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arcusmaximus / YTSubConverter

A tool for creating styled YouTube subtitles
MIT License
767 stars 55 forks source link

Questions regarding the generated subtitles #73

Closed 00Creamy closed 2 years ago

00Creamy commented 2 years ago

This is not an issue but rather a question Why does the generated subtitles doubles and put some zero width spaces on the start and the end?

00Creamy commented 2 years ago

After looking a bit more, do the reason subs line generated twice is to remove the problem where android opacity is not working? Even so how does it actually works?

arcusmaximus commented 2 years ago

Subtitle duplication happens when your .ass style has both a shadow and an outline. YouTube subtitles can't have both at the same time, so YTSubConverter creates one with a shadow and one with an outline and makes them overlap.

Another reason it can happen is when you have dark text. This is explained in the readme.

Zero-width spaces are used for working around all kinds of YouTube bugs. I wish they weren't necessary, but they are - without them, even simple stuff like making one word in a sentence bold would not be possible, because YouTube's subtitle code is just that buggy.