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showcover (523B)

      1 #!/bin/sh
      2 # Extract embedded cover images from all audio files in a directory
      3 # recursively and browse them with nsxiv-rifle.
      4 # Usage: showcover [directory]
      5 
      6 dir="${1:-.}"
      7 [ ! -d "$dir" ] && {
      8 	echo "Not a directory: $dir"
      9 	exit 1
     10 }
     11 
     12 tmpdir=$(mktemp -d)
     13 trap 'rm -rf "$tmpdir"' EXIT
     14 
     15 n=0
     16 find "$dir" -type f | while read -r f; do
     17 	ffmpeg -nostdin -y -i "$f" -an -vcodec copy "${tmpdir}/${n}.jpg" 2>/dev/null && n=$((n + 1))
     18 done
     19 
     20 [ -z "$(ls "$tmpdir")" ] && {
     21 	echo "No cover images found"
     22 	exit 1
     23 }
     24 
     25 nsxiv-rifle "$tmpdir"