Initial commit

skills/video-to-article/scripts/extract-audio.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# extract-audio.sh - Extract audio from video file for lecture transcription
+# Usage: extract-audio.sh <video-file>
+
+set -euo pipefail
+
+VIDEO_FILE="$1"
+
+if [ ! -f "$VIDEO_FILE" ]; then
+    echo "Error: Video file '$VIDEO_FILE' not found" >&2
+    exit 1
+fi
+
+if ! command -v ffmpeg >/dev/null 2>&1; then
+    echo "Error: ffmpeg not found" >&2
+    exit 1
+fi
+
+# Extract audio to audio.mp3
+ffmpeg -i "$VIDEO_FILE" -vn -acodec libmp3lame -q:a 2 audio.mp3 -y 2>&1 | grep -v "^frame="
+
+echo "Audio extracted: audio.mp3"