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A complex property can be set with -C <complex-property-key> <key1=val1,key2=val2,...> The second parameter can be set to "" to delete complex properties with the given key. The set complex property values, a simple shorthand syntax can be used. Multiple maps are separated by ';', values within a map are assigned with key=value and separated by a ','. Types are automatically detected, double quotes can be used to force a string. A ByteVector can be constructed from the contents of a file with the path is given after "file://". There is no escape, but hex codes are supported, e.g. "\x2C" to include a ',' and \x3B to include a ';'. Examples: Set a GEOB frame in an ID3v2 tag: examples/tagwriter -C GENERALOBJECT \ 'data=file://file.bin,description=My description,fileName=file.bin,mimeType=application/octet-stream' \ file.mp3 Set an APIC frame in an ID3v2 tag (same as -p file.jpg 'My description'): examples/tagwriter -C PICTURE \ 'data=file://file.jpg,description=My description,pictureType=Front Cover,mimeType=image/jpeg' \ file.mp3 Set an attached file in a Matroska file: examples/tagwriter -C file.bin \ 'fileName=file.bin,data=file://file.bin,mimeType=application/octet-stream' \ file.mka Set simple tag with target type in a Matroska file: examples/tagwriter -C PART_NUMBER \ name=PART_NUMBER,targetTypeValue=20,value=2 file.mka Set simple tag with binary value in a Matroska file: examples/tagwriter -C BINARY \ name=BINARY,data=file://file.bin,targetTypeValue=60 file.mka
TagLib
TagLib Audio Metadata Library
TagLib is a library for reading and editing the metadata of several popular audio formats. Currently, it supports both ID3v1 and ID3v2 for MP3 files, Ogg Vorbis comments and ID3 tags in FLAC, MPC, Speex, WavPack, TrueAudio, WAV, AIFF, MP4, APE, ASF, DSF, DFF and AAC files.
TagLib is distributed under the GNU Lesser General Public License (LGPL) and Mozilla Public License (MPL). Essentially that means that it may be used in proprietary applications, but if changes are made to TagLib they must be contributed back to the project. Please review the licenses if you are considering using TagLib in your project.