]> code.delx.au - transcoding/blobdiff - fix-pal-speedup
fix-pal-speedup: default to /var/tmp instead of /tmp (tmpfs)
[transcoding] / fix-pal-speedup
index c951ed260629b349c5e1e5b109ac247028e66123..5e6f8d4907be935c9fa6ac79994282f604099d60 100755 (executable)
@@ -3,10 +3,10 @@
 # Many DVDs released in Australia are sped up from 24fps to 25fps.
 # This script reverses the procedure, correcting the audio pitch.
 # The video framerate is adjusted without re-encoding. The audio is slowed and
-# normalised then re-encoded as mp3.
+# volume normalised then re-encoded as mp3.
 
 if [ -z "$1" -o -z "$2" ]; then
-       echo "Usage: $0 destdir infile"
+       echo "Usage: $0 destdir infile [infile ...]"
        exit 1
 fi
 
@@ -14,22 +14,23 @@ FORCEFPS="24"
 SLOWDOWN="0.96"
 
 destdir="$1"
-infile="$2"
-outfile="$destdir/$(basename "$infile")"
-tmpdir="$(tempfile -p 'pal-')"
-rm "$tmpdir"
-
-if [ -f "$outfile" ]; then
-       echo "Not overwriting $outfile"
-       exit 0
-fi
+shift
+
+for infile in "$@"; do
+       outfile="$destdir/$(basename "$infile")"
+
+       if [ -f "$outfile" ]; then
+               echo "Not overwriting $outfile"
+               continue
+       fi
 
-set -x
-mkdir "$tmpdir"
-mplayer -novideo -ao pcm:file="${tmpdir}/audio.wav" -vo null "$infile"
-sox "${tmpdir}/audio.wav" "${tmpdir}/audio-fixed.wav" speed "${SLOWDOWN}" gain -n
-lame --preset standard "${tmpdir}/audio-fixed.wav" "${tmpdir}/audio.mp3"
-mkvmerge -o "${outfile}" --default-duration "1:${FORCEFPS}fps" --no-audio "$infile" "${tmpdir}/audio.mp3"
+       set -x
+       tmpdir="$(mktemp -d "${TMPDIR:-/var/tmp}/pal-XXXXXXXX")"
+       mplayer -novideo -ao pcm:file="${tmpdir}/audio.wav" -vo null "$infile"
+       sox "${tmpdir}/audio.wav" "${tmpdir}/audio-fixed.wav" speed "${SLOWDOWN}" gain -n
+       lame --preset standard "${tmpdir}/audio-fixed.wav" "${tmpdir}/audio.mp3"
+       mkvmerge -o "${outfile}" --default-duration "1:${FORCEFPS}fps" --no-audio "$infile" "${tmpdir}/audio.mp3"
 
-rm -rf "$tmpdir"
+       rm -rf "$tmpdir"
+done