Sometimes it's easier to just redownload in a format that's more usabe than trying to make do with what you got. Obviously there's a bunch of reasons why redownloading could not be a valid option.
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If there's only one intro per season, selecting a member at random from a set of one means it picks that member.
You could also add the intro to the videos. It should be trivial with ffmpeg or any other video editor.
I'd really like the opposite, autoskip all intros, or a script to rebuild the file without intros.
Okay, that's a pretty cool request. But how much space does it actually save to do it like this?
It‘s One Piece, which currently has over 1.000 episodes, so I‘d assume it‘s worth the extra file hassle
Look up ordered chapters
You could try the trailers sub folder?