what is hdx
HDX is a new format that is released by Vudu, especially for its customers. HDX encodes titles in 1080p HD at 24 frames-per-second. This is sort of similar to the technology used in Blu-ray Disc. Vudu utilizes the H.264 (MPEG-4 Part 10) encoding process along with proprietary encoding techniques dubbed TruFilm.
Essentially, Vuduâs HD is optimal for HD displays, whereas HDX is optimized for HD display over the size of 40 inches. However, a disadvantage of HDX videos is that they are larger in size than HD videos, and hence would also take longer to download and stream.