This is likely the "release group" or the individual uploader who encoded the file. Different groups have different reputations for quality.

This suggests the audio is in Hindi. "Line" means the audio was likely taken directly from an audio jack (like a hearing-impaired port in a theater) rather than being the official studio master.

This stands for High Definition Telecine . It indicates the source was a film print captured digitally. While better than a "CAM" (someone in a theater with a phone), it’s usually lower quality than a Blu-ray or official Digital Rip.