1 | #!/usr/bin/perl -w |
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2 | # dvbradioexport.pl v2.0 |
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3 | # By Justin Hornsby 22 October 2006 |
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4 | # |
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5 | # Storage Group Support by Stuart Auchterlonie 28 April 2007 |
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6 | # |
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7 | # A MythTV user job script for exporting DVB radio recordings to MP3 format |
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8 | # |
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9 | # Usage info will be output if the script is run with no arguments (or insufficient arguments) |
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10 | # |
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11 | # Contains elements of mythtv.pl by Nigel Pearson |
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12 | # Initial idea from nuvexport |
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13 | # |
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14 | # requirements: id3tag, ffmpeg with mp3 exporting enabled, PERL and the DBI & DBD::mysql modules |
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15 | # |
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16 | |
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17 | # PERL MODULES WE WILL BE USING |
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18 | use DBI; |
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19 | use DBD::mysql; |
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20 | use MythTV; |
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21 | |
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22 | my $exportdir = '/home/mythtv/'; |
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23 | my $maxbitrate = '256'; |
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24 | my $bitrate = '192'; |
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25 | |
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26 | $connect = undef; |
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27 | $debug = 0; |
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28 | |
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29 | ################################## |
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30 | # # |
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31 | # Main code starts here !! # |
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32 | # # |
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33 | ################################## |
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34 | |
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35 | $usage = "\nHow to use dvbradioexport.pl \n\ndvbradioexport.pl exportdir=/foo/bar starttime=%STARTTIME% |
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36 | chanid=%CHANID maxbitrate=x debug\n" |
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37 | ."\n%CHANID% = channel ID associated with the recording to export\n" |
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38 | ."%STARTTIME% = recording start time in either 'yyyy-mm-dd hh:mm:ss' or 'yyyymmddhhmmss' format\n" |
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39 | ."exportdir = dir to export completed MP3 files to (note the user the script runs as must have write permission on that dir\n" |
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40 | ."maxbitrate = maximum bitrate for the export to use. If more than the original file's bitrate, the original |
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41 | bitrate will be used \n" |
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42 | ."debug = enable debugging information - outputs which commands would be run etc\n"; |
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43 | |
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44 | # get this script's ARGS |
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45 | # |
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46 | |
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47 | $num = $#ARGV + 1; |
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48 | |
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49 | # if user hasn't passed enough arguments, die and print the usage info |
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50 | |
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51 | if ($num le "2") { |
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52 | die "$usage"; |
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53 | } |
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54 | |
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55 | # |
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56 | # Get all the arguments |
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57 | # |
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58 | |
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59 | foreach (@ARGV){ |
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60 | if ($_ =~ m/debug/) { |
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61 | $debug = 1; |
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62 | } |
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63 | elsif ($_ =~ m/maxbitrate/) { |
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64 | $maxbitrate = (split(/\=/,$_))[1]; |
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65 | } |
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66 | elsif ($_ =~ m/starttime/) { |
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67 | $starttime = (split(/\=/,$_))[1]; |
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68 | } |
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69 | elsif ($_ =~ m/chanid/) { |
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70 | $chanid = (split(/\=/,$_))[1]; |
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71 | } |
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72 | elsif ($_ =~ m/exportdir/) { |
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73 | $exportdir = (split(/\=/,$_))[1]; |
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74 | } |
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75 | } |
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76 | |
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77 | # connect to backend |
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78 | my $myth = new MythTV(); |
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79 | # connect to database |
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80 | $connect = $myth->{'dbh'}; |
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81 | |
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82 | # PREPARE THE QUERY |
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83 | $query = "SELECT title, subtitle, basename FROM recorded WHERE chanid=$chanid AND starttime='$starttime'"; |
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84 | $query_handle = $connect->prepare($query); |
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85 | $query_handle->execute() || die "Cannot connect to database \n"; |
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86 | |
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87 | # BIND TABLE COLUMNS TO VARIABLES |
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88 | $query_handle->bind_columns(undef, \$title, \$subtitle, \$basename); |
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89 | |
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90 | # LOOP THROUGH RESULTS |
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91 | $query_handle->fetch(); |
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92 | |
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93 | my $schemaVer = $myth->backend_setting('DBSchemaVer'); |
