I believe this is the one you're talking about
:
http://www.thelurker.com/tv/innsmouthwoooukage.htm
To the best of my knowledge, it still remains unavailable outside Japan, but I'd definitely love to see the thing if I could lay my hands on it ... and with the growing interest in HPL, I'd think some enterprising DVD producer would go ahead and translate the thing.... with just a little advertising in some of the fan sites, it'd be money in the bank....