I finally realized you meant the license page! Actually, on this page it's clearly stated along with a number of other exceptions to the LGPL v3. This clearly makes the program not open source software under the FSF's definition and I think it would be extremely risky to use even part of this code in your own application.

> videos / streams / contents that are not allowed to be downloaded using this application are:

> DRM "Digital rights management", protected videos / streams or Copyright materials.

> Porn videos/streams or any pornography materials.

> Illegal contents.

> Any contents that encourage/promote violence or criminal/illegal behaviours

This program is NOT open source software.