Totem Movie Player will playback Logitech Security camera videos in realtime.

These MPEG packages are installed on an i686 system:

# rpm -qa |grep mpeg | sort
ffmpeg-0.6.5-1.el6.rf.i686
ffmpeg-libpostproc-0.6.5-1.el6.rf.i686
gstreamer-ffmpeg-0.10.11-1.el6.rf.i686
libmpeg2-0.5.1-2.el6.rf.i686

Just this package is installed on an x86_64 system:

# rpm -qa |grep mpeg 
gstreamer-ffmpeg-0.10.11-1.el6.rf.x86_64

To install the gstreamer-ffmpeg package, do the following:

• Install RPMFORGE repo following instructions at http://wiki.centos.org/AdditionalResources/Repositories/RPMForge#head-f0c3ecee3dbb407e4eed79a56ec0ae92d1398e01
• yum install gstreamer-ffmpeg

Start totem:

alias totem='totem --no-existing-session'
alias totemback='totem --no-existing-session rtsp://X.X.X.X/HighResolutionVideo'