The "proper" way to handle this, as defined by community standards and technical extraction tools, involves two primary phases: 1. High-Quality Video Extraction
Several methods exist to convert NicoNico videos to WAV audio files: niconico to wav
Converting a 64kbps source to 1411kbps WAV is mathematically pointless for quality gain. Yet users do it for three cultural reasons: The "proper" way to handle this, as defined