The raw footage is graphic so we're not publishing it -- instead, we've cut screen grabs showing the efforts to save Cedric and his female passenger ... with one person even using a fire extinguisher to put out flames on the former running back.

As we previously reported, Benson and his passenger were riding a BMW motorcycle on a popular highway in Austin, Texas at around 10:20 p.m. when he collided with a white minivan.

In new footage obtained by TMZ Sports, you can see at least 6 cars have pulled over near the crash and a handful of people raced over to Cedric to help out.

The video shows Cedric's burning motorcycle propped against the driver's side door of the mini van, which is fully engulfed in flames. Cedric and his passenger are down on the road nearby.

The person who shot the video notes that no emergency personnel had arrived when the video was being shot -- you don't see any flashing lights.

One good Samaritan grabbed a fire extinguisher and tended to Benson, who appeared to be smoldering from the wreck.

Fire and rescue arrived a short time later -- but it was too late. Benson and his passenger were pronounced dead on the scene by law enforcement officials. No cause of death has been officially released.

36-year-old Benson had sadly posted a picture of his bike on Instagram just hours the before the crash, saying, "My Saturday evening."

We've reached out to the Austin Police Department for comment on the new footage ... and they say they'll have more details on the accident later Monday.