Observe what changes when captions are toggled
Choose a short dialogue passage and open the app's caption control where available. Compare the picture with the option on and off. Keep the episode and playback position the same so the result is easy to interpret.
If the original translation stays visible in both states, it may be part of the video. If a second layer appears, the added layer can be a selectable caption track. Record what changes rather than assuming every line on screen came from the same setting.
Apply settings only to selectable tracks
MHz's help gives different controls for browser and mobile viewing on eligible programmes. Follow those instructions when a configurable English caption track is offered. Use the relevant device's controls rather than copying a menu path from another platform.
For text already embedded in the picture, a television's system caption font cannot alter its size, colour or position. Adjust the physical viewing arrangement if readability is the issue: a larger screen or closer seating may help, while cropping the picture can remove useful parts of the film.
Choose another programme or format when necessary
If a viewer needs a particular text presentation, inspect another eligible series with a selectable track before starting a long session. This is a catalogue choice as well as a device setting. The service's general use of English subtitles does not establish a uniform technical format.
When choosing for someone else, ask whether the existing text is comfortable to read. A subtitle option that exists technically can still be unsuitable for that person's needs. Plan around the usable version rather than expecting a hidden setting to rebuild embedded text.
Report an actual discrepancy precisely
If the provider documents a selectable track for a programme but the expected control is absent, send the series, episode, device and app version to support. State whether the text remained visible after Off was selected. That is much clearer than reporting that subtitles never work.
Do not erase the app merely because embedded text stays on screen; that can be expected. Keep the comparison and seek clarification about the particular programme's format. A reinstall does not remove words that form part of the video image.
Questions about this guide
Can TV caption settings restyle burnt-in text?
No. The words are part of the picture.
Are all MHz programmes technically identical?
No. MHz documents selectable captions on some series alongside predominantly burnt-in subtitles.