You can use specialized software or online tools to handle the conversion: Audacity (Desktop)
Press the button in Audacity, then immediately hit play on the Niconico video.
In the output format dropdown menu, change the default selection from MP3 to WAV .
If you are a music producer, video editor, or content creator, importing WAV files into your Digital Audio Workstation (DAW) or video editor ensures that the audio does not degrade when you re-export your project.
Before you start building your library, keep these points in mind:
In this article, we'll explore the various methods for converting Niconico videos to WAV files. We'll cover online converters, desktop software, and browser extensions, providing you with a comprehensive guide to help you achieve your goal.
If you are archiving a producer's entire discography, use this FFmpeg one-liner after downloading with youtube-dl :
Click and paste your Niconico URL, then click Analyze .
For power users who want to download entire playlists or high-resolution audio, desktop software is the most reliable route.