Daniel Radcliffe and Emma Watson 'in competition' during filming
Speaking to ABC, the director said the scenes where Radcliffe's, Watson's and Rupert Grint's characters try to avoid capture by snatchers is an "exciting sequence".
On behind-the-scenes footage premiered on ABC, Yates said: "They run like maniacs and it's because they are trying to out-compete each other.
"Dan wants to run faster than Emma. Emma wants to run faster than Dan and Rupert just wants to be anywhere to try to keep up with the pair of them," he joked.
Due for release on November 19th 2010, Harry Potter and the Deathly Hallows: Part I also stars Ralph Fiennes, Helena Bonham Carter, Tom Felton, Alan Rickman, Bonnie Wright and Michael Gambon.
The final instalment of the Harry Potter franchise will be released in July 2011.