Now you can customize and train a new synchronizer using your own subtitles and audiovisual content: https://github.com/baxtree/subaligner
That makes me wonder how much of the work is being done by aeneas vs. your own model. If parts of the audio are in a low voice or noisy (which tends to cause aeneas to slip) will subaligner be able to fix that?
What I know is Aeneas is using DWT which does not guarantee triangle inequality and for low voice or noise, DNN can handle those better with good enough model capacity.