This refers to the resolution (1280 x 720 pixels). It is considered Standard High Definition.
Be cautious when searching for specific file strings like this on the open web. Many sites promising "better" versions or direct downloads of specific scene releases are often fronts for malware or intrusive advertising. It is always safer to view content through or licensed digital retailers. confessionsofasinfulnun2017720p10bitweb better
This indicates the source of the video was a streaming service (like Netflix, Amazon, or Hulu) rather than a physical Blu-ray disc. Why "10-bit" is Considered Better This refers to the resolution (1280 x 720 pixels)