You will most commonly encounter this string in the metadata or filenames of news clips used by broadcasters and digital publishers. When researchers or editors look for "deep content" under this label, they are usually searching for:
: AP maintains one of the world's most comprehensive moving image libraries, and these codes help catalog millions of hours of footage. AP WLmp4
: Often stands for "World Library" or "World News" , indicating the category of the footage within their archive. You will most commonly encounter this string in