* 録音時間 * ffmpegでmp3に変換 * 現在時刻いれる

rec_radiko.sh

#!/bin/sh

playerurl=http://radiko.jp/player/swf/player_3.0.0.01.swf
playerfile=./player.swf
keyfile=./authkey.png

if [ $# -eq 1 ]; then
  channel=$1
  output=./$1.flv
  runtime=10s
elif [ $# -eq 2 ]; then
  channel=$1
  output=$2
  runtime=10s
elif [ $# -eq 3 ]; then
  channel=$1
  output=$2
  runtime=$3
else
  echo "usage : $0 channel_name [outputfile] [rectime]"
  exit 1
fi

recdate=`date +"%Y-%m-%d-%H-%M"`
echo $recdate

#
# get player
#
if [ ! -f $playerfile ]; then
  wget -q -O $playerfile $playerurl

  if [ $? -ne 0 ]; then
    echo "failed get player"
    exit 1
  fi
fi

#
# get keydata (need swftool)
#
if [ ! -f $keyfile ]; then
  swfextract -b 14 $playerfile -o $keyfile

  if [ ! -f $keyfile ]; then
    echo "failed get keydata"
    exit 1
  fi
fi

if [ -f auth1_fms ]; then
  rm -f auth1_fms
fi

#
# access auth1_fms
#
wget -q ¥
     --header="pragma: no-cache" ¥
     --header="X-Radiko-App: pc_1" ¥
     --header="X-Radiko-App-Version: 2.0.1" ¥
     --header="X-Radiko-User: test-stream" ¥
     --header="X-Radiko-Device: pc" ¥
     --post-data='¥r¥n' ¥
     --no-check-certificate ¥
     --save-headers ¥
     https://radiko.jp/v2/api/auth1_fms

if [ $? -ne 0 ]; then
  echo "failed auth1 process"
  exit 1
fi

#
# get partial key
#
authtoken=`perl -ne 'print $1 if(/x-radiko-authtoken: ([¥w-]+)/i)' auth1_fms`
offset=`perl -ne 'print $1 if(/x-radiko-keyoffset: (¥d+)/i)' auth1_fms`
length=`perl -ne 'print $1 if(/x-radiko-keylength: (¥d+)/i)' auth1_fms`

partialkey=`dd if=$keyfile bs=1 skip=${offset} count=${length} 2> /dev/null | base64`

echo "authtoken: ${authtoken} ¥noffset: ${offset} length: ${length} ¥npartialkey: $partialkey"

rm -f auth1_fms

if [ -f auth2_fms ]; then
  rm -f auth2_fms
fi

#
# access auth2_fms
#
wget -q ¥
     --header="pragma: no-cache" ¥
     --header="X-Radiko-App: pc_1" ¥
     --header="X-Radiko-App-Version: 2.0.1" ¥
     --header="X-Radiko-User: test-stream" ¥
     --header="X-Radiko-Device: pc" ¥
     --header="X-Radiko-Authtoken: ${authtoken}" ¥
     --header="X-Radiko-Partialkey: ${partialkey}" ¥
     --post-data='¥r¥n' ¥
     --no-check-certificate ¥
     https://radiko.jp/v2/api/auth2_fms

if [ $? -ne 0 -o ! -f auth2_fms ]; then
  echo "failed auth2 process"
  exit 1
fi

echo "authentication success"

areaid=`perl -ne 'print $1 if(/^([^,]+),/i)' auth2_fms`
echo "areaid: $areaid"

rm -f auth2_fms

#
# get stream-url
#

if [ -f ${channel}.xml ]; then
  rm -f ${channel}.xml
fi

wget -q "http://radiko.jp/v2/station/stream/${channel}.xml"

stream_url=`echo "cat /url/item[1]/text()" | xmllint --shell ${channel}.xml | tail -2 | head -1`
url_parts=(`echo ${stream_url} | perl -pe 's!^(.*)://(.*?)/(.*)/(.*?)$/!$1://$2 $3 $4!'`)

rm -f ${channel}.xml

#
# rtmpdump
#
rtmpdump -v ¥
         -r ${url_parts[0]} ¥
         --app ${url_parts[1]} ¥
         --playpath ${url_parts[2]} ¥
         -W $playerurl ¥
         -C S:"" -C S:"" -C S:"" -C S:$authtoken ¥
         --live ¥
         --flv out.flv &

# timer
pid=$!
sleep $runtime
kill -9 $pid
echo "rec done"

# convert
ffmpeg -i out.flv -acodec libmp3lame -ac 2 -ar 44100 -ab 128k "${output}_${recdate}.mp3"
echo "convert done"

# rm
rm out.flv
rm authkey.png
rm player.swf
echo "complete."