Ffmpeg Audio Filter

Context: $ARGUMENTS

Quick start

• Loudness normalize (YouTube, podcast, broadcast): 2-pass loudnorm → Step 1
• Quick volume bump/cut: volume filter → Step 2
• Change speed without pitch shift: atempo (chain if outside 0.5–2.0) → Step 2
• Mix two tracks (voice over music): amix with aresample + aformat guards → Step 2
• Stereo → mono / 5.1 → stereo: pan with explicit channel map → Step 2
• Trim leading/trailing silence: silenceremove → Step 2
• Verify result: ebur128 or astats → Step 3

When to use