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#!/bin/bash

# YouTube download script by John Lawrence (http://blog.johnlawrence.net)
#Modified for puppy by trio - 2009
#100514 soliver: fix youtube.com change may 2010.
#100526 soliver: add quality settings

use_err() {
  echo "Usage:   `basename $0` [-f savefile] video_id [-q quality]"
  echo "Quality: `basename $0` -q 5,18,34,35 the higher the better and 13,17 for 3gpp"
  echo "Quality: You'll have to try out what's working for your vid."
  echo "Example: `basename $0` -f Rick oHg5SJYRHA0 -q 18"
  echo "         Saves video with id oHg5SJYRHA0 to Rick.flv in your current directory"
  echo "         with good quality."
  echo
  exit 65
}

if [ ! $1 ]; then use_err; fi

while getopts ":f:" Option
do
  case $Option in
    f     ) fn=$OPTARG;;
    *     ) use_err;;
  esac
done

shift $(($OPTIND - 1))

if [ -z $1 ];  then use_err; fi
if [ -z $fn ]; then fn=$1; fi

vidID=$1
filename=$fn".mp4"

while getopts ":q:" Option
do
  case $Option in
    q     ) q=$OPTARG;;
    *     ) use_err;;
  esac
done

shift $(($OPTIND - 2))

if [ -z $2 ];  then use_err; fi
if [ -z $q ];  then q=$2; fi

quality=$2
qsetting=$q

geturl() { echo "GET $1 HTTP/1.1";echo "Host: $2";echo;echo;sleep 2;echo '^C'; }

echo "Finding hostname"
#100514 soliver: fix youtube.com change may 2010...
#hostl=`geturl /watch youtube.com | nc youtube.com 80 | grep Location | sed 's|Location: http://\([^/]*\)/.*|\1|' | tr -d '\r\n'`
hostl=`geturl /href youtube.com | nc youtube.com 80 | grep Location | sed 's|Location: http://\([^/]*\)/.*|\1|' | tr -d '\r\n'`
echo "Connecting to "$hostl

watch="/watch?v="$vidID
tid=`geturl $watch $hostl | nc youtube.com 80 | grep '"t":' | sed 's/.*"t": "\([^"]*\)".*/\1/'`

echo "Locating video file"
get_video="/get_video?video_id="$vidID"&t="$tid"&el=detailpage&ps=&fmt="$qsetting""
url=`geturl $get_video $hostl | nc youtube.com 80 | grep Location | sed 's/Location: \(.*\)$/\1/' | tr -d '\r\n'`

wget -O - -t 7 -w 5 --waitretry=14 --random-wait '--user-agent=Mozilla/5.0' -e robots=off $url > $filename

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wget -O - -t 7 -w 5 --waitretry=14 --random-wait '--user-agent=Mozilla/5.0' -e robots=off $url > "$filename"