ML Upscaled/Enhanced to 720p from grainy 480p source (this was a more granular upscaling utilizing Topaz Video AI as the backend). The original broadcast (NHK POPJAM) was recorded using VHS tape (Panasonic VHS Hi-Fi). This is just the OA performance part (not the initial interview with Moriguchi Hiroko). The footage was originally digitized with an PowerMac 8500 (it had AV inputs making it easy to connect to a VCR). Video formats and compression technology (in terms of being cross platform compatible) was not great around this time. Since this was also on a Mac, the Quicktime MOV container format was used along with the Sorenson video codec (since it was included with QT3 and looked the best). A few years later, I re-digitized it (better tech) and used MPEG-4 (various permutations were created since then by others).
Trivia: these on-air performances with bands for music shows are normally backing tracks. Longer songs are also usually shortened (entire section and/or solo removed). Some performers would also lip sync (Hekiru's vocals for this were live).

