Race in film from Princess Weekes and my question to Black literature in film?

The video below from Princess Weekes made me really consider phenotype or other forms of race from black writers in black fiction and the interpretation in film. 

One of the big differences with black literature is very little black literature made before the 1900s or even before 1950s has been made into movies. And, whenever literature is made into film, it suffers from the simple reality that a reader visualizes in their mind and the uniqueness of each reader gives each character in a book infinite faces, but a viewer of a film has their visualization filled by the video so the viewer has to compare or contrast and sequentially while readers are free of interpreting anyone's view of a character, the viewer is mandated to relate another's view to their own. And the social media post rise:) 

but i think about how little literature written from blacks before the 1960s or earlier has been made into videos so it  seems a white literary issue when i argue alot of literature written by blacks before the 1960s if made into video will have similar problems, cause one thespian will never look like everyone's vision in their head. 

And I also wonder about black people in animation. So few black animations were made,  with the love of the real image, ala frederick douglass, that black animation doesn't have a discernable style like animation from whites in the usa ala disney or europe, bade dessinee or whites of asia, the japanese. 

my comment to the video below

much ado about nothing, kenneth branaugh:)

I admit, as a writer myself, when I read other writers work i simply define phenotype as they describe. when someone says olive skinned, well, I see the character in my mind as the skin of the average olive, even though olives do come green and dark red.

I think the issue is moving from a book to a film is where the complexity comes in. When a human reads a book your positive or negative biases come to the fore and you visualize characters in your mind. But in video, you are getting the visualization and sequentially, you have to match it to what you have in your mind and usually friction.

It can be argued the problem is people looking to match video with what they saw when they read.

In game of thrones, the summer islanders are real but are described as blue blacks or blackest browns, with no mullattoes/yellas if you know your daughters of the dust/ light skins black folk. I recall in fir and blood one of the dragon riders, who flew the mud dragon was one of the few "DOSer" black folk in the books. she is brown skin, lighter skin than a summer islander but clearly darker skin than the average in westeros.

I have an aside question for you , do you think the small quantity of films made from black literature from the 1960s and before makes it where most, any phenotype in the usa, don't realize how black literary fiction can be represented in video against common perceptions from readers?

the video