-dolbydig... __top__: Avatar -2009- 3d-hsbs-1080p-h264-ac 3

If you need a (e.g., for a notes file, forum post, or listing), here’s a short example:

: The audio format. AC3 is a 5.1 surround sound technology developed by Dolby Laboratories

This looks like a classic high-quality file name from the early 3D home cinema era. Here are a few ways to "finish" or adapt that string depending on what you're looking for: 1. The Completed Technical Filename

The filename says “AC-3” and “DolbyDig...” – that means the audio has been extracted and possibly downmixed or re-encoded to standard Dolby Digital.