#10209: EBUR128 and LOUDNORM filters compute LRA differently
-------------------------------------+-------------------------------------
Reporter: hsn | Owner: (none)
Type: defect | Status: closed
Priority: normal | Component:
| undetermined
Version: 5.1.2 | Resolution: invalid
Keywords: LRA, | Blocked By:
ebur128 |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Zulianino):
i have same issue.
using ebur128 i have a measured integrated of -24.0
{{{
ffmpeg -i 20250724_094226_1fefa141_TEST_MIXSC2353_5FR_pre_ffmpeg.mxf
-hide_banner -af ebur128 -f null -
Integrated loudness:
I: -24.0 LUFS
Threshold: -34.5 LUFS
Loudness range:
LRA: 8.5 LU
Threshold: -44.0 LUFS
LRA low: -30.0 LUFS
LRA high: -21.5 LUFS
Sample peak:
Peak: -10.8 dBFS
}}}
while using loudnorm I have integrated of -24.85
{{{
ffmpeg -i 20250724_094226_1fefa141_TEST_MIXSC2353_5FR_pre_ffmpeg.mxf -af
loudnorm=print_format=json -f null -
{
"input_i" : "-24.59",
"input_tp" : "-10.82",
"input_lra" : "9.70",
"input_thresh" : "-35.23",
"output_i" : "-24.85",
"output_tp" : "-10.75",
"output_lra" : "6.30",
"output_thresh" : "-35.26",
"normalization_type" : "dynamic",
"target_offset" : "0.85"
}
}}}
using broadcast software to analyze the files, results are equal to
ebur128 filter
is someone able to check this?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10209#comment:11>
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