Document:Q10696
From Rhizome Artbase
delter is software which exposes the structure of the MPEG inter-frame compression scheme. This compression scheme enables the efficient transport of digital motion imagery and is responsible for the characteristic 'blocky' visual artifacts in these movies.
The software works in the interstitial space between the frames of an MPEG movie by extracting and rendering only the inter-frame motion vectors. In the resulting playback, the objects in the movie are effaced, and only the ghostly traces of movement remain.