There is a comment by a YouTube user named @charlesgaston4439 that addresses this observation.
“It looks like that bit of bodycam footage could have been spliced out of sequence tbh. They're looking in the same area where the other officer took it to clear it. Edit: Yep if you look at the timestamps on the top of the screen, that comment is made after the pistol was cleared.”
The “Here’s the casing” bit is at ~1:30.
I’m not vouching for it, but the timestamps do appear to be as YT user @charlesgaston4439 says.
Since searching YT for comments effing sucks balls, go to a comment searcher like the ones below and paste in the URL and search for a bit of text that is in the above quote.
Search comments for a youtube Video
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