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IDProjectCategoryView StatusLast Update
0000703eac3tobugpublic2023-03-14 15:46
Reporteramiemie666 Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status closedResolutionno change required 
PlatformAMD R5 2660XOSWindows 10 Enterprise LTSC 2019  
Summary0000703: dialog normalization in AC3 tracks not fully detected
DescriptionIn the report generated by BDInfo, both audio tracks have dialog normalization.

But as you can see in the eac3to log, only DN in track 4 was successfully detected and removed.

It must be a bug for eac3to to get one and miss the other.

I only find the issue in this particular BD source 'The Falls-2012-LKMJ'.

[code]BDInfo report
AUDIO:
Codec Language Bitrate Description
--------------- ------------- ------------- -----------
Dolby Digital Audio English 448 kbps 5.1 / 48 kHz / 448 kbps / DN -31dB
Dolby Digital Audio English 192 kbps 2.0 / 48 kHz / 192 kbps / DN -27dB
[/code]

[code]eac3to Log
eac3to v3.36
command line: eac3to "The Falls-2012-LKMJ" 1) -demux
------------------------------------------------------------------------------
M2TS, 1 video track, 2 audio tracks, 1:31:15, 24p /1.001
1: Chapters, 10 chapters
2: h264/AVC, 1080p24 /1.001 (16:9)
3: AC3, English, 5.1 channels, 448kbps, 48kHz
4: AC3, English, 2.0 channels, 192kbps, 48kHz, dialnorm: -27dB
Creating file "00000 - Chapters.txt"...
[a03] Extracting audio track number 3...
[a04] Extracting audio track number 4...
[v02] Extracting video track number 2...
[a04] Removing AC3 dialog normalization...
[v02] Creating file "00000 - 2 - h264, 1080p24.h264"...
[a03] Creating file "00000 - 3 - AC3, English, 5.1 channels, 448kbps, 48kHz.ac3"...
[a04] Creating file "00000 - 4 - AC3, English, 2.0 channels, 192kbps, 48kHz.ac3"...
Video track 2 contains 131280 frames.
eac3to processing took 2 minutes, 40 seconds.
Done.
[/code]
Steps To ReproduceYou will have to get that BD source 'The Falls-2012-LKMJ' to reproduce.
TagsNo tags attached.
eac3to Version3.36

Activities

madshi

2023-03-13 14:59

administrator   ~0003006

Every AC3 stream has a dialnorm field, which can have a value between -1db and -31db. A value of -31db is "off". So eac3to is correct here. BDInfo just doesn't understand that -31db means "off".

amiemie666

2023-03-14 15:44

reporter   ~0003007

Thank you for the explanation.
And thank you for making wonderful tools like eac3to and madVR.

amiemie666

2023-03-14 15:46

reporter   ~0003008

Not a bug.

Issue History

Date Modified Username Field Change
2023-03-13 14:52 amiemie666 New Issue
2023-03-13 14:59 madshi Note Added: 0003006
2023-03-14 15:44 amiemie666 Note Added: 0003007
2023-03-14 15:46 amiemie666 Status new => closed
2023-03-14 15:46 amiemie666 Resolution open => no change required
2023-03-14 15:46 amiemie666 Note Added: 0003008