Honestly it might be a tall order but I think it would be best to redo the subtitles from scratch.

The DVD subtitles don’t line up with what is being said numerous times throughout the movie. For example in the air conditioner scene when Kirby says “Oh yeah? Did you talk to him recently or something?” the subtitles just say “Did you talk to him?”. I’m guessing they’re like this because the subtitles may have been a based off the films script instead of going off what the characters are saying in the final version of the film or it might have just been a half-assed subtitle implementation for the DVD release but regardless of the reason it doesn’t line up.

The timing of the subtitles has some issues too. There’s that one with Kirby jumping down the waterfall but there’s also an issue during the City of Lights song where both times they sing “The city of light” at the end of the chorus the subtitles are noticeably late.

Also the look of the DVD subtitles isn’t ideal compared to customizable text subtitles. I’m not familiar with the process on implementing subtitles so I apologize if any I said sounds ignorant but I feel this should be considered for the public release of the project.