[FFmpeg-devel] [PATCH][WIP] avfilter: add libebur128 port

Kyle Swanson k at ylo.ph
Mon Jun 27 18:14:45 CEST 2016

On Sun, Jun 19, 2016 at 2:17 AM, Kyle Swanson <k at ylo.ph> wrote:
> Hi,
> af_loudnorm currently links libebur128. The port makes sense because
> libebur128 is tiny, MIT-licensed, has a good API, and would be useful
> in several filters. Perceptual loudness has become an important topic
> in broadcasting and audio in general, and it'd be nice to provide
> these filters to everybody without having to link an external library.
> FFmpeg already has some ebur128 logic in f_ebur128, which I was
> initially interested in breaking out into something reusable, but
> found libebur128 was better suited for this. This was discussed last
> month when the loudnorm filter was pushed, and also with the
> expectation that libebur128 would be ported to FFmpeg. Briefly,
> libebur128 allows several modes of measurement, custom channel
> mappings, doesn't require resampling the input stream, is faster, and
> has a reusable API.
> Thanks,
> Kyle


I'm still not clear if I should pursue this or not, I've received
`yes` and `no` from both sides on this issue.


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