This is the "release group" tag. Groups like RKETHD are responsible for sourcing, encoding, and uploading the content to various corners of the internet, ensuring the file meets specific quality standards. Why This Specific Format?
This denotes the resolution. 1080p (1920x1080 pixels) is considered Full High Definition (FHD), providing a crisp image suitable for large monitors and televisions. heal20171080pwebdldd51h264rkethd
This is the video compression standard (also known as AVC). It is the most common codec used today because it offers a great balance between high video quality and manageable file sizes. This is the "release group" tag