invalid argument when trying to make a transparent mov

[jurassicjordan]

[Parsed_alphamerge_1 @ 0x559b72360280] This filter does not take any options, but options were provided: shortest=1.
[AVFilterGraph @ 0x559b722b2100] Error initializing filter 'alphamerge' with args 'shortest=1'
Error initializing complex filters.
Invalid argument
Process finished

[LeonadroW]

I also have this problem

[nadermx]

What version of ffmpeg are you all using?

[LeonadroW]

I use [ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers], well , I found the cmd code in utilities.py saying:{ 'ffmpeg', '-y', '-i', file_path, '-i', temp_file, '-filter_complex',
'[1][0]scale2ref[mask][main];[main][mask]alphamerge=shortest=1,fps=10,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse',
'-shortest', output
]}}
and my ffmpeg can't take arguments behind alphamerge, so change it into:
{
cmd = [
'ffmpeg', '-y', '-i', file_path, '-i', temp_file, '-filter_complex',
'[1][0]scale2ref[mask][main];[main][mask]alphamerge,fps=10,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse',
'-shortest', output]
}
and in this way it works

[nadermx]

For it to work with backgroundremover it has to be ffmpeg 4.4+, I have it listed on the requriements. You're method is interesting if it works with ffmpeg 4.2, maybe should do that if it works for 4.4+ too.. hrm