Solving Guitar Hero's Difficulty Problem

A short history of assigned difficulty in Guitar Hero, Rock Band, Clone Hero, & YARG, as well as an intro to a new metric, a formula, & a Python tool for calculating difficulty from song data. The github: https://github.com/Staycation44/fretw... Test data CSV to look up specific songs: https://github.com/Staycation44/fretw... 0:00 Intro 0:52 Difficulty History (Guitar Hero & Rock Band) 2:53 Modern Difficulty (Clone Hero & YARG) 5:30 Metrics - NPS / Notes Per Second 6:05 Metrics - VPS / Variability Per Second 7:50 Calculating Difficulty 9:36 Using fretwork 10:19 Official song data exploration 12:14 Conclusion Background songs/charts: Megalodon – Jarvis9999 Convergent Rays – Unlucky Morpheus / CSC QUAG #2 / Charted by John Titor Killer Queen – Queen (Wavegroup Cover) / Guitar Hero / Harmonix Open – Olly Steele / CSC Crystallizer / iZenPenguin Black Widow of La Porte - John 5 / Guitar Hero: Warriors of Rock / Neversoft King Aura - Seda / CSC Code Red Vol 1 / ΩHM Will to Survive – Lutharo / CSC March 2022 (Female Led Acts #2) / ThundahK Players featured: ‪@JustJoshinCH‬ Supernovae FC ‪@acai28‬ Penger 0 ghost FC on YARG Default ‪@randyladyman‬ Blindfolded TTFAF FC ‪@CarnyJared‬ Cosmic Embassy grind (FC coming soon) & me playing much worse in the backgrounds Special thanks to ‪@aWiseMoose‬ for his dedicated archiving of FCs and chart comparisons Sources for my project/this video: TheNathannator’s chart docs: https://thenathannator.github.io/Guit... scan-chart repo (helped me understand some concepts): https://github.com/Geomitron/scan-chart/ Mido (Python midi library): https://mido.readthedocs.io/ TheBagelMan’s Daniel (inspired the render view): https://thebagelofman.github.io/Daniel/ CSC’s difficulty guide: https://customsongscentral.com/diff-g... Fullcombo.net’s difficulty guide: https://www.fullcombo.net/clone-hero/... Fullcombo.net’s difficulty proposal: https://www.fullcombo.net/revolutioni... Rock Band hidden values: https://rock-band-customs.gitlab.io/a... Vice History of Guitar Hero: https://www.vice.com/en/article/the-o... Where I found Iain Simon’s book: https://www.gamedeveloper.com/design/... Archive of Harmonix Q&A quote: https://web.archive.org/web/202507080... RB3 Customs Book: https://rhythmgamingworld.com/rock-ba... osu! SR explainer: https://osuppcalculator.com/blog/osu-... Etterna MSD explainer: https://community.etternaonline.com/t... Etterna Calculation architecture: https://deepwiki.com/etternagame/ette...