OK. So my son tested the following two known-to-be-AI-and-said-to-be-Eleven videos and the site test said the likelihood that it was done by them was the following percentages.
2%: https://invidious.jing.rocks/watch?v=em0dX_G5IHA
58%: https://invidious.jing.rocks/watch?v=UWe68HcS99c
So the site is screwed up.
Wonder who told them to screw up their testing and why...
Since you’ve got the technique figured out as to how to do this, could you run the test on the same videos my son did, to verify his results? He asked whether I wanted him to upload the videos so others could test but I thought it would be better if somebody else did it from scratch so there’s no question about whether anything was done to alter the files.