: Refers to the audio codec used, which is common for 5.1 surround sound but can also be found in lower-quality file containers.
: Indicates the video was likely encoded from a high-definition digital source, such as a streaming service or a VOD (Video on Demand) release. Watch BLADE RUNNER 2049 (2017) HDRip AC3 avi (1)
: Though it occasionally leaves services like Netflix, it is often available on YouTube Movies or Hulu. : Refers to the audio codec used, which is common for 5
The naming convention provides several clues about the video quality and origin: Watch BLADE RUNNER 2049 (2017) HDRip AC3 avi (1)