I use sample_decode.exe to decode H264(720P) with/without the "-hw" option on Sandbridge system(3GHz, 8GB, windows 7 64Bit). The test uses the system memory(not 3D3 surface). The results are as the followings:
Software implementation(without "-hw"): 1497 fps.
Hardware implementation(with "-hw"): 556 fps.
My question is that whythe performance of using hardware accelerationis slow thanusing software implementation.
Thank you in advance!