The fact of the matter is, in this particular case, you don't need a high frame rate camera to capture the different timing of the events i.e. (1) the explosion, and then a few frames later, (2) the bright streak of light, which should be what was remains of the round after hitting the truck and passing through it from the left direction of the picture (not from the right as most here seem to assume).
The time when you actually see the explosion and the streak of light in one, or any number of frames, of the footage, would be an indication the frame rate of the camera isn't high enough to capture the different timing of the 2 events.
You will see exactly the same different timings of the 2 events since the frame rate was already high enough to capture the different timings to begin with.
The only exception is you see more of the different stages of transitions for the 2 events. For example, you could see the different stages of the explosion and then follow by what was the remains of the round coming out of the right side of the explosion (or what was still remaining of the truck) and then seeing it slowly moving to the right side of the picture frame, i.e. not just seeing it as a streak of light when using just a normal camera.
