Improved version of speedup script.
Fancy coloring, progress in percents, command line options, default speedup rate is taken from a file "SPEEDUP", handling Ctrl-C.
mp3-acceleration script:
#!/bin/bash dir=`dirname $(realpath $0)` DEFAULT_SPEEDUP=`cat $dir/SPEEDUP 2> /dev/null` DEFAULT_SPEEDUP=${DEFAULT_SPEEDUP:-+45} speedup=${1:-${DEFAULT_SPEEDUP}} echo "Using tempo change ${speedup}%" mkdir /tmp/result 2>/dev/null trap interrupt INT function interrupt() { echo -e "\nDeleting unfinished $name" rm "result/$name" 2> /dev/null exit 1 } count=`ls original/*.mp3 2>/dev/null | wc -l` if [ ! $count -gt 0 ]; then echo "No input files" exit 0 fi i=1 for f in original/*.mp3; do name=`basename "$f"` if [ ! -f "result/$name" ]; then printf "\E[32m%3.0f%%\E[0m Processing %s" "$(($i*100/$count))." "$name" lame --quiet --decode "$f" - | soundstretch stdin stdout -tempo=$speedup -speech 2>/dev/null | lame --quiet -m a -cbr -b 64 --resample 24 - "result/$name" echo -e "\E[32m Done\E[0m" else printf "\E[32m%3.0f%%\E[0m Skipping %s\n" "$(($i*100/$count))" "$name" fi i=$((i+1)) done
mp4-sound-extraction and acceleration script:
#!/bin/bash dir=`dirname $(realpath $0)` DEFAULT_SPEEDUP=`cat $dir/SPEEDUP 2> /dev/null` DEFAULT_SPEEDUP=${DEFAULT_SPEEDUP:-+45} DEFAULT_SOURCE=original trap interrupt INT function interrupt() { echo -e "\nDeleting unfinished $name.mp3" rm "result/$name.mp3" 2> /dev/null rm /tmp/temp.wav 2> /dev/null rm /tmp/temp.mp4a 2> /dev/null exit 1 } original=$1 if [ ! -d "$original" ]; then speedup=${original:-${DEFAULT_SPEEDUP}} original=${2:-$DEFAULT_SOURCE} else speedup=${2:-${DEFAULT_SPEEDUP}} fi if [ "$speedup" == "0" ]; then echo "Only extracting" else echo "Using tempo change ${speedup}%" fi echo "Using source directory ${original}" mkdir /tmp/result 2>/dev/null count=`ls $original/*.mp4 2>/dev/null | wc -l` if [ ! $count -gt 0 ]; then echo "No input files" exit 0 fi i=1 for f in $original/*.mp4; do name=`basename "$f" .mp4` if [ ! -f "result/$name.mp3" ]; then printf "\E[32m%3.0f%%\E[0m Processing %s. \E[32mExtracting...\E[0m" "$(($i*100/$count))" "$name.mp4" mplayer "$f" -dumpaudio -dumpfile /tmp/temp.mp4a > /dev/null 2>&1 faad /tmp/temp.mp4a > /dev/null 2>&1 if [ "$speedup" == "0" ]; then lame --quiet -m a -cbr -b 64 --resample 24 /tmp/temp.wav "result/${name}.mp3" echo -e "\b\b\b\b\b\b\b\b\b\b\b\b\bExtracting. \E[32mDone\E[0m" else echo -en "\b\b\b\b\b\b\b\b\b\b\b\b\bExtracting. \E[32mSpeeding up...\E[0m" soundstretch /tmp/temp.wav stdout -tempo=$speedup -speech 2>/dev/null | lame --quiet -m a -cbr -b 64 --resample 24 - "result/${name}.mp3" echo -e "\b\b\b\b\b\b\b\b\b\b\b\b\b\bSpeeding up. \E[32mDone\E[0m" fi rm /tmp/temp.wav 2> /dev/null rm /tmp/temp.mp4a 2> /dev/null else printf "\E[32m%3.0f%%\E[0m Skipping %s\n" "$(($i*100/$count))" "$name.mp4" fi i=$((i+1)) done
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