The "HDH 1080p" designation specifically highlights the film's visual fidelity. At its release, Transformers was a benchmark for what high-definition home media could achieve.
: In a 1080p release, the audio is often just as critical as the video. The film features high-fidelity Dolby Digital and DTS sound mixes, which were nominated for Best Sound Editing and Mixing at the 80th Academy Awards. Legacy and Modern Reception Transformers_2007_HDH_1080p
For parents, it is worth noting that while it is an action film, it is rated for intense sequences of sci-fi violence and some brief sexual humor. Transformers_2007_HDH_1080p