Server Requirements:

1) Linux Server (some old distributions are not supported)
2) Apache Web Server
3) MySQL (version 4 or higher)
4) PHP (version 4.3 or higher)
PHP Configuration:
safe_mode = off
register_argc_argv = on
open_basedir = (no value)
output_buffering = on
upload_max_filesize = 200M (recommended maximum video upload size in MB)
post_max_size = 200M (recommended maximum video upload size in MB)
5) GD Library 2 or higher
6) FFmpeg (http://ffmpeg.mplayerhq.hu)
7) Mplayer + Mencoder (http://www.mplayerhq.hu/design7/dload.html)
8) flv2tool (http://inlet-media.de/flvtool2)
9) Libogg + Libvorbis (http://www.xiph.org/downloads)
10) LAME MP3 Encoder (http://lame.sourceforge.net)
11) CGI-BIN Access
12) Apache mod_rewrite Enabled
13) Must be able to run PHP from the command line (CLI) with exec()
14) Allowed execution of background processes with exec(„binary > /dev/null &”)