Passing complex arguments to ffmpeg crashes ffmp

[CodeF0x]

I am trying to add a watermark to some files with the following command:

dotnet .\FFMP.dll -d 'C:\Users\Tobi\Videos\Delta Force\' --output-pattern "{{name}}_watermark.mp4" --convert -- -i watermark.png -filter_complex "[1]format=rgba,lut=a=val*0.3[watermark];[0][watermark]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -c:a copy

This produces the error

Starting application...
Error: The 'codec' argument is required.
Error: The 'output-pattern' argument is required.
Error: Specified input directory 'C:\Users\Tobi\Videos\Delta Force" --output-pattern {{name}}_watermark.mp4 --convert -- -i watermark.png -filter_complex [1]format=rgba,lut=a=val*0.3[watermark];[0][watermark]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2 -c: a copy' does not exist.

--output-pattern is provided and from my understanding, --convert should replace --codec

[CodeF0x]

As it turns out, something else caused the problem. I've opened #22