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name: mix-audio description: Professional audio mixing guide

Mix Audio

Guide for professional audio mixing in video production.

Usage

Copy/mix-audio

Layers (Bottom to Top)

1. Ambience (-18dB) - Ocean, room tone, environment
2. Music (-12dB) - Background score, ducked during speech
3. Voiceover (-6dB) - Primary narration, clear and present
4. SFX (-9dB) - Sound effects, transitions

ffmpeg Audio Filter Graph

Copy# Mix voiceover + ambience
ffmpeg -i video.mp4 -i voiceover.mp3 -i ambience.mp3 \
  -filter_complex "[1:a]volume=1.0[vo];[2:a]volume=0.3[amb];[vo][amb]amix=inputs=2" \
  -c:v copy output.mp4

ElevenLabs Tips

• Stability: 0.5-0.7 (higher = more consistent)
• Similarity: 0.7-0.8 (match reference voice)
• Style: 0.2-0.4 (subtle emotional variation)

Ducking

Reduce ambience/music when voiceover plays:

Copy-filter_complex "[1:a]asplit[vo][duck];[duck]agate=threshold=-30dB[gate];[2:a][gate]sidechaincompress[amb]"