Refers to a type of audio encoding. DDP stands for Dolby Digital Plus, and 5.1 indicates that the audio is in 5.1 surround sound, which includes five full range channels (left, center, right, left rear, right rear) and one low-frequency effects channel.
For those unfamiliar with the technical tags, here is what this specific file version offers: Ram.Setu.2022.1080p.AMZN.WEB-DL.MULTI.DDP5.1.H....
The filename seems to be truncated. The "H" could stand for "HDR" (High Dynamic Range), which would indicate that the video also offers an enhanced visual experience with greater detail in shadows and highlights. Refers to a type of audio encoding
: Sourced from Amazon Prime Video; "WEB-DL" means it was losslessly downloaded from a streaming service. The "H" could stand for "HDR" (High Dynamic
: Stands for "web download," which means the file was downloaded directly from the web, as opposed to being ripped from a physical source like a DVD or Blu-ray.