Problem
Diagnose distortion introduced by export or platform loudness processing.
Solution
Root Cause / Diagnostic:
Exporting audio with peak levels pushed right against 0.0 dBFS causes inter-sample peaks when YouTube's lossy AAC/Opus transcoders compress the audio stream. Additionally, if the integrated loudness exceeds platform normalization thresholds (e.g., louder than -14 LUFS), YouTube's automated limiter clamps down, causing audible pumping and harsh digital distortion.
Actionable Step-by-Step Fix:
1. Set True Peak Ceiling to -1.0 dBTP: Configure your master limiter with a true-peak ceiling of -1.0 dB to leave sufficient headroom for platform lossy transcoding.
2. Target -14 to -15 Integrated LUFS: Master your Short's total audio mix between -14 and -15 LUFS, preventing YouTube's normalization engine from forcibly attenuating your video.
3. Inspect 'Stats for Nerds' Post-Upload: Right-click your uploaded Short on desktop and check 'Stats for Nerds' to ensure 'Volume / Normalized' reads 100% / 100% (indicating no platform gain reduction).
Pro Creator Tip:
Pushing to 0 dB in your video editor guarantees distortion after upload; leave a -1.0 dB true-peak ceiling to survive YouTube's audio compression unscathed.
Exporting audio with peak levels pushed right against 0.0 dBFS causes inter-sample peaks when YouTube's lossy AAC/Opus transcoders compress the audio stream. Additionally, if the integrated loudness exceeds platform normalization thresholds (e.g., louder than -14 LUFS), YouTube's automated limiter clamps down, causing audible pumping and harsh digital distortion.
Actionable Step-by-Step Fix:
1. Set True Peak Ceiling to -1.0 dBTP: Configure your master limiter with a true-peak ceiling of -1.0 dB to leave sufficient headroom for platform lossy transcoding.
2. Target -14 to -15 Integrated LUFS: Master your Short's total audio mix between -14 and -15 LUFS, preventing YouTube's normalization engine from forcibly attenuating your video.
3. Inspect 'Stats for Nerds' Post-Upload: Right-click your uploaded Short on desktop and check 'Stats for Nerds' to ensure 'Volume / Normalized' reads 100% / 100% (indicating no platform gain reduction).
Pro Creator Tip:
Pushing to 0 dB in your video editor guarantees distortion after upload; leave a -1.0 dB true-peak ceiling to survive YouTube's audio compression unscathed.