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Are there any add-on like "YouTube™ Dual Subtitles", but locally translate subtitle? (lemmy.world)

submitted 5 days ago by [email protected] to c/[email protected]

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I'm in the middle of learning a new language and trying to expose myself to the language. And this add-on (https://addons.mozilla.org/en-GB/firefox/addon/youtube-dual-subtitles/), I found this very helpful. But because it had access to YouTube, it will automatically download the subtitle (or the auto-generated one) and translate it. What worries me is where and how it got translated and what it's doing with my activity. Also, sometimes it just doesn't work at all.

So are there any add-ons similar to this? That you can customize it how it translates stuff, e.g. via local LLM or via translation service of your choosing. Other suggestions to achieve the same goal are welcomed!

~~I hope Firefox has more capabilities like Auto Translate Live Caption~~

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[–] [email protected] 4 points 5 days ago* (last edited 4 days ago) (2 children)

So, this is a more involved approach and it's not a Firefox add-on but I thought I'd mention it:

https://fnordig.de/til/Machine-Translation/bergamot-subtitles.html

You'd play the YT videos outside the browser using mpv in combination with yt-dlp and an mpv lua script would do the translation locally using the Bergamot engine (which happens to be Mozilla's translation engine). Could be adapted to use other engines too.

[–] Zotora 1 points 4 days ago

You could also locally run it through Whisper from Open AI to create subs and then embed them using ffmpeg.

I do this for vids in languages i dont speak.

[–] [email protected] 1 points 4 days ago

thanks for the suggestion!