Blu-ray subtitles format/PGS/.sup subtitles/Play and convert PGS subtitles

What is .SUP file format?
The .sup file extension stands for subtitle bitmap image extracted from a Blu-ray movie; it contains subtitle text graphics that are displayed during movie playback. The .sup subtitles are encoded with PGS codec, and sometimes known as PGS subtitles. It can be used for adding DVD subtitles to movies with authoring programs such as IfoEdit.

Convert a .sup subtitle to .srt, .ssa, .sub etc
SUP files can be converted to plain text using Optical Character Recognition programs such as SupRip. (Guide- convert .sup to .srt)

Which players support .sup subtitles?
Blu-ray Players and some HD Media Players (e.g. WD TV Live Hub, Netgear NeoTV 550 Ultimate HD Media Player)

How to extract .sup subtitles from a Blu-ray Disc?
Rip Blu-ray to BDMV /MKV/ISO and use tsMuxer to demux the Blu-ray structure (Guide- extract .sup subtitles from .m2ts).

How to convert .sup subtitles when ripping a Blu-ray Disc?
ByteCopy is a by far the exclusive Blu-ray ripper that converts .sup subtitles to .sub when ripping Blu-ray to MKV.