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www/libresonic-standalone/files/message-transcoding.in
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| Transcoding in Libresonic is a way to re-encode music on the fly to a format | |||||
| your listening device supports. A common use is transcoding FLAC, WMA, and | |||||
| Vorbis audio to MP3 for devices supporting only that codec. | |||||
| Configuring transcoding uses up to three commands one would use on a normal | |||||
| command line pipe but with a whitelist of executables installed or linked into | |||||
| %%LIBRESONIC_HOME%%/transcode. The transcoding configuration page takes | |||||
| transcoding rules in the form of: | |||||
| [rule name] [convert from] [convert to] [command 1] [command 2] [command 3] | |||||
| The most compatible single audio transcoding command is with FFmpeg, transcoding | |||||
| any input to MP3, mapping all streams to output, and limiting metadata to the | |||||
| more-compatible ID3v2.3: | |||||
| [All to MP3] [ogg flac wma aiff m4a] [mp3] ... | |||||
| [ffmpeg -i %s -ab %bk -id3v2_version 3 -map_metadata 0 -map 0:0 -ar 44100 -ac 2 -v 0 -f mp3 -] | |||||
| You can also transcode with multiple single-codec commands to avoid | |||||
| the heavy FFmpeg dependency: | |||||
| [FLAC to MP3] [flac] [mp3] ... | |||||
| [flac --silent --decode --stdout %s] [lame --silent -h -b %b -] | |||||
| [AAC to MP3] [m4a] [mp3] ... | |||||
| [faad -s -o - %s] [lame --silent -h -b %b -] | |||||
| [Vorbis to MP3] [ogg] [mp3] ... | |||||
| [oggdec -Q -o /dev/stdout %s] [lame --silent -h -b %b -] | |||||
| [MPC to MP3] [mpc] [mp3] ... | |||||
| [mpcdec %s -] [lame --silent -h -b %b -] | |||||
| [APE to MP3] [ape] [mp3] ... | |||||
| [mac %s - -d] [lame --silent -h -b %b -] | |||||
| [Trackers to MP3] [mod s3m xm it] [mp3] ... | |||||
| [xmp -q -c %s] [lame --silent -h -b %b -] | |||||