some parts of the product make use of other open source code. thanks for related R&D workers.

product contain:

FFmpeg

Authorized under version LGPL 2.1, you can get a copy of the license through this link:

http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
project homepage:
http://www.ffmpeg.org/index.html

libqrencode
Authorized under version LGPL 2.1, you can get a copy of the license through this link: 

http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
project homepage:
http://fukuchi.org/works/qrencode/

c-ares

Authorized under version LGPL MIT, you can get a copy of the license through this link:

http://c-ares.haxx.se/license.html
project homepage:
http://c-ares.haxx.se/

curl

Authorized under version MIT/X, you can get a copy of the license through this link:

http://curl.haxx.se/docs/copyright.html
project homepage:
http://curl.haxx.se/

OpenSSL

Authorized under version Apache-style, you can get a copy of the license through this link:

http://www.openssl.org/source/license.html
project homepage:
http://www.openssl.org/

Expat

Authorized under version MIT, you can get a copy of the license through this link:

http://www.opensource.org/licenses/MIT
project homepage:
http://sourceforge.net/projects/expat

zlib

Authorized under version zlib, you can get a copy of the license through this link:

http://www.zlib.net/zlib_license.html
project homepage:
http://www.zlib.net/

TinyXML

Authorized under version zlib/libpng, you can get a copy of the license through this link:

http://opensource.org/licenses/Zlib
project homepage:
http://sourceforge.net/projects/tinyxml

Libjingle

Authorized under version new 2-clause BSD, you can get a copy of the license through this link:

http://www.opensource.org/licenses/bsd-license.php
project homepage:
http://code.google.com/p/libjingle/

Boost

Authorized under version new Boost, you can get a copy of the license through this link:

http://www.boost.org/LICENSE_1_0.txt
project homepage:
http://www.boost.org/

Speex

Authorized under version new Speex, you can get a copy of the license through this link:

http://www.speex.org/docs/manual/speex-manual/node15.html
project homepage:
http://www.speex.org/

SQLCipher

Authorized under version Zetetic, you can get a copy of the license through this link

https://www.zetetic.net/sqlcipher/license/
project homepage:
https://www.zetetic.net/sqlcipher/