an alternative to interlace in avisynth?

[marcorocchini]

Hi

however I'm a cat-

please be patient -

AssumeTFF().separatefields().selectevery(4,0,3).weave()

but seems it produce "crude" results of twitter when that video is converted to interlaced, almost as if instead of outputting in progressive and then interlacing with ffmpeg using -vf interlace seems a little more "smooth", less "crude".

So I wonder, is there an alternative or a plugin that interlace in avisynth reducing twittering?

[Sharc]

To reduce twitter you can lowpassfilter the source vertically before interlacing.

[marcorocchini]

so in avisynth how is the commanline?

[jagabo]

How many times do we have to repeat this? Apply a slight vertical blur to the video while it's progressive -- Blur(0.0, 0.5) or thereabouts. Limit it to only the most high contrast horizontal edges if you want to avoid blurring the entire frame.

[hello_hello]

Why not just delete every second frame with SelectEven() and add --fake-interlaced and --pic-struct to the x264 command line?

[marcorocchini]

this is my source:

https://www.swisstransfer.com/d/169af830-016e-4de1-bef4-ebf6b64075e9

is UHD 50P 3840x2160

my target is mxf HD 25i, so I try this .avs

Import("v:\automazioneclip\avisynth\plugins\IResize.avsi")
Import("V:\automazioneclip\AviSynth\plugins\smoothFPS2.avsi")
Import("v:\automazioneclip\AviSynth\plugins\FrostyBorders.avsi")
Import("v:\automazioneclip\AviSynth\plugins\CropResizedic2017.avsi")
Import("V:\automazioneclip\AviSynth\FrameRateConverter2021\FrameRateConverter.avsi")
Import("V:\automazioneclip\AviSynth\LinearTransformation-3.0\LinearTransformation.avsi")
LoadPlugin("v:\automazioneclip\AviSynth\AVSCube\x64\vscube.dll")
LoadPlugin("v:\automazioneclip\AviSynth\FrameRateConverter2021\X64\FrameRateConverter.dll")
Import("v:\automazioneclip\AviSynth\FFMS2_26022024\FFMS2.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\FFMS2_R1363_AGO2023\X64\ffms2.dll")  
LoadPlugin("v:\automazioneclip\AviSynth\LSMASH2026\x64\LSMASHSource.dll") 
LoadCPlugin("v:\automazioneclip\avisynth\plugins64\yadif.dll") 
LoadPlugin("v:\automazioneclip\AviSynth\YADIFMOD2_2023\x64\yadifmod2.dll")  
LoadPlugin("V:\automazioneclip\AviSynth\MaskTool2\X64\masktools2.dll")   
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\ResampleMT.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\nnedi3.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\aWarpsharpMT.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\eedi3.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\EEDI2.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\GScript_26_64.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\SangNom2.dll") 
Import("V:\automazioneclip\AviSynth\Santiag\santiag.avsi")
Import("V:\automazioneclip\AviSynth\QTGMC2025\QTGMC.avsi")
Import("V:\automazioneclip\AviSynth\QTGMC2025\Zs_RF_Shared.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\QTGMC2025\mvtools2.dll")
LoadPlugin("V:\automazioneclip\AviSynth\QTGMC2025\RgTools.dll") 
LoadPlugin("v:\automazioneclip\AviSynth\BestSource\2026\BestSource.dll")
LoadPlugin("V:\automazioneclip\AviSynth\RIFE\RIFE.dll")
LoadPlugin("V:\automazioneclip\AviSynth\RIFE\avsresize.dll")
LoadPlugin("V:\automazioneclip\AviSynth\RIFE\PlanarTools.dll")
LoadPlugin("V:\automazioneclip\AviSynth\HDRTools\x64\Release_W7_AVX2\HDRTools.dll")
Import("v:\automazioneclip\AviSynth\GradFun3plus\ExTools.avsi")
Import("V:\automazioneclip\AviSynth\GradFun3plus\ResizersPack.avsi")
Import("v:\automazioneclip\AviSynth\CropResize\CropResize 2025-06-16.avsi")
Import("v:\automazioneclip\AviSynth\CropResize\CropResize Resizer Functions 2025-06-16.avsi")
Import("v:\automazioneclip\AviSynth\CropResize\CropResize Wrapper Functions 2025-06-16.avsi")
LoadPlugin("v:\automazioneclip\AviSynth\neo_f3kdb\x64\neo-f3kdb.dll")
LoadPlugin("v:\automazioneclip\AviSynth\neo_f3kdb\x64\dither.dll")
LoadPlugin("v:\automazioneclip\AviSynth\neo_f3kdb\x64\avstp.dll")
Import("v:\automazioneclip\AviSynth\neo_f3kdb\x64\dither.avsi")
Import("v:\automazioneclip\AviSynth\neo_f3kdb\x64\mt_xxpand_multi.avsi")
Import("v:\automazioneclip\AviSynth\FrostyBorders 2025-04-14\FrostyBorders Avisynth\FrostyBorders 2025-04-14.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\FFT3Dfilter\x64\fft3dfilter.dll")
Import("V:\automazioneclip\AviSynth\GradFun3plus\GradFun3plusEX.avsi")
#Import("V:\automazioneclip\AviSynth\GradFun3plus\GradFun3plusMix.avsi")
Import("V:\automazioneclip\AviSynth\FramerateConverterMix\FrameRateConverterMIX.avsi")
Import("V:\automazioneclip\AviSynth\FramerateConverterMix\GradePack.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\FramerateConverterMix\ExBlend_x64.dll")