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94 | # Storage Groups were added in DBSchemaVer 1171 |
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95 | # FIND WHERE THE RECORDINGS LIVE |
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96 | my $dir = 'UNKNOWN'; |
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97 | if ($schemaVer < 1171) |
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98 | { |
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99 | if ($debug) { |
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100 | print ("Using compatibility mode\n"); |
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101 | } |
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102 | $dir = $myth->backend_setting('RecordFilePrefix'); |
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103 | } |
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104 | else |
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105 | { |
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106 | if ($debug) { |
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107 | print ("Going into new mode\n"); |
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108 | } |
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109 | my $storagegroup = new MythTV::StorageGroup(); |
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110 | $dir = $storagegroup->FindRecordingDir($basename); |
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111 | } |
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112 | |
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113 | # FIND OUT THE CHANNEL NAME |
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114 | $query = "SELECT name FROM channel WHERE chanid=$chanid"; |
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115 | $query_handle = $connect->prepare($query); |
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116 | $query_handle->execute() || die "Unable to query settings table"; |
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117 | |
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118 | my ($channame) = $query_handle->fetchrow_array; |
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119 | |
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120 | # replace whitespace in channame with dashes |
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121 | $channame =~ s/\s+/-/g; |
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122 | |
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123 | # replace whitespace in title with underscores |
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124 | $title =~ s/\W+/_/g; |
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125 | # replace whitespace in subtitle with underscores |
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126 | $subtitle =~ s/\W+/_/g; |
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127 | |
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128 | # |
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129 | # Remove non alphanumeric chars from $starttime & $endtime |
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130 | # |
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131 | |
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132 | $newstarttime = $starttime; |
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133 | |
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134 | $newstarttime =~ s/[|^\W|\s|-|]//g; |
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135 | |
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136 | $year = substr($newstarttime, 0, 4); |
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137 | |
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138 | $filename = $dir."/".$chanid."_".$newstarttime.".mpg"; |
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139 | |
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140 | $newfilename = $exportdir."/".$channame."_".$title."_".$subtitle."_".$newstarttime.".mp3"; |
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141 | |
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142 | if ($debug) |
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143 | { |
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144 | print "\n\n Source filename:$filename \nDestination filename:$newfilename\n \n"; |
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145 | } |
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146 | # |
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147 | # Now run ffmpeg to find out what bitrate the stream is |
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148 | # |
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149 | |
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150 | $output = `ffmpeg -i $filename 2>&1`; |
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151 | |
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152 | @words = split(/Audio/, $output); |
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153 | @br = split(/\,/, $words[1]); |
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154 | @out = split(/kb/, $br[3]); |
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155 | |
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156 | $origbitrate = $out[0]; |
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157 | |
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158 | # |
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159 | # If maximum bitrate is less than the source bitrate, allow the max bitrate to remain |
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160 | # |
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161 | |
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162 | $bitrate = $maxbitrate; |
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163 | |
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164 | if ($maxbitrate > $origbitrate) { |
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165 | print "maxbitrate is greater than original. Using source bitrate to save space\n"; |
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166 | $bitrate = $origbitrate; |
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167 | } |
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168 | |
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169 | # |
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170 | # Now run ffmpeg to get mp3 out of the dvb radio recording |
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171 | # |
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172 | |
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173 | $command = "nice -n19 ffmpeg -i $filename -ab $bitrate -acodec mp3 -f mp3 '$newfilename' 2>&1"; |
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174 | |
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175 | if ($debug) { |
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176 | print "\n\nUSING $command \n\n"; |
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177 | } |
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178 | |
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179 | system "$command"; |
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180 | |
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181 | # Now tag the finished MP3 file |
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182 | |
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183 | $command = "id3tag --song='$title' --album='$subtitle' --artist='$channame' --comment='Transcoded by MythTV' --year=$year '$newfilename'"; |
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184 | |
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185 | if ($debug) { |
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186 | print "\n\nUsing $command \n\n"; |
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187 | } |
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188 | system "$command"; |
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