How do you open clpi?

To open a CLPI (Clip Information) file, you typically need specialized software that can handle Blu-ray Disc structures, such as a media player that supports Blu-ray playback or software like VLC Media Player with the appropriate plugins. Alternatively, you can use Blu-ray authoring tools or specific video conversion software that can read and interpret CLPI files. If you're looking to edit or extract content, programs like tsMuxeR or MakeMKV can also be useful.