blindpp是DGDecode的一个参数，说明如下
BlindPP(clip, int "quant", int "cpu", bool "iPP", int "moderate_h", int "moderate_v", str "cpu2")
Deblock and/or Dering any video source.
Requires YUY2 or YV12 input.
Please see Appendix A for usage notes.
quant: 0 to 31 (default: 2)
Emulated Quantizer.
Specifies strength of the deblocking process.
cpu: 0 to 6 (default: 6)
Same function as in MPEG2Source(), but with different default value.
iPP: true/false (default: false)
Same function as in MPEG2Source(), but with different default value.
Automatic-mode is NOT available.
moderate_h, moderate_v, cpu2: (defaults: moderate_h=20, moderate_v=40, cpu2="")
Same functions as in MPEG2Source(), but with different default values.
deblock滤镜的话看这里
http://avisynth.org/mediawiki/External_filters#Deblocking
