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MacOS Normalize Video Audio for YouTube
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| #!/bin/bash | |
| # Video Audio Normalization Script | |
| # Place this file in /usr/local/bin/video-audio-normalize.sh | |
| # Make executable with `sudo chmod +x /usr/local/bin/video-audio-normalize.sh` | |
| # Usage (global): video-audio-normalize.sh myvideo.mp4 | |
| # Check if a file was provided as an argument | |
| if [ -z "$1" ]; then | |
| echo "Usage: $0 <input_video_file>" | |
| exit 1 | |
| fi | |
| INPUT_FILE="$1" | |
| # Check if the file exists | |
| if [ ! -f "$INPUT_FILE" ]; then | |
| echo "Error: File '$INPUT_FILE' not found." | |
| exit 1 | |
| fi | |
| # Extract the base name and extension to create the output filename | |
| FILENAME=$(basename -- "$INPUT_FILE") | |
| EXTENSION="${FILENAME##*.}" | |
| NAME="${FILENAME%.*}" | |
| # Get the directory of the input file | |
| DIR=$(dirname "$1") | |
| OUTPUT_FILE="${DIR}/${NAME}_normalized.${EXTENSION}" | |
| echo "Processing: $INPUT_FILE" | |
| echo "Target: -14 LUFS, -1dB True Peak" | |
| echo "=========================================" | |
| # Execute ffmpeg | |
| # -c:v copy : Copies the video stream without re-encoding | |
| # -af "loudnorm=I=-14:TP=-1.0" : Applies the loudnorm filter targeting -14 LUFS and -1.0dB True Peak | |
| # -c:a aac -b:a 256k : Re-encodes the audio to AAC at a high quality (adjust bitrate if needed) | |
| ffmpeg -i "$INPUT_FILE" -c:v copy -af "loudnorm=I=-14:TP=-1.0" -c:a aac -b:a 256k "$OUTPUT_FILE" | |
| # Check if the command was successful | |
| if [ $? -eq 0 ]; then | |
| echo "=========================================" | |
| echo "Success! Normalized video saved as: $OUTPUT_FILE" | |
| else | |
| echo "=========================================" | |
| echo "Error: Something went wrong during processing." | |
| fi |
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