: This is the audio format (Dolby Digital), providing multi-channel sound.
: This refers to the video compression standard used. x264 is a free library for encoding video streams into the H.264/MPEG-4 AVC format, widely praised for its efficiency in maintaining detail.
The prefix identifies the origin of this file as a Portuguese "warez" or file-sharing site. Historically, sites like Tugashare were hubs for European cinephiles to access international films with localized subtitles (Portuguese) that might otherwise be difficult to find in physical retail markets.
: This indicates the source was a Blu-ray disc, downscaled to a resolution of 1280x720 pixels. This provides a balance between high visual fidelity and a manageable file size.