== how to build ffmpeg from source ==

== platform specific ==

 * in order to install ffmpeg on RHEL 5 you should use the dag repository for the dependencies
   * see http://dag.linux.iastate.edu
   * follow the instructions under Configuring yum To Use This Repository and dont forget to Install Dag's GPG Key

== getting the source ==

   * get the latest ffmpeg from svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg

== configuring dependencies ==

   * if you want full media supprt you need to get the dependencies
     * lame, faac, faad2 can be retrieved from dag: sudo yum install faac-devel.i386 faad2-devel.i386 lame-devel.i386
     * amr requires manual build and install:
       * get tarballs for both nb and wb from here: http://www.penguin.cz/~utx/amr
       * unzip, untar, for both (current versions 7.0.0) no problems building
       * for both do: ./configure, make, sudo make install

== configure and build ==

   * configure with:
     * ./configure --enable-shared --disable-static --disable-vhook --enable-libamr-nb --enable-libamr-wb --enable-libmp3lame --enable-libfaad 
     * note that for FAAD2 support you rneed to add --enable-gpl and for libamr you need to add --enable-nonfree
     * i was unable to compile with faac/faad support, even though it was intalled ffmepg couldnt locate it and so I had to disable it 

   * make, sudo make install

  * configure issues
    * if you get this error running configure 
      * Unable to create and execute files in /tmp
    * you need to update fstab and remove the noexec flag
      * make sure you add it back when finished!
    *  refer here for more info 
      * http://www.linuxadmin.org/blog/ffmpeg-installation-problem-on-the-linux/