The Flash TV series has a very distinctive way of portraying Barry Allen's super speed, but the Justice League trailer made it clear that the DC Films Universe will be taking things in a slightly different direction. For starters, the movie obviously has a much bigger budget, and based on comments from star Ezra Miller, it sounds like Zack Snyder has decided to take things in a very unique new direction. 
 

"Sometimes they make me run. Which I was outraged because I thought, you know, playing The Flash, this will be great, you can’t see him running so this will be easy! No, no, Ezra, we need you to run. We have this enormous treadmill that’s called, I think, The Tumblelator, that’s like 25 feet long, goes 45 miles per hour and its bouncy, like a trampoline. Pretty much a dream come true. Then, they strap me into a harness, we do all sorts of stuff. What we’re creating is a vocabulary;
Source: COMIC BOOK MOVIES