The text may be open captions that are already part of the video picture. Closed captions are a separate selectable presentation, while open captions cannot normally be disabled by the viewer. Programme graphics, translations and signs inside the scene can also look like captions.
Check the player’s control
Turn the selectable subtitle track off and replay the same moment. If text remains in exactly the same place, it may be burned into the image. An additional track can produce two overlapping sets of text, so distinguish the player’s captions from text that belongs to the source picture.
Understand the practical trade-off
Open captions remain visible in players that lack separate caption support, but viewers cannot usually change their size, contrast or language. Closed captions offer more control when the player implements it well. Neither label alone establishes accuracy, completeness or readable timing; those qualities depend on how the captions were prepared.
Avoid destructive attempts
Zooming or cropping to hide burned-in text can remove faces, titles and other important picture information. It also does not recover the image underneath the text. If the source offers a clean version or another language presentation, select it through the authorised service rather than treating local cropping as a proper replacement.