Add album art to mp3 or m4a with ffmpeg

Bash funkce set-cover pro vložení cover image do MP3 nebo M4A souborů. Přidej ji do .bashrc nebo .bash_profile.

# Set cover image to audio files
# example: set-cover -i cover.png *.mp3
function set-cover() {
  if [ -z "$1" ] || [ -z "$2" ]; then
    echo "Usage: set-cover cover.png|jpg *.mp3|*.m4a"
    return 1
  fi

  # Check if ffmpeg is installed
  if ! command -v ffmpeg &>/dev/null; then
    echo "Error: ffmpeg is not installed."
    return 1
  fi

  cover="$1"
  shift
  files=("$@")

  for file in "${files[@]}"; do
    ext="${file##*.}"
    output="out.${ext}"

    # common arguments
    args=(-y -loglevel error -hide_banner -nostats -i "$file" -i "$cover" -codec copy -map 0:a -map 1)

    # set cover image based on file extension
    if [ "$ext" = "mp3" ]; then
      ffmpeg "${args[@]}" -metadata:s:v title="Album Cover" -metadata:s:v comment="Cover (front)" "$output" && mv "$output" "$file"
    elif [ "$ext" = "m4a" ]; then
      ffmpeg "${args[@]}" -disposition:v:0 attached_pic "$output" && mv "$output" "$file"
    fi
  done
}

Then you can use the function like this:

set-cover cover.jpg *.mp3