7. API / SDK DirectX Video Acceleration (DxVA) windows only Open Video Decode (OVD) form AMD Video Acceleration (VA) Video Decode Acceleration Framework (VDAF) Mac os x only Video Decode and Presentation API for Unix (VDPAU) Video ToolBox . Mac os x and Apple TV only X-Video Bitstream Acceleration (XvBA) X11`s DxVA X-Video Motion Compensation X11`s MPEG-2 codec
8. API / SDK Useable Video Acceleration (VA) Video Decode and Presentation API for Unix (VDPAU)
15. sandy bridge NOT support by x264 NO Found document pure hardware implement
16. CUDA CUDA GPU H.264 - 23.5s 114.4 FPSx264 preset ultrafast - 30s 90.8 FPS x264 do generate better quality encoder “nvcuenc” NOT in SDK NO document NOT support 2pass yet