What does it mean when a show has described video??

Question

Beacuse I was watching t.v, and some channels have like shows with DV and I'm not sure what it really means. Thanxx <3

Answer 1

Described Video, which is also known as audio description, video description or DVI (Descriptive Video Information), is a service that provides access to television and recorded video programming for people who are blind or have low vision.  The descriptions are combined with the original sound track on the SAP (Secondary Audio Programming) channel of televised programming or as a separate sound track on other media.