LWLibavVideoSource("C:\Users\Administrator\Desktop\Nuova cartella (23)\DJI_20260226150413_0004_D.MP4")

CropResize(1920)

#GradFun3Plus() # but too slow sorry :( #

QTGMC(InputType=1, EzDenoise=2.0, Preset="Super Fast", SubPel=4 )

AssumeFPS(50)

Prefetch(4)

and encoding using:

ffmpeg.exe -v quiet -stats -threads auto -y -i "C:\Users\Administrator\Desktop\Nuova cartella (23)\tempAVS1.avs" -vf scale=interl=1,interlace,setfield=tff,setsar=1/1,format=yuv422p -an -pix_fmt yuv422p -f rawvideo - | v:\automazioneclip\core\ffmbcX642017.exe -loglevel quiet -threads 12 -s 1920x1080 -r 25 -y -f rawvideo -pix_fmt yuv422p -i - -tff -target xdcamhd422 -an "out1_OK_1080i25.MXF"

ffmbcx642017.exe is here: https://www.swisstransfer.com/d/58b51710-3079-4fc0-aa5a-20d31f29a681

and I get this (seems to me correct) MXF output file: https://www.swisstransfer.com/d/acc861ca-fed4-4334-b91c-3b7250d9379f

I suppose is "correct" with no too aliasing/twittering because if I import the original mp4 in Edius, set as 25i interlaced project setting, and I try export the interlaced MXF, this is the final result: https://www.swisstransfer.com/d/ec651242-2c2a-4b93-83b1-f2274cfff575

that appears very similar to the avs/ffmbc transcoded (out1_OK_1080i25.MXF)

But now I try to execute the same using an .avs output already 25i:

