Record where the subtitles disappear
Start with the exact performance and whether it is a live broadcast or a replay. Note whether the selected subtitles appear on the source screen before using AirPlay and whether they remain visible on the television. These are different observations from the whole video failing to cast.
For an illustrative replay session, a viewer may see English subtitles on an iPad but lose them on the receiving television. The documented route limitation should be checked before changing the preferred language of the entire television. A device-wide language change cannot establish that the web-to-AirPlay route transports the selected subtitle track.
Choose a supported viewing route for the requirement
The publisher describes dedicated Paris Opera Play television applications for AppleTV and AndroidTV alongside other receiving methods. Check its current instructions for the intended platform and account access. A similarly named mobile app should not be assumed to exist: the FAQ explicitly describes POP on mobile as a website.
Before arranging a shared viewing session, open the same performance on the chosen route and inspect the actual subtitle choices. Keep the programme address and language with the viewing note. If the option is absent, choose a route that meets the need rather than plan an opera evening around a picture-only check.
Keep the live exception distinct from the replay
The FAQ’s live exception concerns subtitles embedded in the video image. That is different from a selectable subtitle track on a replay. Do not assume that a route which displayed words during a live event must transport a later replay’s separate subtitle option in the same way.
If the documented route still behaves unexpectedly, retain the performance, live-or-replay status, source device, browser, receiving device and selected language for support. A concrete comparison is more useful than saying all subtitles are broken. Check the current publisher guidance again if platform behaviour changes, rather than extend this product-specific limitation to every AirPlay service.
Questions about this guide
Does a successful live AirPlay session prove replay subtitles will work?
No. The publisher distinguishes embedded live subtitles from selectable replay subtitles.