[P_Jamula]

Maybe a wrong place for this question ... it can be moved if necessary...
I have a whole bunch of animated GIF's in
userdata\Thumbnails\animatedgifs

eg
tt0062622_background_0_original.gif
tt0062622_poster_0_original.gif
where did these come from??

I like the animated GIFs and had started to get the posters for my collection. Have not added any yet and was pleasantly surprised to see about 52 of them.
is this automated somehow? and
is there an automated way to get the rest rather than manually adding each one.
Thanks...