Select provider of libav* libraries

Andreas Cadhalpun andreas.cadhalpun at
Mon Jun 1 15:51:43 UTC 2015

Hi Sebastian,

On 01.06.2015 17:29, Sebastian Ramacher wrote:
> On 2015-06-01 16:59:13, Andreas Cadhalpun wrote:
>> If you tell me where and how, I can put my arguments on a wiki page.
> I've created [1]. [2] and [3] can be used to list arguments for libav
> respectively ffmpeg.
> [1]
> [2]
> [3]

I'll try to fill the ffmpeg page at:

>>> Will ffmpeg build the LGPL and GPL variants as libav did or are all reverse
>>> dependencies suddenly compatible with the GPL variant?
>> Currently Libav only builds GPL-2+ and with libavcodec-extra* GPL-3+
>> libraries.
> Ah yes, got that mixed up.
>> Since the only additional functionality of the extra variant is limited
>> to an AMR encoder [3]. Thus I don't think this justifies the additional
>> complexity of the extra variant.
> But it'd be a regression. Is there any data on how many people use that encoder?

I don't have any data beyond the popularity contest [4]:
libavcodec56            49010
libavcodec-extra-56     1628

That's about 3%, though I doubt that all who have libavcodec-extra-56 installed
actually need it. (I used to install it because the named implied it might be useful.)

Best regards,


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