://git.videolan.org/x264.git
cd x264
./configure –enable-shared –prefix=/usr && make && sudo make install

Installing Xvid
wget http://downloads.xvid.org/downloads/xvidcore-1.2.1.tar.gz
tar zxfv xvidcore-1.2.1.tar.gz
cd xvidcore/build/generic
./configure
make && make install

Installing FFmpeg

For FFMPEG, you will need to get the latest out of SVN.

svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
cd ffmpeg
./configure –enable-gpl –enable-postproc –enable-nonfree –enable-postproc \
–enable-libfaad –enable-avfilter –enable-pthreads –enable-libxvid \
–enable-libx264 –enable-libmp3lame –enable-libfaac –disable-ffserver –disable-ffplay
make
make install

The “make” of FFmpeg can take up to 5 minutes, so please be patience. I also disable “FFServer” and “FFplay” on my servers. Please adjust to your environment.

Hope this helps.

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