Audio tracks report wrong length

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minilo
Posts: 1
Joined: Mon Sep 30, 2024 5:48 pm

Audio tracks report wrong length

#1 Post by minilo » Mon Sep 30, 2024 6:30 pm

I backed the "The Great Gatsby" BluRay up.
The drive was "Verbatim 43888"

When looking into the media files many have a wrong length

T10:

Code: Select all

General
Unique ID                                : Unique
Complete name                            : The Great Gatsby_t10.mkv
Format                                   : Matroska
Format version                           : Version 2
File size                                : 932 MiB
Duration                                 : 14 min 12 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 9 165 kb/s
Frame rate                               : 23.976 FPS
Movie name                               : The Great Gatsby
Encoded date                             : 2024-09-29 19:00:44 UTC
Writing application                      : MakeMKV v1.17.7 linux(x64-release)
Writing library                          : libmakemkv v1.17.7 (1.3.10/1.5.2) x86_64-linux-gnu

Video
ID                                       : 1
ID in the original source medium         : 4113 (0x1011)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings                          : CABAC / 2 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 2 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 9 min 14 s
Bit rate mode                            : Variable
Bit rate                                 : 13.7 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.276
Time code of first frame                 : 00:59:58:00
Stream size                              : 909 MiB (98%)
Language                                 : English
Default                                  : No
Forced                                   : No
Original source medium                   : Blu-ray

Audio
ID                                       : 2
ID in the original source medium         : 4352 (0x1100)
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Commercial name                          : Dolby Digital
Format settings                          : Dolby Surround
Codec ID                                 : A_AC3
Duration                                 : 14 min 12 s
Bit rate mode                            : Constant
Bit rate                                 : 192 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Stream size                              : 14.9 MiB (2%)
Title                                    : Stereo
Language                                 : English
Service kind                             : Complete Main
Default                                  : Yes
Forced                                   : No
Original source medium                   : Blu-ray
Dialog Normalization                     : -27 dB
dsurmod                                  : Dolby Surround encoded
dialnorm_Average                         : -27 dB
dialnorm_Minimum                         : -27 dB
dialnorm_Maximum                         : -27 dB

Text #1
ID                                       : 3
ID in the original source medium         : 4608 (0x1200)
Format                                   : PGS
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 9 min 8 s
Bit rate                                 : 62.9 kb/s
Frame rate                               : 0.619 FPS
Count of elements                        : 340
Stream size                              : 4.11 MiB (0%)
Language                                 : English
Default                                  : No
Forced                                   : No
Original source medium                   : Blu-ray

Text #2
ID                                       : 5
ID in the original source medium         : 4609 (0x1201)
Format                                   : PGS
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 9 min 8 s
Bit rate                                 : 57.6 kb/s
Frame rate                               : 0.623 FPS
Count of elements                        : 342
Stream size                              : 3.77 MiB (0%)
Language                                 : German
Default                                  : No
Forced                                   : No
Original source medium                   : Blu-ray

Wrong length is 14:12.
Correct one is 09:08.

T06:

Code: Select all

General
Unique ID                                : Unique
Complete name                            : The Great Gatsby_t06.mkv
Format                                   : Matroska
Format version                           : Version 2
File size                                : 724 MiB
Duration                                 : 12 min 9 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 8 322 kb/s
Frame rate                               : 23.976 FPS
Movie name                               : The Great Gatsby
Encoded date                             : 2024-09-29 18:54:58 UTC
Writing application                      : MakeMKV v1.17.7 linux(x64-release)
Writing library                          : libmakemkv v1.17.7 (1.3.10/1.5.2) x86_64-linux-gnu

Video
ID                                       : 1
ID in the original source medium         : 4113 (0x1011)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings                          : CABAC / 2 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 2 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 7 min 12 s
Bit rate mode                            : Variable
Bit rate                                 : 13.7 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.276
Time code of first frame                 : 00:59:58:00
Stream size                              : 706 MiB (98%)
Language                                 : English
Default                                  : No
Forced                                   : No
Original source medium                   : Blu-ray

Audio
ID                                       : 2
ID in the original source medium         : 4352 (0x1100)
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Commercial name                          : Dolby Digital
Format settings                          : Dolby Surround
Codec ID                                 : A_AC3
Duration                                 : 12 min 9 s
Bit rate mode                            : Constant
Bit rate                                 : 192 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Stream size                              : 12.1 MiB (2%)
Title                                    : Stereo
Language                                 : English
Service kind                             : Complete Main
Default                                  : Yes
Forced                                   : No
Original source medium                   : Blu-ray
Dialog Normalization                     : -27 dB
dsurmod                                  : Dolby Surround encoded
dialnorm_Average                         : -27 dB
dialnorm_Minimum                         : -27 dB
dialnorm_Maximum                         : -27 dB

Text #1
ID                                       : 3
ID in the original source medium         : 4608 (0x1200)
Format                                   : PGS
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 7 min 5 s
Bit rate                                 : 56.7 kb/s
Frame rate                               : 0.563 FPS
Count of elements                        : 240
Stream size                              : 2.88 MiB (0%)
Language                                 : English
Default                                  : No
Forced                                   : No
Original source medium                   : Blu-ray

Text #2
ID                                       : 5
ID in the original source medium         : 4609 (0x1201)
Format                                   : PGS
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 7 min 5 s
Bit rate                                 : 54.5 kb/s
Frame rate                               : 0.568 FPS
Count of elements                        : 242
Stream size                              : 2.77 MiB (0%)
Language                                 : German
Default                                  : No
Forced                                   : No
Original source medium                   : Blu-ray

Wrong is 12:09
Correct would be 7:05


The wrong length is only with Dolby Surround or Dolby Digital tracks.

Is this a known bug with Dolby Surround / Digial tracks?

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