You can't conclude anything either way from this video.
If you want it to have credibility, first:

• Establish that the shown explosion is actually the Pentagon and not a gas station blowing up in Shitville, West Dakota.
• Proof -scientifically- that the video is not edited.
• Identify the hotel, establish the angle at which the camera was filming at the time of the incident, make a topological study of the environment there (to establish whether the flight path was actually above the camera's horizon, obviously impeded by an elevated highway), and do the maths.
• Check out the build and framerate of the camera to check whether it's actually capable of capturing the high speed passage of a plane (camera optics is a weird field, just ask the 'rod people')

If all the previous -apart from things I might've missed- would check out, yes, then, and only then there might be a problem. But I'm not holding my breath here.

Oh, not to mention how a video that is meant to show a government conspiracy has an official flight path indicator (in the form a red arrow, LOL)

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