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2nd October 2019, 10:17 | #1 | Link |
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Is DN -27dB on eac3to the same as DN -4dB on BDinfo?
Hi, all!
I’ve found many BDremux (only .mkv) in which DN (Dialog Normalization) is -27dB when I fed eac3to with them, but if I go to caps-a-holic, BDinfo shows -4dB. So, I suppose those .mkv files were modified. For example, "The dark knight rises": https://caps-a-holic.com/c.php?d1=11867&d2=11866&c=4674 As you can see on US Bluray, french, spanish and portuguese audios shows DN -4dB: Code:
AUDIO: Codec Language Bitrate Description ----- -------- ------- ----------- DTS-HD Master Audio English 4018 kbps 5.1 / 48 kHz / 4018 kbps / 24-bit (DTS Core: 5.1 / 48 kHz / 1509 kbps / 24-bit) Dolby Digital Audio English 192 kbps 2.0 / 48 kHz / 192 kbps / DN -4dB / Dolby Surround Dolby Digital Audio French 448 kbps 5.1 / 48 kHz / 448 kbps / DN -4dB Dolby Digital Audio Spanish 448 kbps 5.1 / 48 kHz / 448 kbps / DN -4dB Dolby Digital Audio Portuguese 448 kbps 5.1 / 48 kHz / 448 kbps / DN -4dB I’ve found a BDRemux of "Wild at heart": https://caps-a-holic.com/c.php?d1=4163&d2=12255&c=817 Code:
AUDIO: Codec Language Bitrate Description ----- -------- ------- ----------- DTS-HD Master Audio English 4102 kbps 5.1 / 48 kHz / 4102 kbps / 24-bit (DTS Core: 5.1 / 48 kHz / 1509 kbps / 24-bit / DN -4dB) DTS-HD Master Audio English 2104 kbps 2.0 / 48 kHz / 2104 kbps / 24-bit (DTS Core: 2.0 / 48 kHz / 1509 kbps / 24-bit / DN -6dB) DTS-HD Master Audio Spanish 1075 kbps 1.0 / 48 kHz / 1075 kbps / 24-bit (DTS Core: 1.0 / 48 kHz / 768 kbps / 24-bit / DN -1dB) DTS-HD Master Audio English 2066 kbps 2.0 / 48 kHz / 2066 kbps / 24-bit (DTS Core: 2.0 / 48 kHz / 1509 kbps / 24-bit / DN -6dB) |
2nd October 2019, 22:17 | #2 | Link |
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Both are values stored in headers of AC3 and DTS streams.
In DolbyDigital (AC3) streams docs: Dialogue Normalization This 5-bit code indicates how far the average dialogue level is below digital 100 percent. Valid values are 1–31. The value of 0 is reserved. The values of 1 to 31 are interpreted as -1 dB to -31 dB with respect to digital 100 percent. Then with a AC3 DN of -27 the signal must be scaled in -4 dB (-31 - (-27)) In DTS docs: Dialog Normalisation Parameter The dialog normalization gain (DNG), in dB, is specified by the encoder operator and is used to directly scale the decoder outputs samples Show directly the attenuation needed (-4 dB) instead the relative value to -31 in AC3.
