Doom9's Forum - View Single Post - RGB32 -> YV12, keeping chroma information by 2xpoint?

Aktan · 26th May 2014, 01:34

Nice answer SEt. What I don't get in your sample code is why you did "src_left=0.25, src_top=-0.25". I kind of understand src_top=-.25, but since default placement in Avisynth is MPEG2, wouldn't it just be src_top=-0.5? At least in my limited test that also seems to work.

Edit: For MPEG1 placement, this seems to work:

Code:

ConvertToYV24(matrix="PC.601")
YToUV(UToY(), VToY(), PointResize(2*last.width, 2*last.height, src_left=-0.5, src_top=-0.5))
ConvertToRGB32(chromaresample="point", matrix="PC.601", ChromaInPlacement="MPEG1")

26th May 2014, 01:34	#5 \| Link
Aktan Registered User Join Date: Feb 2002 Posts: 303	Nice answer SEt. What I don't get in your sample code is why you did "src_left=0.25, src_top=-0.25". I kind of understand src_top=-.25, but since default placement in Avisynth is MPEG2, wouldn't it just be src_top=-0.5? At least in my limited test that also seems to work. Edit: For MPEG1 placement, this seems to work: Code: ConvertToYV24(matrix="PC.601") YToUV(UToY(), VToY(), PointResize(2last.width, 2last.height, src_left=-0.5, src_top=-0.5)) ConvertToRGB32(chromaresample="point", matrix="PC.601", ChromaInPlacement="MPEG1") Last edited by Aktan; 26th May 2014 at 01:41.