libmseed - The miniSEED data format library
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libmseed - The Mini-SEED library

The Mini-SEED library provides a framework for manipulation of SEED data records including the unpacking and packing of data records. Functionality is also included for managing waveform data as continuous traces.

All structures of SEED 2.4 data records are supported with the following exceptions: Blockette 2000 opaque data which has an unknown data structure by definition and Blockette 405 which depends on full SEED (SEED including full ASCII headers) for a full data description.

The library should work in Linux, BSD (and derivatives like macOS), Solaris and Win32 environments.


The Wiki provides an overview of using the library. For function level documentation, man pages are included in the doc directory.

Downloading and installing

The releases area contains release versions.

For installation instructions see the INSTALL file. For further information regarding the library interface see the documentation in the 'doc' directory. For example uses of libmseed see the source code in the 'examples' directory.


Copyright (C) 2016 Chad Trabant, IRIS Data Management Center

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License (GNU-LGPL) for more details.

You should have received a copy of the GNU Lesser General Public License along with this software. If not, see


Numerous improvements have been incorporated based on feedback and patches submitted by others. Individual acknowlegements are included in the ChangeLog.

This library also uses code bits published in the public domain and acknowledgement is included in the code whenever possible.

With software provided by (site offline, checked Oct. 2017)