Wallace's use of ekphrasis in the context of representing film

1898 ekphrastic poem

some of my early poems were ekphrastic

those are gorgeous lines of ekphrastic verse

I was trying to think of a poetic term for what you do with music, because poetry that’s inspired by paintings is called ekphrastic.

Visual art and artists are everywhere in your work. Where did the interest in ekphrasis begin?