Overscan enlarges an incoming picture slightly and crops its outer edges. If menus, captions or scoreboards are clipped, look for the television’s picture-size or screen-fit setting. A correctly sized source can still be cropped by local display processing.
Compare the programme with the interface
Open the streaming box’s menu or another application. If icons near the edges are also missing, the television’s input sizing is a strong suspect. If only one programme is affected while the interface fits, the crop may already be in the source or in that player’s individual zoom setting.
Find a one-to-one or fit option
Manufacturers use different names for showing the full incoming image. Consult the exact model’s manual and inspect the active HDMI input or built-in app. A setting can be remembered separately for different resolutions, so check the problematic viewing path rather than assuming another input’s size mode applies everywhere.
Keep the original shape
Use a full-image option without stretching faces or turning circles into ovals. If a tiny noisy border becomes visible on an older source, decide whether a small crop is worth losing other edge information. Do not enlarge every programme merely to hide black bars; those may be part of the intended aspect ratio.