ffmpeg Audio FX

Context: $ARGUMENTS

Creative and restoration audio effects. -af chain syntax. Every recipe below is verified against the FFmpeg filters doc. For basic gain / EQ / loudnorm / tempo see the sibling ffmpeg-audio-filter skill — this one is modulation, delay, restoration, true-peak limiting, dynamic EQ, spectral domain, and plugin hosts.

Quick start

• Add echo — Step 2 (Delay group), recipe aecho.
• Chorus / flanger / phaser / tremolo / vibrato — Step 2 (Modulation group).
• Normalize speech for a podcast — Step 2 (Dynamics group), recipe speechnorm.
• Rescue vinyl rip — Step 2 (Restoration group), chain adeclick → adeclip.
• Broadcast-safe true-peak limit — apsyclip (Dynamics group).
• Host a LADSPA or LV2 plugin — Step 2 (Plugin group).
• Shift frequencies (not pitch) — afreqshift (Filter-curve group).

When to use