Subtitles not working on ATV3

I have a number of foreign movies on my HDD.
Subtitles (mainly .srt) play just fine using VLC and Plex on my PC, and I can call them up on my iPhone Plex app. But ATV3 (current update), no go. If memory serves, it USED to work (although it was hit and miss) so why the change?
(tbh, after looking thru a bunch of stuff online, I realise how little jargon I know… transcoding, embedding, forced vs automatic vs whatever else), tx3g, etc., etc., so please forgive me if I’m not using the right words or giving enough info.)
An aside: how do I get Plex to play the English subs of foreign language spoken parts of an English-speaking film? eg. Bottle Shock

@mattyb12001 said:
I have a number of foreign movies on my HDD.
Subtitles (mainly .srt) play just fine using VLC and Plex on my PC, and I can call them up on my iPhone Plex app. But ATV3 (current update), no go. If memory serves, it USED to work (although it was hit and miss) so why the change?
(tbh, after looking thru a bunch of stuff online, I realise how little jargon I know… transcoding, embedding, forced vs automatic vs whatever else), tx3g, etc., etc., so please forgive me if I’m not using the right words or giving enough info.)
An aside: how do I get Plex to play the English subs of foreign language spoken parts of an English-speaking film? eg. Bottle Shock

This forum is solely for the official Plex client, which only works on the ATV4. You’re looking for the the PlexConnect forum, which came be found here: https://forums.plex.tv/categories/appletv-plexconnect

@mattyb12001 said:
An aside: how do I get Plex to play the English subs of foreign language spoken parts of an English-speaking film? eg. Bottle Shock

For what its worth, I’ve been having trouble with this on the new Apple TV. Really frustrating when you are an hour into a movie and all the sudden there is a foreign language but no text. The files don’t have a problem in other apps.

@mattyb12001 did you find a solution? I have the same problem…

I found this: https://support.plex.tv/hc/en-us/articles/200471133-Adding-local-Subtitles-to-your-media
but, it did not work…

Any ideas?

I found a solution.
In the Settings of the Plex app in the Apple TV, there is a setting regarding the subtitles.

It was set to “Auto”. I changed it to the other options and it worked!
But you have to do it at the Apple TV Settings menu, not at the Plex web interface from your computer.

I’ve moved this to the PlexConnect forum.