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4th October 2019, 17:53 | #3 | Link |
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Thanks a lot, tebasuna. I don't know if I got it right…
with DTS: when BDinfo shows -4dB, eac3to shows -4dB with Dolby Digital: when BDinfo shows -4dB, eac3to shows -27d But, żalways? I used BDinfo to scan a FullBluray rip of Terminator 2 and here is the result: Code:
Codec Language Bitrate Description ----- -------- ------- ----------- DTS-HD Master Audio English 0 kbps 5.1-ES / 48 kHz / 24-bit (DTS Core: 5.1-ES / 48 kHz / 1509 kbps / 24-bit) DTS-HD High-Res Audio Italian 2304 kbps 5.1 / 48 kHz / 2304 kbps / 24-bit (DTS Core: 5.1 / 48 kHz / 1509 kbps / 24-bit) DTS-HD High-Res Audio Spanish 2304 kbps 5.1 / 48 kHz / 2304 kbps / 24-bit (DTS Core: 5.1 / 48 kHz / 1509 kbps / 24-bit) Dolby Digital Audio Spanish 224 kbps 2.0 / 48 kHz / 224 kbps / DN -27dB DTS Audio Portuguese 768 kbps 5.1 / 48 kHz / 768 kbps / 24-bit Dolby Digital Audio English 224 kbps 2.0 / 48 kHz / 224 kbps / DN -27dB Dolby Digital Audio English 224 kbps 2.0 / 48 kHz / 224 kbps / DN -27dB / Dolby Surround Dolby Digital Audio English 224 kbps 2.0 / 48 kHz / 224 kbps / DN -27dB * DTS Express English 192 kbps 2.0 / 48 kHz / 192 kbps / 24-bit * DTS Express English 192 kbps 2.0 / 48 kHz / 192 kbps / 24-bit By the way, BDinfo and eac3to specifies DN, is there any alternative software? Last edited by maldon; 4th October 2019 at 18:06. |
5th October 2019, 02:03 | #4 | Link | |||
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Quote:
Quote:
In ac3 eac3to put 31 in the header field and in dts put 0, the meaning of both values is no attenuation. Quote:
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10th October 2019, 15:14 | #5 | Link |
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Thank you very much, tebasuna51.
By the way, all the original Blu-rays (with DTS and/or Dolby Digital must contain without exception Dialog Normalization? For example, "Death Proof" on caps-a-holic: Code:
Name: 00007.MPLS Length: 1:53:36.859 (h:m:s.ms) Size: 29,754,335,232 bytes Total Bitrate: 34.92 Mbps VIDEO: Codec Bitrate Description ----- ------- ----------- MPEG-4 AVC Video 25879 kbps 1080p / 23.976 fps / 16:9 / High Profile 4.1 AUDIO: Codec Language Bitrate Description ----- -------- ------- ----------- Dolby TrueHD Audio English 3073 kbps 5.1 / 48 kHz / 3073 kbps / 24-bit (AC3 Embedded: 5.1 / 48 kHz / 640 kbps / 24-bit) Dolby Digital Audio English 640 kbps 5.1 / 48 kHz / 640 kbps Dolby Digital Audio French 640 kbps 5.1 / 48 kHz / 640 kbps Dolby Digital Audio Spanish 640 kbps 5.1 / 48 kHz / 640 kbps Dolby Digital Audio Italian 640 kbps 5.1 / 48 kHz / 640 kbps Code:
Dolby TrueHD Audio English 3073 kbps 5.1 / 48 kHz / 3073 kbps / 24-bit (AC3 Core: 5.1 / 48 kHz / 640 kbps) Dolby Digital Audio English 640 kbps 5.1 / 48 kHz / 640 kbps Dolby Digital Audio French 640 kbps 5.1 / 48 kHz / 640 kbps Dolby Digital Audio Italian 640 kbps 5.1 / 48 kHz / 640 kbps Dolby Digital Audio Spanish 640 kbps 5.1 / 48 kHz / 640 kbps Code:
Playlist: 00007.MPLS Size: 29,754,335,232 bytes Length: 1:53:36 Total Bitrate: 34.92 Mbps Video: MPEG-4 AVC Video / 25879 kbps / 1080p / 23.976 fps / 16:9 / High Profile 4.1 Audio: English / Dolby TrueHD Audio / 5.1 / 48 kHz / 3073 kbps / 24-bit (AC3 Embedded: 5.1 / 48 kHz / 640 kbps / DN -4dB) Audio: English / Dolby Digital Audio / 5.1 / 48 kHz / 640 kbps / DN -4dB Audio: French / Dolby Digital Audio / 5.1 / 48 kHz / 640 kbps / DN -4dB Audio: Italian / Dolby Digital Audio / 5.1 / 48 kHz / 640 kbps / DN -4dB Audio: Spanish / Dolby Digital Audio / 5.1 / 48 kHz / 640 kbps / DN -4dB |
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