Legalities of KMPlayer

[General Starr]

Hello, I know what has been said about the legalities of KMPlayer ([Only registered and activated users can see links]), but I do have a concern. It's been five years since the thread titled "Do not believe bad rumors spread in networks" was posted and KMPlayer is STILL on the Hall of Shame ([Only registered and activated users can see links]). Also, in the section of the post titled "Libraries Information packed in the full & install version of The KMPlayer", libavcodec is there which is a FFmpeg library. Not even mentioning the potential problem of using FFmpeg due to questions of it's legality, KMPlayer does have a piece of FFmpeg in it. Could someone comment on this please?

[bastik]

This should say much:
[Only registered and activated users can see links]

[General Starr]

After reading that article I have two questions: 1, In the FFmpeg license agreement, does it say anything concerning what version of the LGPL can be used? (e.g. LGPL v2 or later). If not then you're in trouble. 2, On a separate note, is KMPlayer legal? The way I mean that this time however, is because it uses FFmpeg, which if I'm correct, has quite the potential for violating patents (where patents apply, like the US), because they haven't paid a license for those technologies. Of course, I don't know if South Korea acknowledges patents, so it may only be a problem where patents are recognized.

[bastik]

1. I don't know what the license agreement says.

Quoting the LGPL:
13. The Free Software Foundation may publish revised and/or new
versions of the Lesser General Public License from time to time.
Such new versions will be similar in spirit to the present version,
but may differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the Library
specifies a version number of this License which applies to it and
"any later version", you have the option of following the terms and
conditions either of that version or of any later version published by
the Free Software Foundation. If the Library does not specify a
license version number, you may choose any version ever published by
the Free Software Foundation.

Well I don't have to care about that.

2. Maybe. If ffdshow (or any other component that is shipped with KMPlayer) violates copyrights or patents that are acknowledged in your country and a law exists that a end user is not allowed to use any software that uses libraries that violate those rights, then it's illegal there.