A television’s input banner normally describes the signal arriving over HDMI, not necessarily the original programme. A streaming box can upscale an HD channel and send a 4K output, so the banner alone cannot establish the source resolution.
Read two different measurements
The player’s stream information may show the encoded video size, while the television reports the negotiated HDMI mode. For example, a 1920 × 1080 stream can be rendered inside a 3840 × 2160 output. Both displays can be correct because they are measuring different stages of the viewing chain.
Use the programme as evidence
Open playback information while video is running rather than reading the app’s channel name. Note dimensions, frame rate and codec if those fields are available. Names such as UHD or FHD can be helpful catalogue labels, but they are not a substitute for the actual stream information.
Avoid an unnecessary settings loop
If the picture looks natural and motion is smooth, leave a compatible output selected. Switching repeatedly between 1080 p and 4K cannot restore detail missing from the source. When reporting a fault, include both the stream dimensions and output mode so support can distinguish decoding, scaling and connection problems. That distinction also helps avoid unnecessary changes to a working setup.
