Distinguish bitrate from resolution
The help explains that enhanced bitrate provides more information per pixel. That changes the delivered representation at 1080p; it does not mean the video has become a higher-resolution source. Keep the resolution label and the enhanced-bitrate label separate when comparing choices.
For a personal comparison, use the same title and a repeatable passage. Do not compare different uploads and attribute every visual difference to Premium. Differences in the source material can dominate the result, and the service does not promise that a label makes every scene look equally improved.
Check the source-content restrictions
YouTube says the option is only eligible for videos uploaded in 1080p. It excludes live streams, Shorts and uploads at higher or lower resolutions. A 4K upload watched at a 1080p playback setting therefore should not be assumed to qualify for this particular option.
This distinction is useful when one video has the label and another does not. Note the content type and available resolutions before changing receiver hardware. An absent enhanced-bitrate choice on an excluded source is not a reliable test of a malfunctioning membership or an insufficiently powerful television.
Evaluate automatic quality separately
YouTube also adapts stream quality to viewing conditions and says a Premium account may automatically receive 1080p Premium. Inspect the quality menu on the actual video if you need to know which option is being used. Do not infer it solely from the membership badge.
For a support request, include the video, whether it is live or short-form, the source-resolution choices and the receiving app. That evidence separates eligibility from adaptive delivery. It also prevents the higher-bitrate feature from being presented as a guarantee of 4K, a universal quality upgrade or an explanation for every buffering event.
Questions about this guide
Should a 4K upload offer 1080p Premium when played at 1080p?
The help excludes uploads at resolutions higher or lower than 1080p from this particular feature.
Does enhanced bitrate mean higher resolution?
No. YouTube describes it as more information per pixel within the 1080p representation.