In-vision commentary

An in-vision commentary was a commentary in which the participants were filmed, and the resulting video was dropped within the video of the episode on which they were commenting. This then allowed the viewer to divine extra meaning by reading the facial expressions of the participants as they commented, and overcame the occasional problem encountered on audio commentaries of participants making visual references. Such commentaries were a major feature of the series 2 boxset, but they were not extensively used thereafter until the series 5 boxset.

However, a form of "video commentary" was later used on the official Doctor Who website, as a part of the Adventure Calendar series. These commentaries differed from the ones on the DVD boxset, in that they were simply recordings of the commentary participants; no footage from the actual episodes was included. Indeed, most of these "in-vision commentaries" were later repurposed as simple audio commentaries either in the podcast series of commentaries used in the RTD era, or on the DVD boxsets. Nevertheless, they were labeled "in vision commentary" on their respective title cards.