Alexander -2004- 720p Br-rip -x264 - Ac3 (2024)

One such artifact is the file labeled:

Many scene rips of the time used MP3 audio to save an extra 100MB. AC3 (usually 5.1 channels at 448kbps or 640kbps) is larger. By including AC3, the creator of this file assumed the user had a surround sound system. Alexander -2004- 720p Br-Rip -X264 - Ac3

When Blu-ray launched, it used MPEG-2 (inefficient) or early H.264 (slow). The scene groups (like aXXo, Eureka, or the unnamed group behind this rip) adopted x264 because it could maintain 80% of the visual quality of the source while reducing the file size by 70%. One such artifact is the file labeled: Many