Do you mean the black and white kitty that flashes in at the end of my 1st video? That is my kitty bootsie and that was from a different video, she was perfectly safe, I have no idea how the last seconds of that video is attached to this one, very odd.
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Actually I think I understand, the video was corrupted on my cam when I plugged it in to my USB, I bet the camera overwrote an old deleted file, which is not really deleted, just un addressed, so it attached that bit to the new video, that's probably why is would not play on my media player, but it did upload on ytube and their software spliced in the old remnant bits.
Here's the video that was from, this is a case where the BE output lens which rotates was not staying parallel to the input, the exact thing we were talking about that the excellent Thorlabs BE prevents from happening on the Indigo Imperator.