Custom subtitles are not supporting in Roku TV on my iPhone

The subtitles on Roku are the default and not the custom one I set in the settings. The iPhone honors the custom subtitles and the Roku should also.





[Re-Titled by Moderator]

Original Title: why aren't custom subtitles supported on ro

3810X, ATVE 15

Posted on Aug 16, 2025 2:05 AM

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Question marked as Top-ranking reply

Posted on Aug 16, 2025 5:49 AM

On an iPhone, subtitle and caption features depend on the specific app or streaming service you’re using. Apple’s Live Captions is a built-in accessibility feature, but it does not apply universally across all video streaming apps or when content is cast to external devices like Roku TV. Custom subtitle support is usually controlled by the streaming app itself, and some apps may not support importing or displaying user-added subtitle files. To use custom subtitles, check whether the app you’re streaming from has a subtitle option, or try playing the video directly on the iPhone with a compatible media player that allows custom subtitle files.

6 replies
Question marked as Top-ranking reply

Aug 16, 2025 5:49 AM in response to Voyager62

On an iPhone, subtitle and caption features depend on the specific app or streaming service you’re using. Apple’s Live Captions is a built-in accessibility feature, but it does not apply universally across all video streaming apps or when content is cast to external devices like Roku TV. Custom subtitle support is usually controlled by the streaming app itself, and some apps may not support importing or displaying user-added subtitle files. To use custom subtitles, check whether the app you’re streaming from has a subtitle option, or try playing the video directly on the iPhone with a compatible media player that allows custom subtitle files.

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Custom subtitles are not supporting in Roku TV on my iPhone

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