Import("v:\automazioneclip\avisynth\plugins\IResize.avsi")
Import("V:\automazioneclip\AviSynth\plugins\smoothFPS2.avsi")
Import("v:\automazioneclip\AviSynth\plugins\FrostyBorders.avsi")
Import("v:\automazioneclip\AviSynth\plugins\CropResizedic2017.avsi")
Import("V:\automazioneclip\AviSynth\FrameRateConverter2021\FrameRateConverter.avsi")
Import("V:\automazioneclip\AviSynth\LinearTransformation-3.0\LinearTransformation.avsi")
LoadPlugin("v:\automazioneclip\AviSynth\AVSCube\x64\vscube.dll")
LoadPlugin("v:\automazioneclip\AviSynth\FrameRateConverter2021\X64\FrameRateConverter.dll")
Import("v:\automazioneclip\AviSynth\FFMS2_26022024\FFMS2.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\FFMS2_R1363_AGO2023\X64\ffms2.dll")  
LoadPlugin("v:\automazioneclip\AviSynth\LSMASH2026\x64\LSMASHSource.dll") 
LoadCPlugin("v:\automazioneclip\avisynth\plugins64\yadif.dll") 
LoadPlugin("v:\automazioneclip\AviSynth\YADIFMOD2_2023\x64\yadifmod2.dll")  
LoadPlugin("V:\automazioneclip\AviSynth\MaskTool2\X64\masktools2.dll")   
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\ResampleMT.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\nnedi3.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\aWarpsharpMT.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\eedi3.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\EEDI2.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\GScript_26_64.dll") 
LoadPlugin("V:\automazioneclip\AviSynth\Santiag\SangNom2.dll") 
Import("V:\automazioneclip\AviSynth\Santiag\santiag.avsi")
Import("V:\automazioneclip\AviSynth\QTGMC2025\QTGMC.avsi")
Import("V:\automazioneclip\AviSynth\QTGMC2025\Zs_RF_Shared.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\QTGMC2025\mvtools2.dll")
LoadPlugin("V:\automazioneclip\AviSynth\QTGMC2025\RgTools.dll") 
LoadPlugin("v:\automazioneclip\AviSynth\BestSource\2026\BestSource.dll")
LoadPlugin("V:\automazioneclip\AviSynth\RIFE\RIFE.dll")
LoadPlugin("V:\automazioneclip\AviSynth\RIFE\avsresize.dll")
LoadPlugin("V:\automazioneclip\AviSynth\RIFE\PlanarTools.dll")
LoadPlugin("V:\automazioneclip\AviSynth\HDRTools\x64\Release_W7_AVX2\HDRTools.dll")
Import("v:\automazioneclip\AviSynth\GradFun3plus\ExTools.avsi")
Import("V:\automazioneclip\AviSynth\GradFun3plus\ResizersPack.avsi")
Import("v:\automazioneclip\AviSynth\CropResize\CropResize 2025-06-16.avsi")
Import("v:\automazioneclip\AviSynth\CropResize\CropResize Resizer Functions 2025-06-16.avsi")
Import("v:\automazioneclip\AviSynth\CropResize\CropResize Wrapper Functions 2025-06-16.avsi")
LoadPlugin("v:\automazioneclip\AviSynth\neo_f3kdb\x64\neo-f3kdb.dll")
LoadPlugin("v:\automazioneclip\AviSynth\neo_f3kdb\x64\dither.dll")
LoadPlugin("v:\automazioneclip\AviSynth\neo_f3kdb\x64\avstp.dll")
Import("v:\automazioneclip\AviSynth\neo_f3kdb\x64\dither.avsi")
Import("v:\automazioneclip\AviSynth\neo_f3kdb\x64\mt_xxpand_multi.avsi")
Import("v:\automazioneclip\AviSynth\FrostyBorders 2025-04-14\FrostyBorders Avisynth\FrostyBorders 2025-04-14.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\FFT3Dfilter\x64\fft3dfilter.dll")
Import("V:\automazioneclip\AviSynth\GradFun3plus\GradFun3plusEX.avsi")
#Import("V:\automazioneclip\AviSynth\GradFun3plus\GradFun3plusMix.avsi")
Import("V:\automazioneclip\AviSynth\FramerateConverterMix\FrameRateConverterMIX.avsi")
Import("V:\automazioneclip\AviSynth\FramerateConverterMix\GradePack.avsi")
LoadPlugin("V:\automazioneclip\AviSynth\FramerateConverterMix\ExBlend_x64.dll")

LWLibavVideoSource("C:\Users\Administrator\Desktop\Nuova cartella (23)\DJI_20260226150413_0004_D.MP4")

CropResize(1920)

#GradFun3Plus() # but too slow sorry :( #

QTGMC(InputType=1, EzDenoise=2.0, Preset="Super Fast", SubPel=4 )

AssumeTFF().SeparateFields().SelectEvery(4, 0, 3).Weave()

#AssumeFPS(50)

Prefetch(4)

and encoding, excluding the -vf interlace from the commandline:

ffmpeg.exe -v quiet -stats -threads auto -y -i "C:\Users\Administrator\Desktop\Nuova cartella (23)\tempAVS1.avs" -vf scale=interl=1,setfield=tff,setsar=1/1,format=yuv422p -an -pix_fmt yuv422p -f rawvideo - | v:\automazioneclip\core\ffmbcX642017.exe -loglevel quiet -threads 12 -s 1920x1080 -r 25 -y -f rawvideo -pix_fmt yuv422p -i - -tff -target xdcamhd422 -an "out2_wrong_1080i25.MXF"

and this is the "bad" result (with a lot amount of twittering):

https://www.swisstransfer.com/d/d6217dfd-bf58-4069-a546-cdde5097be8d

-------------------------------------------------------------------------------------

So my question is: is there a way to interlace directly in the avs script but avoiding the twittering?

[jagabo]

You're Edius output is much blurrier than the AviSynth output. That's why the AviSynth output twitters so much more.

[marcorocchini]

[Attachment 91325 - Click to enlarge]

please help the lonely cat

[marcorocchini]

Why not just delete every second frame with SelectEven() and add --fake-interlaced and --pic-struct to the x264 command line?

for example I need to encode in virtualdub but need to "pass" the interlaced stream to Virtualdub: even if it have a "interlace" filter similar to avisynth that do the same twittering

[marcorocchini]

To reduce twitter you can lowpassfilter the source vertically before interlacing.

ok in the avisynth script how I can do?

[jagabo]

You were already told how.

[Sharc]

To reduce twitter you can lowpassfilter the source vertically before interlacing.

ok in the avisynth script how I can do?

You were already told how.

@cat with the memory of a flea: In addition to revisiting your earlier posts on that same subject maybe marcorocco over at doom9 can tell?
https://forum.doom9.org/showthread.php?p=2029064#post2029064