vapoursynth.Error: StackHorizontal

# Imports

import vapoursynth as vs

# getting Vapoursynth core

import sys

import os

core = vs.core

# Import scripts folder

scriptPath = 'D:/!_System/Hybrid/64bit/vsscripts'

sys.path.insert(0, os.path.abspath(scriptPath))

# loading plugins

core.std.LoadPlugin(path="D:/!_System/Hybrid/64bit/vsfilters/Support/fmtconv.dll")

core.std.LoadPlugin(path="D:/!_System/Hybrid/64bit/vsfilters/SourceFilter/AviSource/avisource.dll")

# Import scripts

import validate

# Source: 'L:\!_convert\1\2007.avi'

# Current color space: YUV420P8, bit depth: 8, resolution: 720x480, frame rate: 30fps, scanorder: progressive, yuv luminance scale: limited, matrix: 470bg

# Loading L:\!_convert\1\2007.avi using VsAviSource

clip = core.avisource.AVISource(path="L:/!_convert/1/2007.avi")

frame = clip.get_frame(0)

# setting color matrix to 470bg.

clip = core.std.SetFrameProps(clip, _Matrix=vs.MATRIX_BT470_BG)

# setting color transfer (vs.TRANSFER_BT601), if it is not set.

if validate.transferIsInvalid(clip):

  clip = core.std.SetFrameProps(clip=clip, _Transfer=vs.TRANSFER_BT601)

# setting color primaries info (to vs.PRIMARIES_BT470_BG), if it is not set.

if validate.primariesIsInvalid(clip):

  clip = core.std.SetFrameProps(clip=clip, _Primaries=vs.PRIMARIES_BT470_BG)

# setting color range to TV (limited) range.

clip = core.std.SetFrameProps(clip=clip, _ColorRange=vs.RANGE_LIMITED)

# making sure frame rate is set to 30fps

clip = core.std.AssumeFPS(clip=clip, fpsnum=30, fpsden=1)

# making sure the detected scan type is set (detected: progressive)

clip = core.std.SetFrameProps(clip=clip, _FieldBased=vs.FIELD_PROGRESSIVE) # progressive

original = clip

from vsrealesrgan import realesrgan as RealESRGAN

# adjusting color space from YUV420P8 to RGBS for vsRealESRGAN

clip = core.resize.Bicubic(clip=clip, format=vs.RGBS, matrix_in_s="470bg", range_s="limited")

# resizing using RealESRGAN

clip = RealESRGAN(clip=clip, model=5, device_index=0) # 2880x1920

# resizing 2880x1920 to 820x548

# adjusting resizing

clip = core.fmtc.resample(clip=clip, w=820, h=548, kernel="spline64", interlaced=False, interlacedd=False)

original = core.resize.Bicubic(clip=original, width=820, height=548)

# adjusting output color from: RGBS to YUV420P8 for FFV1Model

clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8, matrix_s="470bg", range_s="limited", dither_type="error_diffusion")

original = core.text.Text(clip=original,text="Original",scale=1,alignment=7)

clip = core.text.Text(clip=clip,text="Filtered",scale=1,alignment=7)

stacked = core.std.StackHorizontal([original,clip])

# set output frame rate to 30fps (progressive)

stacked = core.std.AssumeFPS(clip=stacked, fpsnum=30, fpsden=1)

# output

stacked.set_output()