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I have another problem, which is that my wife is Japanese and I’m American, and if we watch a French movie then I want the English subs and she wants the Japanese subs. Making that work with streaming services is very painful.

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Anecdotally, for a long time dual French and German subtitles was the standard in Swiss cinemas when movie was shown in original language. So your usecase is not that unusual !

Same in Belgium, top line was Dutch, bottom line was French

I had never thought of this before. What is the solution? Can any video software show two subtitles at once?

I developed a tool (https://github.com/smacke/ffsubsync) which can sync subtitles against each other (or even against an audio track), and this can be used in conjunction with other tools such as https://pypi.org/project/srt/ to combine multiple subtitle streams into a single stream. I've used this strategy to good effect to get both English and Chinese subtitles up at once.

VLC, mpv, and SMPlayer all support dual subtitles, with varying amounts of fiddling.

https://old.reddit.com/r/VLC/comments/hnle2o/dual_subtitles/

https://superuser.com/questions/1255487/how-to-get-vlc-to-di...

For Netflix and YouTube I actually use a language learning chrome extension called Migaku, that has this feature - but if there don’t exist subs, can also sometimes pull it off with a chrome extension for dual subs - forget what it is called but I can download SRT files and load them up alongside a stream. Both are not reliable and require significant fiddling.

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