Avisynth: Advice on source? half D1 for 16x9?
 

I have a movie that I had captured from TV that was broadcast in "Letterbox" and captured in 4:3. So you can imagine I have the black area across the top and bottom. I am attempting to use the latest avisynth script, but when I try to use half D 1 I get a very noticable shift of picture towards the top of the screen. The image is all there and the quality is good, but I am wondering if there is any advice towards bringing this back towards the center.

Thanks,
-trilli

Hi Trillium, If you could post your script we can help better.
Thanks
ozjeff99

Gripcrop and Gripsize are commented out (this is currently what I had encoding). When I encoded with Gripcrop and Gripsize in place, is when I noticed the apparent shift of the image towards the top of the screen (but the quality was great!) I am probably missing something very apparent, but I don't understand it. Attempt is to get it to half D 1.

Thanks!


#================================================= =====#
# -= AviSynth script by MovieStacker v2.0.0 (beta3) =- #
#================================================= =====#

#LoadPlugin("C:\Program Files\MovieStacker\Filters\MPEG2Dec.dll")
LoadPlugin("C:\Program Files\MovieStacker\Filters\Convolution3D.dll")
#LoadPlugin("C:\Program Files\MovieStacker\Filters\GripFit_preview.dll")
LoadPlugin("C:\Program Files\MovieStacker\Filters\STMedianFilter.dll")
LoadPlugin("C:\Program Files\MovieStacker\Filters\DustV5.dll")
LoadPlugin("C:\Program Files\MovieStacker\Filters\UnFilter.dll")
LoadPlugin("C:\Program Files\MovieStacker\Filters\LegalClip.dll")
#LoadPlugin("C:\Program Files\MovieStacker\Filters\DecombLegacy.dll")
AviSource("E:\MurderByDeath.avi")
ConvertToYUY2()
LegalClip()
unfilter(50,50)
#GripCrop( 352, 480 )
#GripSize(resizer="BicubicResize")
STMedianFilter(8, 32, 0, 0, 8, 32)
PixieDust()
mergechroma(blur(1.50))
mergeluma(blur(0.2))
Convolution3D(preset="movieLQ")
#GripBorders()
LegalClip()

Maybe you should play with the source_anamorphic parameter in GripCrop? Try source_anamorphic=true or source_anamorphic=false.

Firstly, have a look in Tmpgenc in the advanced tab and make sure that the "clip Frame" is not ticked.

Secondly I would look at the clip in Virtualdub just before the GripBorders() to see where the shift occurs and try to diagnose.

Thirdly if there is still a problem I would use the parameters fiven by Moviestacker without Gripfit. You will need to pre-determine your cropping values however.

ozjeff99