How can we help this video?

Paul has this great video of his ted talk.

Only, the first 20 seconds have no sound, and the next 20 seconds are quite overdriven.

Which means people are less likely to watch it all the way through

Are there ways I could help this video (which I don't own) to sound better?

Are there ways I can help this video perform better on youtube without making it sound better?

Open to all ideas.

My first thoughts were subtitles, but if you can't change the video I don't think you can put these in?

Making videos is a lot like cooking.

Smell is 90% of the dish.  looks 9%.  Taste is only about 1%.  Get the smell and the looks right and the brain will believe it tastes amazing.  

So for a youtube video it looks more like:
Sound 90%
storytelling 9%
visuals 1%

(different ratios for paid content, but most people don't think of youtube as paid because they are paying by watching ads)

If you got to the video at youtube, and hover the mouse over the time bar at the bottom of the video, it shows you the parts that people watched the most (and the parts where they lost interest)

I wonder if that could be used to cut out some of the less interesting parts - provided they don't add to the story/message.  

Youtube loves retention graphs as a metric of showing "what a real human is interested in"