The video codec used to compress the file. XviD was a popular open-source codec in the mid-2000s to early 2010s for maintaining good quality while keeping file sizes small enough to fit on a CD-R.
When Lone Survivor was released in 2013, it was hailed for its visceral realism and unflinching portrayal of combat. For many viewers at the time, the "DFE1" release was their first encounter with the film. The XviD codec used in this specific AVI file was the gold standard for standard-definition video, striking a delicate balance between visual clarity and a file size that could fit on a standard CD-R or be easily shared over 2013-era internet speeds. Lone Survivor -2013- DVDRip XviD by DFE1 avi