Ioannis Vranos wrote:

Hi, I have a Pentium III PC with NVIDIA GeForce 7300GT on an AGP 8x and am running NVIDIA driver 9755 on CentOS 5.0 x86.

What is the most efficient playback method for the various players, XVideo or OpenGL? RealPlayer has a "Use XVideo" tick box under the "Hardware" tab preselected, while MPlayer uses xv - X11/Xv, gl - X11(OpenGL) and other Video drivers. What is the most efficient between the two, given the configuration?

Depends on what you are doing. XVideo will not work for games obviously. However, as you seem to indicate, Real Player may not support using gl acceleration. So I think if you are looking at players, you are pretty much stuck to XVideo.