Support forum for DG Tools

Posted: **Fri Mar 24, 2023 11:10 am**

I've seen this on a number of discs now. The most recent ones are:

https://www.amazon.co.uk/On-the-Run-Blu ... B09YRK8N4L
https://www.amazon.co.jp/KihachirA-Kawa ... B09MJ74TH1

(I'm sorry that they are not exactly mainstream releases, but stereo LPCM isn't very common. Seems like most studios prefer DTS-MA for older mono or stereo films these days.)

Anyway, the problem:

The LPCM 2.0 audio tracks show up in DGDemuxGUI as "PCM RES RES RES [lang]" instead of showing the actual bitrate, sample rate, and channel count. When demuxed, the resulting .w64 file has bizarre values for those specs when checked in MediaInfo or ffmpeg:

Code: Select all

General
Complete name                            : E:\MMYY PID 1100 zho DELAY 0ms.w64
Format                                   : Wave64
File size                                : 1.44 GiB
Duration                                 : 7 s 793 ms
Overall bit rate mode                    : Constant
Overall bit rate                         : 1 585 Mb/s

Audio
Format                                   : PCM
Format settings                          : Little / Signed
Codec ID                                 : 1
[b]Duration                                 : 7 s 793 ms[/b]
Bit rate mode                            : Constant
Bit rate                                 : 1 585 Mb/s
[b]Channel(s)                               : 35 840 channels
Sampling rate                            : 2 152 MHz
Bit depth                                : 102 bits[/b]
Stream size                              : 1.44 GiB (100%)

ReportBy                                 : MediaInfoLib - v22.12

Demuxing the same track with eac3to v3.34 yields a normal PCM .WAV file with the correct values (in this specific case it also strips 8 bits of padding because the audio is actually only 16-bit, but the same thing happens with "real" 24-bit too):

Code: Select all

General
Complete name                            : E:\MMYY.wav
Format                                   : Wave
File size                                : 982 MiB
Duration                                 : 1 h 29 min
Overall bit rate mode                    : Constant
Overall bit rate                         : 1 536 kb/s

Audio
Format                                   : PCM
Format settings                          : Little / Signed
Codec ID                                 : 00000001-0000-0010-8000-00AA00389B71
[b]Duration                                 : 1 h 29 min[/b]
Bit rate mode                            : Constant
Bit rate                                 : 1 536 kb/s
[b]Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz[/b]
Bit depth                                : 16 bits
Stream size                              : 982 MiB (100%)

ReportBy                                 : MediaInfoLib - v22.12

If you want me to do more testing before you consider ordering one of these discs, please advise.

Posted: **Fri Mar 24, 2023 3:29 pm**

Thank you for your report. I have ordered the first disk. It may be some time before it is delivered so please be patient.

Posted: **Fri Mar 24, 2023 3:38 pm**

No problem, and thank you for looking into it.

Posted: **Fri Mar 24, 2023 7:39 pm**

Rocky forgot to say: Welcome to the forum!

Posted: **Fri Mar 24, 2023 9:26 pm**

My bad.

Posted: **Sat Mar 25, 2023 10:45 am**

Sherman wrote: ↑
Fri Mar 24, 2023 7:39 pm
Rocky forgot to say: Welcome to the forum!

Posted: **Sat Mar 25, 2023 12:20 pm**

A real man! Slide into my PMs.

Posted: **Tue Mar 28, 2023 9:00 pm**

Posted: **Tue Mar 28, 2023 9:13 pm**

Posted: **Tue Mar 28, 2023 9:28 pm**

Posted: **Tue Mar 28, 2023 10:16 pm**

Posted: **Sat Apr 01, 2023 1:48 pm**

Disk scheduled for arrival tomorrow.

Posted: **Sun Apr 02, 2023 9:16 am**

Superb! Faster than I expected.

Posted: **Mon Apr 03, 2023 7:59 am**

Yeah, well, that's because I misread the tracking info and mistook May for April. Actual window is April 6 to May 2.

Posted: **Mon Apr 03, 2023 12:14 pm**

We forgive you, Rocky.

Posted: **Mon Apr 10, 2023 7:14 pm**

Disk is in hand. Ripping now...

Posted: **Mon Apr 10, 2023 8:46 pm**

OK, I understand the problem. Now how to fix it?

It's actually a regression of the fix made for this issue:

https://www.rationalqm.us/board/viewtop ... =16&t=1214

Posted: **Mon Apr 10, 2023 9:25 pm**

Please test this fix. Just update DGDemux.exe from this:

https://rationalqm.us/misc/DGDemux_lpcm.rar

Posted: **Tue Apr 11, 2023 9:13 am**

I went ahead and released fixes for DGDemux/DGDemuxGUI and DGDecNV. Marking resolved.

Posted: **Wed Apr 12, 2023 8:52 am**

Sorry for being slow to respond; I was away for a few days.

In any case, thank you for jumping on this so quickly. I'll grab the updated version and try it out today.

Posted: **Wed Apr 12, 2023 9:20 am**

Looks good!

I'm mildly surprised that I didn't notice it being a regression, but discs like this are uncommon enough that maybe I'd never run into one before that point while using DGDemux (to notice that it once had worked).

In any case, thank you again!

Posted: **Wed Apr 12, 2023 11:03 am**

You're welcome and thank you for your update. I think it was actually broken for all PCM streams, and not just this exotic flavor. Definitely that is the case when only PCM is present. If other audio types were also present, then it depended on the order of their first appearance in the stream. Whatever, it's good to have this fixed.

Posted: **Thu Apr 13, 2023 7:27 pm**

Rocky kicked butt on this. Where's Sherman?

Posted: **Thu Apr 13, 2023 7:28 pm**

Right here:

Posted: **Thu Apr 13, 2023 7:33 pm**

Give it up, Sherman. She hit the wall.

Support forum for DG Tools

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)

Demuxed stereo LPCM is messed up (bad header?)