General

How accurate is the analysis? Each metric uses multiple detection engines that vote on the result. Confidence scores tell you how much the engines agree. Typical accuracy: BPM 90–94%, Key 91–94%, Hz 94–97%.

What's the maximum track length? Tracks up to 15 minutes are supported. Longer tracks are automatically truncated.

What audio quality is used for analysis? The bot downloads the highest available audio quality from each platform. For YouTube, this is typically 128–256 kbps AAC.

Is the analysis result cached? Yes, URL-based analyses are cached. If you analyze the same URL twice, the second request returns instantly. File uploads are always analyzed fresh.