Error when trying to generate input viewer

[Blounard]

I tried to record a TAS with auto tt recorder, latest version, but I got an error at the encoding phase.
The framedump phase worked correctly.
Recording the run without input viewer also works fine.

screenshot of the error : https://blounard.s-ul.eu/RaYRgd8o.png
DL link for the ghost : https://blounard.s-ul.eu/NYMmTF7e.rkg

The ghost is a TAS, made with dolphin 5.0 stable, using the TAS Code.
I have recorded in the past some TAS with the auto tt recorder with input viewer, without issues, I'm not sure why it didn't work this time.

You can ask me more information if you want on discord : blounard