[FFmpeg-devel] [PATCH] configure: Change license required for NewTek SDK

[Tomas Härdin]

On 2018-02-14 14:48, Ricardo Constantino wrote:
> On 14 February 2018 at 12:56, Tomas Härdin <tjoppen at acc.umu.se> wrote:
>
>> On 2018-02-14 13:50, Kyle Schwarz wrote:
>>
>>> On Wed, Feb 14, 2018 at 7:45 AM, Hendrik Leppkes <h.leppkes at gmail.com>
>>> wrote:
>>>
>>>> On Wed, Feb 14, 2018 at 1:32 PM, Kyle Schwarz <zeranoe at gmail.com> wrote:
>>>>
>>>>> On Wed, Feb 14, 2018 at 7:20 AM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> 2018-02-14 13:12 GMT+01:00 Kyle Schwarz <zeranoe at gmail.com>:
>>>>>>
>>>>>>> On Wed, Feb 14, 2018 at 6:54 AM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> 2018-02-14 12:21 GMT+01:00 Kyle Schwarz <zeranoe at gmail.com>:
>>>>>>>> Sorry, I wasn't immediately able to find the sources for the
>>>>>>>> ndi library: Please post a link.
>>>>>>>>
>>>>>>> The only official way I know to get the SDK is by providing them with
>>>>>>> an email when selecting "Download": https://www.newtek.com/ndi/sdk/
>>>>>>>
>>>>>> Do you have the sources that allow to build the library "ndi" (that
>>>>>> FFmpeg links against), to change it and redistribute it?
>>>>>>
>>>>> No, the library comes pre built in the SDK.
>>>>>
>>>> If you need to link against a proprietary binary, then the resulting
>>>> binary is no longer GPL compatible, and as such non-free, no matter
>>>> the license of the headers.
>>>>
>>> Good to know, thanks for clearing this up. Sounds like NewTek might be
>>> a little confused about this:
>>> https://ffmpeg.zeranoe.com/forum/viewtopic.php?f=42&p=13238#p13238
>>>
>> This applies only to the CLI. The libraries are LGPL, so things may be
>> different there depending on how things are packaged/linked. The LGPL
>> permits distributing proprietary object files such that a functioning
>> library may be linked together. See https://www.gnu.org/licenses/g
>> pl-faq.en.html#LGPLStaticVsDynamic
>>
>>
> The SDK license agreement also mentions that it's unredistributable.
> Doesn't that make it as nonfree as decklink's?

Oh yeah, that puts a damper on things. The only way around that is 
dlopen() or RPC, neither of which is going to make it into FFmpeg

/Tomas