The tag "better" is a layman's explanation often added by well-meaning file-sharers on P2P networks like Kazaa or eDonkey. A user might have downloaded "Sinful Temptations 2001 DVDRip XviD," found it to be a "cam" recording (a low-quality recording made in a theater with a camera), and then found a higher quality version. They would rename the file to signal to other downloaders that this was the superior version. Gods And Kings 2014 Dual Audio 720p Bluray Link | Exodus
XviD (which is "DivX" spelled backward) was an open-source video compression format. In 2001, hard drive space was expensive, and internet bandwidth was slow (mostly dial-up or early DSL). A raw DVD file could be 4 to 8 gigabytes—impossibly large for most users to download. Google Files For Android 444 Page
The most cryptic part of the string—"_14 better" or "XviD14"—offers a fascinating glimpse into the quality control of the piracy underground.
XviD was the solution. It allowed "rippers" to compress a DVD movie down to roughly 700 megabytes. Why 700MB? Because that was the storage capacity of a standard CD-R. This compression allowed users to download a movie in a few days (or overnight on a good connection) and burn it to a physical disc. The XviD codec became the gold standard for "Scene" release groups, offering a balance between file size and visual quality that defined the era.
In this specific context, "better" acts as a consumer review embedded directly into the filename, a primitive form of the "likes" and "upvotes" we see on social media today.