code.delx.au - transcoding/blob - rip-audio

   1 #!/bin/bash
   2
   3 MPLAYER="mplayer"
   4 FFMPEG="ffmpeg"
   5
   6 if [ -z "$1" ]; then
   7         echo "Usage: $0 filename"
   8         exit 1
   9 fi
  10
  11 INPUT="$1"
  12
  13 acodec="$("$MPLAYER" -identify -frames 0 "$INPUT" | grep ID_AUDIO_CODEC | cut -d= -f2)"
  14 if [ "$acodec" = "ffaac" ]; then
  15         ext=".m4a"
  16 else
  17         echo "Unknown audio codec! $acodec"
  18         exit 1
  19 fi
  20
  21 OUTPUT="$(basename "$INPUT" | sed 's/\.[a-zA-Z1-9]*$//')${ext}"
  22 "$FFMPEG" -i "$INPUT" -vn -acodec copy "$OUTPUT"
  23