[FFmpeg-trac] #7813(avfilter:new): ebur128 filter reports sample peak > 0 dBFS

FFmpeg trac at avcodec.org
Fri Mar 29 00:56:40 EET 2019

#7813: ebur128 filter reports sample peak > 0 dBFS
             Reporter:  ahthovaikied  |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avfilter
              Version:  unspecified   |               Resolution:
             Keywords:                |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |

Comment (by cus):

 Well, the filter can only measure what is passed through it, and the
 filter only supports 48 kHz and double sample format so it works as it

 You can either
 - make this ticket an enhancment request to add support for 44100 Hz and
 non-double sample format to ebur128 filter OR
 - resample manually to 48 kHz first using a fixed point sample format
 before invoking the ebur128 filter: `ffmpeg -i 3_45.flac -af
 aresample=48000,aformat=sample_fmts=s16,ebur128=peak=sample -f null

Ticket URL: <https://trac.ffmpeg.org/ticket/7813#comment:6>
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