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Tuesday, December 1, 2015

SoX − Sound eXchange, the Swiss Army knife of audio manipulation

http://sox.sourceforge.net/sox.html


ffmpeg -ss 10 -t 6 -i input.mp3 output.mp3
ffmpeg -ss 10 -to 16 -i input.mp3 output.mp3
sox input.mp3 output.mp3 trim 10 6

1 comment:

  1. #!/bin/bash
    #Youtube-DL DASH Video and Audio merging script
    #Written by QuidsUp
    #Edited by Christoph Korn

    File1New=video.mp4
    File2New=audio.m4a

    URL=$1
    if [ -z $URL ]; then
    echo "Usage: ytdl.sh url"
    exit
    fi

    #Find what quality of videos are available
    youtube-dl -F $URL
    echo
    echo -n "Quality for Video (default 137): "
    read Qual1
    echo -n "Quality for Audio (default 141): "
    read Qual2

    #Set values if user has just pressed Return without typing anything
    if [ -z $Qual1 ]; then
    Qual1="137"
    fi
    if [ -z $Qual2 ]; then
    Qual2="141"
    fi

    #Set filenames from output of youtube-dl
    File1=$(youtube-dl --get-filename -f $Qual1 $URL)
    File2=$(youtube-dl --get-filename -f $Qual2 $URL)
    echo $File1
    echo $File2
    Out=${File1:0:${#File1}-16}".mp4"
    echo $Out

    #Download Video file with First Quality Setting
    youtube-dl -f $Qual1 $URL
    if [[ ! -f $File1 ]]; then
    echo
    echo "Error video file not downloaded"
    exit
    fi
    mv "$File1" "$File1New"

    #Download Audio file with Second Quality Setting
    youtube-dl -f $Qual2 $URL
    if [[ ! -f $File2 ]]; then
    echo
    echo "Error audio file not downloaded"
    exit
    fi
    mv "$File2" "$File2New"

    File1=$File1New
    File2=$File2New

    #Merge Audio and Video with ffmpeg
    #Delete -threads 0 if you have a Single Core CPU
    echo
    echo "Combining Audio and Video files with FFMpeg"
    ffmpeg -i "$File1" -i "$File2" -sameq -threads 0 "$Out"
    if [[ -f $Out ]]; then
    echo
    echo "File" $Out "created"
    else
    echo
    echo "Error Unable to combine Audio and Video files with FFMpeg"
    exit
    fi

    #Remove old Files
    rm "$File1"
    rm "$File2"

    ReplyDelete