Blu Ray spins up, but dos not playback

Fasterix · September 27, 2017 at 7:45 PM

Hello Forum,

My system:

Odrodid C2 with with LibreELEC-Odroid_C2.arm-8.0.WRX-RB-Media_build.01

Attached devices via USB: 1 HDD, 1 DVD/Blu Ray player, DVB-T2-stick

As I would like to playback Blu Rays, I followed the instruction here blu-ray [LibreELEC], which says that I only have to install KEYDB.cfg. As the mentioned link does not work, I got KEYDB.cfg from here: KEYDB.cfg.

When I insert a Blu Ray, the drive spins up and the Kodi menu shows "Disk". When I click "playback disk", the drive spins up again, but the movie does not start. Nothing changes at the screen (TV via HDMI), no error messages.

Playback of DVDs works without problems.

What can I do, to trace the reason for this result?

Where can I see logs/error messages?

Any ideas?

Thanks for any help and regards

Fasterix

2re · September 27, 2017 at 9:00 PM

After running this command, everything worked fine for me.

Code

mkdir -p /storage/.config/aacs && curl http://www.labdv.com/aacs/KEYDB.cfg -o /storage/.config/aacs/KEYDB.cfg

Fasterix · September 28, 2017 at 8:04 AM

Quote from 2re

mkdir -p /storage/.config/aacs && curl KEYDB.cfg -o /storage/.config/aacs/KEYDB.cfg

This did not work for me. The KEYDB.cfg file does not contain any keys, instead it shows an error message of a not resolved URL:

HTML

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /aacs/KEYDB.cfg was not found on this server.</p>
<hr>
<address>Apache/2.4.7 (Ubuntu) Server at www.labdv.com Port 80</address>
</body></html>

So instead I executed

Code

mkdir -p /storage/.config/aacs && curl http://vlc-bluray.whoknowsmy.name/files/KEYDB.cfg -o /storage/.config/aacs/KEYDB.cfg

This gave me a file with reasonable size and the KEYDB.cfg apparently contains key information:

Code

; KEYDB.cfg
; 2017-03-19 10:58:43
;
; server: http://www.labdv.com/aacs
; processing keys: 18 (18 from doom9.org forum)
; host certificates: 8 (7 from doom9.org forum)
; disc VUK keys: 20822 keys for 20805 discs (0 from doom9.org forum)

; processing keys
| PK | 0x810827A76E5B2CC1685E3217A23E2186 ; DK_V01-V12
| PK | 0x44145A846F19D096F2C84A2E50C5C4F5 ; DK_V14-V16
[....]

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What I wonder:

1. is my KEYDB.cfg the correct file? If not, where can I receive the correct one?

2. If this is the correct KEYDB.cfg, what am I missing/doing wrong?

Thanks for your kind help

Fasterix

**CvH** · September 28, 2017 at 9:10 AM Official Post

the source of the "official" keydb is down for some reason

so all links are down too

Fasterix · September 28, 2017 at 11:09 AM

Quote from CvH

the source of the "official" keydb is down for some reason

so all links are down too

Yes, I see.

Maybe someone can compare, if http://vlc-bluray.whoknowsmy.name/files provides the same KEYDB,cfg file as "the official server"? At least at the headline of my KEYDB,cfg it says

"server: aacs"

Additionally, I may investigate this issue further on my system.

Is there a way to receive any debug messages or log files?
Or can I execute the Blu Ray player via ssh command-line, so it returns some status information when it starts (and fails)?

2re · September 28, 2017 at 11:20 AM

Just tested the vlc... source, and spider-man 2 blu-ray, works fine. Without the .cfg file. "Failed to play error"

2re · September 28, 2017 at 11:26 AM

What's the name of your blu-ray player?

Fasterix · September 28, 2017 at 11:58 AM

Quote from 2re

What's the name of your blu-ray player?

It is LG BP 40 NB 30 Blu-Ray burner

I have tested it some weeks ago attached to my laptop (using VLC) and playback of Blu Rays worked at that time (same KEYDB.cfg, but different disk)

2re · September 28, 2017 at 12:08 PM

I think this one has a split usb cable (extra power) . Are both connected to your box? If so, try connecting the power one to an other usb-power source.

