I think you need to work with it a bit more.
Pictures and videos are lucky guesses.
My first thought was that it's an ASIC chip but then why bother hiding your own numbers.
Dave's pictures have a chip where smearing is not straight.
There top left could be a logo or a part of it.
Last line could be 630-8411.1
Post number in Nara, Japan?
Get a stobe light a bit off from camera sync and a polarisation raster film plate.
Light up, put the plate over the chip, look the picture through the camera and pick your angle.
Having intensity adjusting trigger is not bad.
Maybe a bit less is enough.
In case you are sensitive, have a puke bucket nearby and don't be going anywhere shortly afterwards.
(I have a Doom sickness)