1. Much faster, by caching half the SATDs that need to be done.
2. Warn the user if trellis 1 is enabled--and disable trellis--if psy RD is on.
3. Psy RD strength is now a decimal value with default 1.0. Don't touch it unless you have good reason.
4. Psy RD strength now automatically scales based on quantizer. This is done internally--the "strength" is a multiplier to this internal value.
901r3 --rdcmp ssd
SSIM Mean Y:0.9898778
PSNR Mean Y:47.865 U:51.782 V:51.758 Avg:48.777 Global:48.161 kb/s:12751.80
913r1 --psy-rd 0
SSIM Mean Y:0.9898778
PSNR Mean Y:47.865 U:51.782 V:51.758 Avg:48.777 Global:48.161 kb/s:12751.80
901r3 --rdcmp 1
SSIM Mean Y:0.9895693
PSNR Mean Y:47.762 U:51.628 V:51.609 Avg:48.667 Global:48.060 kb/s:13090.73
913r1 -psy-rd 1.0
SSIM Mean Y:0.9895530
PSNR Mean Y:47.757 U:51.621 V:51.603 Avg:48.661 Global:48.049 kb/s:13094.54
901r3 --rdcmp 5
SSIM Mean Y:0.9894432
PSNR Mean Y:47.696 U:51.571 V:51.557 Avg:48.604 Global:47.986 kb/s:13716.98
913r1 -psy-rd 5.0
SSIM Mean Y:0.9894326
PSNR Mean Y:47.692 U:51.573 V:51.557 Avg:48.600 Global:47.980 kb/s:13739.74
别处看到的说明与比较