PGS (Presentation Graphic Stream). These are image-based subtitles native to Blu-ray discs. Included Tracks:
Based on the standard release for this REMUX version, the following subtitle attributes are typically included: subtitle Eternals.2021.1080p.BluRay.REMUX.AVC.D...
AVC (Advanced Video Coding / H.264), providing the original 1:1 bitstream from the retail disc. PGS (Presentation Graphic Stream)
Due to the lossless nature of REMUX files, this file likely ranges between 25GB and 40GB . subtitle Eternals.2021.1080p.BluRay.REMUX.AVC.D...