2re · September 28, 2017 at 12:10 PM

Also not all blu-ray's are listed in the .cfg file, so you should try several

2re · September 28, 2017 at 12:15 PM

... And I think the Region in Kodi-Settings-Player-Discs also must be set

Fasterix · September 28, 2017 at 2:33 PM

Thanks 2re for your support. I did some further investigations. These are the results:

1. Playback of Blu-ray disk on my laptop:

- drive connected via USB split cable into two ports of laptop

- same disk

- same .cfg file

- playback via VLC

result:

- playback works - although it takes ~15 seconds to start

2. Playback of DVD on Kodi

- drive connected via USB split cable into two ports of Odroid C2

- setting of forced region code of DVD player: off

- insert DVD and close tray

result:

- drive spins up

- Kodi main menu shows "Disc"

- Kodi shows popup message in upper right corner like "removeable media mounted" [in German] and title of DVD

- in main window of "Disc" it shows - DVD - [next line:] - playback Disc - open/close

- I can click playback and it starts

3. Playback of Blu-ray on Kodi

- drive connected via USB split cable into two ports of Odroid C2

- same .cfg file as on laptop

- region code of Blu-ray set to: B [Europe/Germany] - other regions setting tested as well

- Insert Blu-ray and close tray

result:

- drive spins up

- Kodi main menu shows "Disk"

- Kodi does not show pop-up message in upper right corner

- in main window of "Disc" it shows - open - [next line:] - playback Disc - open/close

- If I click playback nothing happens

- after ~15 seconds disk stops spinning

Summery (my thoughts):

What seems to be working:

- Blu-ray

- Blu-ray drive

- .cfg file

What is suspicious:

- no pop-up message after closing drive with Blu-ray

- massage in "Disc" window are different: "open" [Blu-ray inserted] vs. "DVD" [DVD inserted]

Does this help to trace the issue?

Thanks again for your help

Fasterix

2re · September 28, 2017 at 3:31 PM

I Have a LG BP50NB40 and with the .cfg file from your post blu-ray plays fine, but not with both usb's connected to the box (NexBox A95X). I have to use a second power source because my box can't deliver enough power, so if you've tried this, than i would guess it's a driver issue. Maybe your drive isn't supported.

**chewitt** · September 29, 2017 at 7:21 AM Official Post

Before debating drive support check that the disc you are attempting to play has keys in the KEYDB.cfg file. You can also tail the Kodi log and if you see errors about encrypted content .. it's because no key exists to decrypt it.

**CvH** · September 30, 2017 at 12:50 PM Official Post

Quote from Fasterix

Maybe someone can compare, if http://vlc-bluray.whoknowsmy.name/files provides the same KEYDB,cfg file as "the official server"?

is an older version, so likely new entries are missing

Fasterix · October 7, 2017 at 10:16 AM

Thanks for your attention to my issue. I did some further investigation (got a second Bluray disk) and collected a comprehensive log file from /storage/.kodi/temp/kodi.log (find attached)

What I did:

rebooted the system
inserted Bluray disk I and try to playback via Disk menu (-> failed)
inserted Bluray disk II and try to playback via Disk menu (-> failed)
inserted DVD and try to playback via Disk menu (-> ok)
inserted Bluray disk I and try to playback via Video menu (-> failed)
inserted Bluray disk II and try to playback via Video menu (-> failed)

I have marked these events in the logfile (partly stripped) with ==== Notes ====

I also attached the full output of dmesg, maybe this contains some hints...

I hope this helps to find out, what is wrong or missing on my system

Still very thankful for your great support

Fasterix

Fasterix · October 12, 2017 at 5:52 PM

What I also found out recently:

For bluray "No Turning Back" I could not find a key in KEYDB.cfg. This might be a reason for not playing this bluray
When I tested bluray "The Book Thief" again a few days ago on my laptop (VLC) using the Odroid drive, I received messages like "Blu-ray error: AACS Host certificate revoked?"^{I wonder, if this is a correct message and if so, could this be caused by inserting "No Turning Back" bluray previously? (but both blurays are issued 2014)}

I am not able to prove my suspicion, but maybe one of you can compile this to a whole picture....

**chewitt** · October 12, 2017 at 7:34 PM Official Post

It's all about KEYDB.cfg .. find a newer one and things might work.