Disney’s VP9 switcheroo story has caused quite a stir, and rightly so. The company’s departure from HEVC for 4K UHD streaming in Europe was significant not only through a patent litigation lens, after being issued an injunction for infringing InterDigital’s patented video encoding techniques, but also from a technical undertaking, too. With Disney itself remaining tight-lipped about the workings of its HEVC > VP9 changeover, this has prompted others to speculate, test, and probe. One interesting and slightly left-field angle to cross Faultline’s radar comes from Greening of Streaming (GoS), the non-profit group vying to reduce the video industry’s collective carbon footprint through improved measurement and reporting. Spurred on by Disney’s codec fuss, GoS measured the energy side of the…