Captain America MCU fight scene without visual effects goes viral and it's easy to see why

While Marvel films are certainly very impressive, there's a thing known as CGI that helps create the impressive scenes we see on screen.

The whole point of CGI is, of course, to enhance a film, but it can sometimes work against a movie and the technology's general purpose.

Henry Cavill's mustache-gate in Justice League is an obvious example that comes to mind of when CGI has gone wrong. There's also Adar in the Lord of the Rings TV show, which fans complained about when it aired.

Henry Cavill's moustache was CGI'd out in Justice League. (Warner Bros.)

And while it's clear there are some unfortunate accidents, CGI has indubitably been instrumental in making superhero movies.

Like Justice League, many superhero movies are CGI-heavy because of all the action involved; Marvel movies included.

From Mark Ruffalo transforming into the Hulk, to Robert Downey Jr.'s impressive Iron Man armor, the MCU probably wouldn't be where it is without technology's help.

But you might be surprised to know that it's not always used, and some scenes are genuinely the actors performing the stunts.

There's one scene in question that people are still impressed with to this day, and that's from Captain America: The Winter Soldier.

The clip that's been widely distributed on Reddit shows Captain America (Chris Evans) and the Winter Soldier (Sebastian Stan) performing an epic highway fight scene.

The fast-paced moment sees the two characters exchanging punches and throwing each other around - as well as the Winter Soldier showing off some undeniably impressive knife skills.

For context, here's the finished clip with all the CGI, and the behind-the-scenes below:

While the scene is amazing in the movie, the fight before visual effects was equally as superb.

In the video (which you can view below), Evans and Stan performed the choreographed routine at a slightly slower pace than what you see in the film, but it still looks pretty good.

Marvel fans have been quick to applaud the pair for their performance.

"Damn, didn’t realize how much of that they did themselves," one person penned on Reddit.

Another explained: "Apparently Chris Evans’ history as a dancer makes him quite good at learning fight choreography."

A third echoed: "The close combat knife fight is insane."

Others noted Stan's knife flip in particular, hailing him as a 'superb actor'.

"t's impressive to watch without all the editing. Great fight choreography! The knife flipping is really cool! MCU fight choreographers are great at their jobs," raved someone else.