Likely indicates Polish (Polski) subtitles or audio dubbing is included.
The specific string in your query is a release "scene tag" used in digital distribution. Here is what the technical terms mean: The year the series was released. S01E04: Season 1, Episode 4. Breathe.2018.S01E04.PL.720p.AMZN.WEB-DLx264.DDP...
In this episode, the tension escalates as (played by R. Madhavan) continues his desperate and dark journey to save his son, Josh, who needs an organ transplant. Likely indicates Polish (Polski) subtitles or audio dubbing
Kabir Sawant (played by Amit Sadh), the brilliant but troubled cop, begins to find subtle patterns in the "accidental" deaths. His intuition starts leading him closer to the truth, even as his superiors remain skeptical. S01E04: Season 1, Episode 4
A "Web Download" – a lossless rip from a streaming service. x264: The video compression codec used (H.264). DDP: Dolby Digital Plus audio format.