Speeding up films and podcasts, improved

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

Published: Jul 25, 2013, 1:44:19 AM - Modified: Jul 25, 2013, 2:35:33 PM
Tags: bash, linux
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