From one angle of analysis it seems obvious that films provide more — when an actor speaks they are a specific person, their face can be read for non-verbal content, the cinematography and setting reflect choices — all of that is available to the eye. It seems like there is more information available to the viewer — however most of that information is arbitrary, and most viewers expect that information to be arbitrary.
For example — a specific scene in some detective film could be described detail by detail, and the literal description might run on for days — but if a writer were to consider the same scene from the point of view of story telling — the unusually shaped knot on the hero’s right shoe might get left out.
Ah! Says the film critic — but that carries the key to solving the whole mystery of the film! Well — if it did, in fact, then it would be included in the writers presentation — because writing is a form of abstraction. Good writing can be defined as the economical presentation of everything you need and absolutely nothing else. Even in the most generous of realistic novels, every word is chosen. It is possible to make a film (Peter Greenaway comes close) where every square inch of screen real estate communicates — but even when you do, it does not communicate in the same way as a book.
Peter Greenaway complains that film has been needlessly wed to the book. We can see this when we compare books and film as if they are trying to do the same thing (which from a marketing perspective they might in fact be trying to do — but from an artistic perspective such an argument is ridiculous.) I think that a film compares to a book in the same way that it compares to a meal, or architecture, or music. Which, in a certain sense is not at all, and in a certain sense is only in very broad aesthetic terms. A meal can be rich, and foreign. A symphony can be loud and strident. But a meal does not give you more information about macaroni, despite the fact that every individual macaroni on the dish is actually passing into your body, than a book about macaroni. In comparing books and film, likewise, different modalities of experience and understanding are getting compressed in metaphors about modalities of experience generally.
Seeing a film is absolutely nothing like reading a book — nothing whatsoever.
A film can be made that treats the subject matter of a book — but it cannot present the content of a book. An image is not an abstraction any more than it is a note. A film can be discussed in a book — a book can be made of all of the words which are used in a film, and even descriptions of the action. But in the end this is no more a reconstruction than if you were to make a symphony based on a meal, and were to include all of the sounds made in the preparation and consumption of the meal. It would be an interesting idea — but it would not be the meal.
We have gotten used to this additional constraint — the constraint of the book on film — but it is a convention. Like the habit of describing time metaphorically in terms of space, we are so used to the substitution that we instinctively think of it as real, which it absolutely is not.
But then people are also prone to confuse reading with reading. Real reading is not easy. It’s like reading continuously as if you were reading for a comprehension test. Very subtle details from one paragraph can be picked up 3 paragraphs later and mirrored, or reversed — a sensitive or trained reader will pick that up — they will even be watching for it. Most people do not read with that level of care — even most people who can read with care typically do not unless they have been cued that a specific writer is worthy of their attention. When reading politics people read, usually, indications and sound bites — they look for an indication that the author is conservative or liberal. And then (knowing ahead of time weather to be shocked or amused) they look for the simple turn on the news of the day.
Then of course there are the genera writers — romance, sci-fi, crime etc. who also write indications — or basically — cliches.
I think that my friend Stefan hit it when he identified what defines the expectation of the average web reader/viewer as being that they are browsing from work, and are looking for something amusing to fill 5 minutes of their time. When I look at the different kinds of “messages” that I get during a day — weather IM, or emails, or comments on different kinds of web sites — all of it is quick-hit. We aren’t looking for any kind of depth. If I write a long response, or use very much nuance or subtlety it isn’t, for the most part, appreciated or even noticed. If I ask a whole string of questions, only one or two will be answered.
So it is this difference of writing from writing which is the basis of my dis-satisfaction with the web, more than the reliance on video imagery. Although I would like to say that the oft repeated cliche that visual images are used to convey a higher depth of information is patently false. Most of the images bouncing around the web are merely clever, or sexy, or cute — just as there is good writing and bad writing, there are rich and poor images, and the web is awash in very shallow imagery for the most part.
In short, I would say that what defines the web right now is not the perceptual psychology of any of the modalities of information presentation which are used on it, as much as the expectations of it’s audience — which are on the whole, pretty low.