"Audio description is an audio track that narrates the relevant visual information in media. Audio description assumes that the viewer cannot see, and therefore depicts the key visual elements that are necessary to understanding the content as an accommodation for blind and low vision viewers." (3PlayMedia.com)
Video length, amount of dialogue and source language all affect turnaround. English-based content is typically available within 2 weeks. Foreign language films are typically available within 3 weeks. Let us know your deadline, as we will expedite an order if necessary.