24 lines
533 B
Bash
Executable File
24 lines
533 B
Bash
Executable File
#!/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"
|