Well the intrest in this subject seems to be picking up!

I am currently researching two pass encoding using libx264 and libfaac to allow low bitrate (fast loading) HD streaming.

As I figure this out you can see the results here: http://www.saiweb.co.uk/linux/very-basic-c-gdb-tutorial

The embeding is handeled using a wordpress plugin I have written, I will make this available shortly.

I will be getting part one “FFMPEG” installation up today regardless.

Just try to find documentation on this … absolute nightmare is an understatement, so here are my notes of the steps I took to compile ffmpeg with a selection of codecs:


up2date automake autoconf libtool
wget http://downloads.sourceforge.net/faac/faac-1.26.tar.gz
wget http://downloads.sourceforge.net/faac/faad2-2.6.1.tar.gz
wget http://superb-west.dl.sourceforge.net/sourceforge/lame/lame-3.98b6.tar.gz
wget http://downloads.xiph.org/releases/ogg/libogg-1.1.3.tar.gz
wget http://downloads.xiph.org/releases/theora/libtheora-1.0beta2.tar.gz
wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.2.0.tar.gz
wget http://downloads.xvid.org/downloads/xvidcore-1.1.3.tar.gz
wget ftp://ftp.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-20080805-2245.tar.bz2


NOTE: The above are current at the time of writing, check for more recent versions at the relevant sites.

Extract:


for i in *.tar.gz; do tar -xzvf "$i"; done
for i in *.tar.bz2; do tar -xjvf "$i"; done


cd to relevant directories and run the following:

faac & faad2: ./bootstrap && ./configure && make && make install
xvidcore: cd build/generic; ./configure && make && make install
libx264: ./configure –enable-shared –disable-asm && make && make install
The rest: ./configure && make && make install

NOTE: You must install libogg prior to libvorbis and libtheora

The following is required otherwise ffmpeg will display errors about being unable to find libraries:

i.e.


ffmpeg: error while loading shared libraries: libavdevice.so.52: cannot open shared object file


FIX:


echo '/usr/local/lib' > /etc/ld.so.conf.d/buzz-saiweb.conf
ldconfig


You must run “ldconfig” any time you install a new lib you want to use with ffmpeg!

Install FFMPEG

svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg

make install


NOTE: If you allready havea checkout of ffmpeg and run an update to get the latest code, make sure you run


make distclean


Prior to running the configure line.

et voila job done ….

The information for this is VERY very sparse, so here is a summary of what I have found.

Install libx264

Get the libx264 package from here: http://www.videolan.org/developers/x264.html

Extracts the bz2 file


tar -xjvf /path/to/x264-snapshot-20080805-2245.tar.bz2


And now the useual


cd /path/to/x264-dir
./configure --enable-shared
make
make install
ldconfig


Get a nice error message:


[root@dev01 x264-snapshot-20080805-2245]# ./configure
No suitable assembler found. Install ‘yasm’ to get MMX/SSE optimized code.
If you really want to compile without asm, configure with –disable-asm.


You do want MMX/SSE at somepoint for the time being I am disabling this though (lack of time to find a valid RHEL source). so I added the disable asm line.

Install ffmpeg

For this I use subversion.


cd /path/to/where/I/want/sources
svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
cd /path/to/where/I/want/sources/ffmpeg
./configure --enable-libx264 --enable-gpl --enable-shared
make
make install


et voila ffmpeg is now installed with libx264 (h264).

error while loading shared libraries: libavdevice.so.52: cannot open shared object file: No such file or directory

To fix this:


vi /etc/ld.so.conf.d/custom-libs.conf


Add the line : /usr/local/lib

And run ldconfig.

UPDATE: I am writing a full set of notes blog entry for installing ffmpeg with codecs on RHEL4