I have a possible suggestion to make in terms of line re-dubbing. There are voice cloning programs out there (that I’ve been very unsuccessful and downloading due to software requirements) that might do the trick, despite the voice cloning results may sound more robotic and not as natural in the tone of voice.
OK wow I feel stupid. I’ve been waiting for Adobe to release their version of this type of software and didn’t think there are other possibilities out there.
I just came across lyrebird.ai. I don’t think it’ll work for fan editing purposes seeing as how it requires you to record your own voice saying specific phrases they’ve constructed.
There’s Real-Time-Voice-Cloning that apparently one could download from github.com. Seems a bit complicated…buuut potentially it could work at least for certain scenes?