[FFmpeg-devel] [PATCH] lavfi/af_ebur128: update filter to use new ebur128 API

Michael Niedermayer michael at niedermayer.cc
Fri Nov 18 02:55:16 EET 2016

On Thu, Nov 17, 2016 at 11:04:46AM -0600, Kyle Swanson wrote:
> Hi,
> Here's a couple of patches which update the ebur128 filter to use the
> recently added ebur128 API. This updated filter allows fine-tuned
> control over which EBU R128 parameters are measured, and provides
> modest speed increases over the previous ebur128 filter. Also
> noteworthy: this removes the video output option of the ebur128
> filter. This is extraneous for an ebur128 measurement filter IMHO, but
> if we wanted to keep similar functionality in FFmpeg, we'd be better
> served by a new video source filter where custom meters could be
> created via exported frame metadata.
> The first patch adds true peak functionality to the ebur128 API using
> swresample (this was already discussed a little bit:
> http://ffmpeg.org/pipermail/ffmpeg-devel/2016-November/202583.html)
> The second patch is an update to the ebur128 filter.
> Kyle

src/libavfilter/af_ebur128.c: In function ‘write_strings’:
src/libavfilter/af_ebur128.c:121:9: error: variable length array ‘sample_peak’ is used [-Werror=vla]
src/libavfilter/af_ebur128.c:133:9: error: variable length array ‘true_peak’ is used [-Werror=vla]

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

If you think the mosad wants you dead since a long time then you are either
wrong or dead since a long time.
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