In-vision commentary

An in-vision commentary is a commentary in which the participants are filmed, and the resulting video is dropped within the video of the episode on which they're commenting. Such commentaries were a major feature of the series 2 boxset, but they were not extensively used thereafter.

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.