MeGUI / Bugs / #870 E-AC3 extract

kenny_powers - 2017-01-16

Note this is only for E-AC3 with core which seems be used on some discs now for extra dubs. Normal E-AC3 I believe works fine (don't have anything to test with).

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Zathor - 2017-03-26

Thanks, it will be fixed in 2709.

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Zathor - 2017-03-26

status: open --> pending
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Tebasuna - 2017-03-27

The command:
eac3to input.eac3 output.ac3 -core
does not encode the full E-AC3, only recode the core to 640 Kb/s, then is useless.

Even ffmpeg can't decode this kind of eac3, only decode the 5.1 core.
The warning message is:
Dependent substream decoding is not implemented.

BTW this problem is only with E-AC3 streams with core, the E-AC3 reported by eac3to without core, work fine.

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Zathor - 2017-03-27

Mhm, as I had only a E-AC3 EX stream with core with had that problem in 2709 all E-AC3 EX streams are converted with .ac3 -core
Do you have a sample without core?

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Tebasuna - 2017-03-27

I make a sample with both streams.

I can't upload here, then https://www.sendspace.com/file/jzq7ec

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kenny_powers - 2017-03-28

ah yes, eac3to input.eac3 output.ac3 -core really just upscales the core to 640k if it's under it (e.g core 448k to 640k).
The eac3to input.eac3 output.eac3 option was not implamented correctly on the new version. It's missing the -core part which aborts the demux:

eac3to.exe" "E:\" 1) 4:"D:\MOVIE_F1_T4_Audio - Portuguese.eac3" -progressnumbers [a04] Extracting audio track number 4... [a04] Removing AC3 dialog normalization... [a04] Applying (E-)AC3 delay failed. <ERROR> Aborted at file position 1349276. <ERROR>

it needs to be (will extract the E-AC3 as is):
eac3to.exe" "E:\" 1) 4:"D:\MOVIE_F1_T4_Audio - Portuguese.eac3" -core

Last edit: kenny_powers 2017-03-28
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kenny_powers - 2017-03-28

By the way, TSMuxer is able to extract the E-AC3 7.1, it does it to .ac3. However mediainfo reports it's only 5.1 and file extension is wrong:

FileExtension_Invalid : dd+ ec3 eac3 Bit rate : 500 b/s Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE

eac3to sees the extracted file differently:

E-AC3, 7.1 channels, 1:26:27, 768kbps, 48kHz, dialnorm: -27dB (core: AC3, 5.1 channels, 1:26:27, 448kbps, 48kHz, dialnorm: -27dB)

Last edit: kenny_powers 2017-03-28
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Zathor - 2017-05-07

status: pending --> closed-fixed
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Zathor - 2017-05-07

Fixed since 2710

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Stéphane Bocquet - 2018-11-06

Hi,

I'm facing this problem with multiple BR with Dolby Digital Plus tracks.
If the french (or german) track is extracted with the EAC3_CORE option, this works fine, but I'm unable to extract it with all the 7.1 channels.

Here is the log with HD Stream Extractor:

[Error] [06/11/2018 10:07:08] Standard output stream
-[Information] [06/11/2018 10:07:10] M2TS, 1 video track, 5 audio tracks, 15 subtitle tracks, 2:29:21, 24p /1.001
-[Information] [06/11/2018 10:07:10] 1: Chapters, 20 chapters
-[Information] [06/11/2018 10:07:10] 2: h264/AVC, 1080p24 /1.001 (16:9)
-[Information] [06/11/2018 10:07:10] 3: DTS Master Audio, English, 7.1 channels, 24 bits, 48kHz
-[Information] [06/11/2018 10:07:10] (core: DTS, 5.1 channels, 1509kbps, 48kHz)
-[Information] [06/11/2018 10:07:10] 4: AC3, English, 2.0 channels, 320kbps, 48kHz, dialnorm: -28dB
-[Information] [06/11/2018 10:07:10] 5: E-AC3, French, 7.1 channels, 896kbps, 48kHz, dialnorm: -29dB
-[Information] [06/11/2018 10:07:10] (core: AC3, 5.1 channels, 512kbps, 48kHz, dialnorm: -29dB)
-[Information] [06/11/2018 10:07:10] 6: E-AC3, German, 7.1 channels, 896kbps, 48kHz, dialnorm: -29dB
-[Information] [06/11/2018 10:07:10] (core: AC3, 5.1 channels, 512kbps, 48kHz, dialnorm: -29dB)
-[Information] [06/11/2018 10:07:10] 7: AC3, English, 2.0 channels, 192kbps, 48kHz, dialnorm: -27dB
-[Information] [06/11/2018 10:07:10] 8: Subtitle (PGS), English
-[Information] [06/11/2018 10:07:10] 9: Subtitle (PGS), French
-[Information] [06/11/2018 10:07:10] 10: Subtitle (PGS), German
-[Information] [06/11/2018 10:07:10] 11: Subtitle (PGS), Danish
-[Information] [06/11/2018 10:07:10] 12: Subtitle (PGS), Dutch
-[Information] [06/11/2018 10:07:10] 13: Subtitle (PGS), Finnish
-[Information] [06/11/2018 10:07:10] 14: Subtitle (PGS), Norwegian
-[Information] [06/11/2018 10:07:10] 15: Subtitle (PGS), Swedish
-[Information] [06/11/2018 10:07:10] 16: Subtitle (PGS), English
-[Information] [06/11/2018 10:07:10] 17: Subtitle (PGS), French
-[Information] [06/11/2018 10:07:10] 18: Subtitle (PGS), German
-[Information] [06/11/2018 10:07:10] 19: Subtitle (PGS), Dutch
-[Information] [06/11/2018 10:07:10] 20: Subtitle (PGS), English
-[Information] [06/11/2018 10:07:10] 21: Subtitle (PGS), French
-[Information] [06/11/2018 10:07:10] 22: Subtitle (PGS), German
-[Information] [06/11/2018 10:07:10] a05 Extracting audio track number 5...
-[Information] [06/11/2018 10:07:10] a05 Removing AC3 dialog normalization...
-[Information] [06/11/2018 10:07:10] Applying (E-)AC3 delay failed.a05
-[Information] [06/11/2018 10:07:10] Aborted at file position 1048576.
-[Error] [06/11/2018 10:07:10] [a05] Applying (E-)AC3 delay failed. <error>
-[Error] [06/11/2018 10:07:10] Aborted at file position 1048576. <error></error></error>

Any suggestion to extract those E-AC3 streams ?

