25 Feb
2016
25 Feb
'16
8:01 a.m.
Oups,
I did not follow the evolution...
I'm using it on Ubuntu 14.04 and Win7. But I think I'm a bad user, I'm
only using the power of jpeg2000 conversion.
For audio I do it manually.
I thought this filter was present in ffmpeg since a long time.
Lilian
Le 24/02/2016 02:13, Carl Hetherington via DCPomatic a écrit :
Hi Lilian,
This analysis (using FFmpeg's filter) is already in the testing version of
DoM, although currently only on some platforms as it requires a small
patch to FFmpeg. Remind me: what OS are you running DoM on?
Regards,
Carl
On Mon, 22 Feb 2016, lilian lefranc via DCPomatic wrote:
Hi all,
Has somebody any experience with loudness audio normalisation?
I personally use it in case of BD / DVD authoring to normalise all the
sounds.
It seems to be the most recent for broadcasting, as the mean audio level
does not analyse the audio frequency spectrum.
Loudness seems to be the closest to the human response.
ffmpeg has this filter: (https://ffmpeg.org/ffmpeg-filters.html#ebur128-1)
ffmpeg -nostats -i input -filter_complex ebur128 -f null -
"I" gives the value of the integrated loudness. The optimal value for
broadcasting seems to be -23 LUFS.
This filter does not give any indication of the peak, so the classic
analyse would be necessary to avoid saturation.
Anyone thinks that this analyse could be useful for DoM?
Lilian
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