[FFmpeg-devel] [PATCH] avfilter: add loudnorm

[Clément Bœsch]

On Tue, Apr 05, 2016 at 07:01:14PM -0500, Kyle Swanson wrote:
> Here's another audio filter. I hinted at this a few months ago, but I found out that
> finishing the last 5% took almost as long as the first 95%. This is an EBU R128
> dynamic loudness normalization filter. This filter uses libebur128 v1.1.0[1] and must be
> configured with `--enable-libebur128'. Please also see the accompanying blog post[2]
> which has an algorithm description, as well as some usage instructions.
> 
> [1] https://github.com/jiixyj/libebur128
> [2] http://k.ylo.ph/2016/04/04/loudnorm.html
> 
> Thanks!
> Kyle
> 
> Signed-off-by: Kyle Swanson <k at ylo.ph>
> ---
>  Changelog                 |   1 +
>  MAINTAINERS               |   1 +
>  configure                 |   5 +
>  doc/filters.texi          |  42 +++
>  libavfilter/Makefile      |   1 +
>  libavfilter/af_loudnorm.c | 905 ++++++++++++++++++++++++++++++++++++++++++++++
>  libavfilter/allfilters.c  |   1 +
>  libavfilter/version.h     |   4 +-
>  8 files changed, 958 insertions(+), 2 deletions(-)
>  create mode 100644 libavfilter/af_loudnorm.c
> 

Mmh. That's nice and all but... why not use/adjust the native ebur128
filter we have instead of relying on an external library?

[...]

-- 
Clément B.
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