Thx

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Tebasuna - 2018-11-09

Stéphane Bocquet
There are a workaround to extract the full EAC3 stream.
Add in +Options (Settings -> Enable Custom Options) the parameter -keepDialnorm

Seems the abort occurs when try:
-[Information] [06/11/2018 10:07:10] a05 Removing AC3 dialog normalization...

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Stéphane Bocquet - 2018-11-09

Hi Tebasuna,

Thanks a lot for the info, but I'm searching the place to add this option (Can't find Setting => Enable Custom Options). Can you please provide me more info so I can try this.

Have a nice day

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Tebasuna - 2018-11-09

MeGUI (v2888) -> Tools -> HD Stream Extractor -> Settings (in upper-left corner) -> Enable Custom Options

that add a '+Options' column for each track.

But I think that is already solved in v2881:

2881 [HD Streams Extractor] force "-keepDialnorm" if required for a E-AC3 tracks

Please use:

MeGUI -> Options -> Settings -> Extra Configuration -> Auto Update -> Use development update server

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Stéphane Bocquet - 2018-11-09

Thanks Tebasuna ;) The extraction works fine now with this option.

So, I've just made another test and my 7.1 DD+ track is still extracted with only 6 channels. haven't tested it with my receiver, but that what mediainfo is reporting me. Is mediainfo false or am I missing something ?

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kenny_powers - 2018-11-10

Is there a way to extract the 2 compoanants together (eac3 and the core) like is possible with truehd (audio.thd+ac3) ?

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Tebasuna - 2018-11-10

Works fine for me:

Job command line: "D:\Programa\megui\tools\eac3to\eac3to.exe" "D:\BD\" 1) 5:"D:\BD\F1_T5_Audio - Spanish.eac3" -keepDialnorm -progressnumbers

M2TS, 1 video track, 7 audio tracks, 21 subtitle tracks, 1:53:40, 24p /1.001
1: Chapters, 20 chapters
...
5: E-AC3, Spanish, 7.1 channels, 768kbps, 48kHz, dialnorm: -27dB
(core: AC3, 5.1 channels, 448kbps, 48kHz, dialnorm: -27dB)
...

The extracted EAC3 (eac3to):
E-AC3, 7.1 channels, 1:53:40, 768kbps, 48kHz, dialnorm: -27dB
(core: AC3, 5.1 channels, 1:53:40, 448kbps, 48kHz, dialnorm: -27dB)

MediaInfo v18.08 (use a recent version):
Channel(s) : 8 channels
Channel layout : L R C LFE Ls Rs Lb Rb

@kenny_powers
There are only one stream, like with DTS-HD you can extract the full stream or the core.
It is not like thd+ac3 with two streams interleaved.

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kenny_powers - 2018-11-11

ahh I didn't realize that! thought being from the dd family it's similar to TrueHD. thanks Tebasuna !

Is there also way to transcode an AC3 5.1 using the full eac3?
Currently, I'm only aware of a way to get the core out as is:

eac3to original.eac3 audio.eac3 -core

or upscale from core to auto 640kbps (as core is usually under 640):

eac3to original.eac3 audio.ac3 -core

or

eac3to original.eac3 audio.ac3 -keepDialnorm

Last edit: kenny_powers 2018-11-11

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Tebasuna - 2018-11-11

With this kind of eac3:
E-AC3, 7.1 channels, 0:01:23, 768kbps, 48kHz, dialnorm: -27dB
(core: AC3, 5.1 channels, 0:01:23, 448kbps, 48kHz, dialnorm: -27dB)

eac3to orig71.eac3 audio.eac3 -> abort
eac3to orig71.eac3 audio.eac3 -keepDialnorm -> The same .eac3 (to extract the full eac3)
eac3to orig71.eac3 audio.eac3 -core -> extract the AC3 core with .eac3 extension (modify after)
eac3to orig71.eac3 audio.ac3 [any par] -> recode the core to AC3 wih libAften (useless)

But there are another eac3 files:
E-AC3, 5.1 channels, 0:01:23, 640kbps, 48kHz

eac3to orig51.eac3 audio.eac3 [any par] -> The same .eac3
eac3to orig51.eac3 audio.ac3 [any par] -> Recoded to AC3 with libAften (not recommended, use ffmpeg)

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Stéphane Bocquet - 2018-11-12

Hi Tebasuna !

Just tested the -keepDialnorm option with my receiver and the 7.1 DD+ stream works fine. My previous version of mediainfo was just a bit old...

Thanks a lot for the help.
Have a nice day.

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Zathor - 2018-11-12

discussion: enabled --> disabled
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Zathor - 2018-11-12

Thanks to all and especially to Tebasuna.

I do have to close here completly as you do discuss in an already closed ticket. Feel free to create a new ticket if you encounter any further issue.

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E-AC3 extract

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#870 E-AC3 extract

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