A typical workflow involves:

The specific filename you provided describes the quality and format of the video content: of the series. Full High Definition (1920 x 1080 pixels) resolution. Stands for High Efficiency Video Coding

While high-quality downloads may be available on various platforms, the best way to support the creators and ensure you have access to both seasons in the highest possible quality is through official channels:

For Elias, a data-archivist living on the fringes of the Neo-Kolkata sprawl, finding this specific string of characters had become an obsession. He had heard whispers in encrypted chatrooms about Nikosh Chhaya