Have same problems
You say is need php5 am run php4 and can't changes to php5

Maby you shut changes you buy infomations you write here

Requirements
MySQL (version 4 or higher)
PHP (version 4.x)
Fmpeg (http://ffmpeg.mplayerhq.hu)
FFmpeg-PHP (http://ffmpeg-php.sourceforge.net)
Mplayer + Mencoder (http://www.mplayerhq.hu/design7/dload.html)
flvtool2 (http://inlet-media.de/flvtool2)
Libogg + Libvorbis (http://www.xiph.org/downloads)
LAME MP3 Encoder (http://lame.sourceforge.net)
Zend Optimizer
Click here for details
soruce http://www.buyscripts.in/youtube_clone.html
ware I has pay

Maby any way to fix is?