By 2012 (when Shameless Season 2 aired), XviD was becoming an "old-school" format. While high-definition (H.264) was becoming the standard, scene groups like DEMAND continued to release XviD versions to ensure compatibility with older hardware, like standalone DVD players with USB ports.
To help you find exactly what you're looking for, are you interested in: Watch Shameless US S02E11 BDRip XviD-DEMAND
The title refers to Thanksgiving, and the "feature" of the episode is the subversion of traditional holiday tropes, replacing a peaceful meal with one of the most chaotic family breakdowns in the show's history. By 2012 (when Shameless Season 2 aired), XviD
This episode features one of the most infamous scenes in the series—the DIY surgery performed by the Gallagher family to help Monica, which highlights the show's "dark comedy" peak. Watch Shameless US S02E11 BDRip XviD-DEMAND