When converting Niconico to WAV, you will be asked to choose parameters. Here is the cheat sheet:

| Parameter | Niconico Source | Recommended WAV Export | | --- | --- | --- | | Sample Rate | 44.1 kHz or 48 kHz | 44.1 kHz (CD standard) | | Bit Depth | 16-bit (lossy encoded) | 16-bit (no benefit to 24-bit) | | Channels | Stereo or Mono | Stereo (original mix) |

Do not upscale. Setting your WAV to 96 kHz / 24-bit does nothing but waste hard drive space. The source is already compressed. Your WAV should match the source's original sample rate.

Warning: only extract audio from videos you own or have permission to use. Respect copyright and NicoNico's terms of service.

Unlike YouTube, Niconico Douga (2006–present) historically limited video quality and used aggressive CBR (Constant Bitrate) encoding as low as 64kbps AAC-LC for comments-synced streaming. This created unique sonic artifacts:

A standard WAV conversion preserves these flaws faithfully, turning them into forensic evidence of Niconico’s server load at 3 AM in 2012.

WAV files are editable without generational loss. Every time you save an MP3, you lose quality. WAV allows you to cut, loop, and add effects with zero degradation.

Text: Looking to save audio from Niconico? Learn how to easily convert Niconico videos to the WAV audio format. This guide covers the best tools to download and extract high-quality, uncompressed audio files from Niconico Douga links for editing or archival purposes.

A test was conducted on a 2011 upload of “U.N. Owen Was Her?” (Touhou arrangement). Three versions were compared:

Findings:

Conclusion: The “Niconico-to-WAV” process is not about clarity. It’s about forensic fidelity to a broken playback system.

You might ask: Why WAV and not FLAC? FLAC is also lossless but compresses file sizes by 30-50%.

Stick with WAV if:

Use FLAC if:

However, for the Niconico to WAV workflow specifically, most remix contests and sample packs require WAV. So WAV remains the professional standard.