Let's see... CED? Just barely! Game Boy Advance Video? Yeah, a few made it on there, too!! VideoNow? Shockingly enough... YES!!! One of the most curious video formats anime has ever seen release on, though, would have to also be one of the most obscure, and in particular two specific OVAs that took advantage of a special feature that was actually decades ahead of its time: VHD.
First demonstrated back in 1978 by JVC, after the company first established a video disc lab in 1974, Video High Density/VHD was a capacitance-based video format that was most similar to RCA's Capacitance Electronic Disc/CED in that both housed their respective record-esque discs inside caddies, so that the user would never actually handle the disc itself, but where CED used physical grooves to read the data stored VHD was electronically read. Also much like RCA's format, though, JVC's format suffered numerous delays & wouldn't actually see release until 1983, two years after CED had already launched & bombed, and in the end VHD would only ever really see release in Japan, though it did see some minor usage in the US & UK for things like education, training, demonstration, & (most notably) karaoke, the last of which was more or less the main reason why it even saw continued (but highly limited) support by JVC until 2003. To no surprise, there were various anime that saw release on VHD in Japan, though it was in no way as supported as even LD was over there. However, VHD did have one thing up its sleeve that no other video format had: 3D Support!
In 1985 JVC started releasing VHD players that supported stereoscopic video playback by way of things like shutter glasses that could be plugged into the player, predating modern 3D support by ~20 years; in doing this, though, discs could only store 30 minutes of footage on each side, instead of the usual 60. Somehow, JVC managed to convince two anime studios to actually give this a try, resulting in two OVAs being released on "3D Video Disc", which quite honestly sounds both absolutely amazing ("Hand-Drawn Animation... in 3D!") & absolutely absurd ("Hand-Drawn Animation... in 3D?"). Unfortunately, likely because of just how wild this concept sounds, both of these OVAs didn't actually come out until the latter half of 1987, which by that point was way too late to the party for 3D anime on VHD; I mean, VHD was late to the party in general, but these OVAs were arriving right as everyone was leaving. Because of that, both of these OVAs did later see "normal" 2D release on VHS, and actually watching these in their originally intended style (i.e. on a 3D-compatible VHD player with shutter glasses) is both a bit obtuse & (more than likely) wildly expensive today. Still, was there anything to these OVAs other than a 3D gimmick? I say let's find out, as both have been fansubbed over the years.