- <li><b>python</b> -
- <li><b>vega</b> - OpenVG 1.x state tracker
- <li><b>wgl</b> -
- <li><b>xorg</b> - Meta state tracker for Xorg video drivers
+ <li><b>wgl</b> - Windows WGL state tracker
+ <li><b>xa</b> - XA state tracker
+ <li><b>xvmc</b> - XvMC state tracker
+ <li><b>vdpau</b> - VDPAU state tracker
+ <li><b>va</b> - VA-API state tracker
+ <li><b>omx_bellagio</b> - OpenMAX Bellagio state tracker