I have updated the package with a dedicated repo for mplayer and a few others that were going down. MP4Box and flvtool should also end up installed (no longerneed manually) I also fixed the ffmpeg installer where it was invoking non valid install flags with newer versions... Please use new link as of 5/2/2017 (may-5-2017)
Sooo.... Apply the guide above... Only for CB 2.8 you can use PHP 5.6+ CB 2.6.x requires php 5.3.
chmod 777 *