23 May
2017
23 May
'17
9:40 a.m.
Hi Wolfgang,
Thanks for pointing this out. "shall have an optional 'scope'
attribute"
is a beautifully vague phrase :)
I have added that attribute in my development copy.
This may be causing us problems but first I think we have to work out why
the Sony won't even happily accept signed unencrypted SMPTE DCPs from DoM.
Thanks for your help,
Carl
On Wed, 17 May 2017, Wolfgang Woehl wrote:
I suspect the issue might be how the Sony box handles
KeyType’s scope value in the KDM-for-SMPTE-composition case. See ST:430-1 section 5.2.8.2
TypedKeyId.
I believe the mentioned KDM authoring systems are correct wrt KeyType’s scope. In other
words: explicit mentioning in the XML document is not necessary because attribute and
value are defined and set in the related schema:
<xs:attribute name="scope" type="xs:anyURI" use=“optional"
default="http://www.smpte-ra.org/430-1/2006/KDM#kdm-key-type" />
The related language in ST:430-1 – while it seems ambiguous to the cursory glance – is
ultimately quite clear:
The KeyType element shall have an optional “scope” attribute, which shall be a URI value
identifying the normative reference which defines the four character key type identifier
contained within the element. The default value of the scope attribute shall be the URI
value “http://www.smpte-ra.org/430-1/2006/KDM#kdm- key-type”. (ST:430-1 5.2.8.2)
To the best of my knowledge: Insisting on the value in the KDM XML document would be a
bug in the playback system.
Regards, Wolfgang
Carl Hetherington via DCPomatic:
Carsten Kurz via DCPomatic:
Okay, I tried a KDM created by KDM-Studio, and it
didn’t work. Same
result as with the KDMs created by DCP-o-matic directly.
I don’t create KDMs too often, so I had to rethink the whole process,
here is what I did:
I had created the SONY as a screen in KDM Studio before.
For the same DCP-o-matic project I created SMPTE KDMs for, I created
a DKDM using the certificate KDM-Studio provides. No complaints. I
created a new screen in DCP-o-matic using this certificate, and
created a KDM (DKDM) for it. I created a new production and booking
in KDM Studio with this DKDM. I made sure all the windows fit.
Then issued KDMs, received them via email (see below), and ingested
them on the Sony. Ingested the feature on the Sony. KDM was shown
attached to the feature as in all my previous Sony tests. Tried to
play - got the same result…
I will now try to replicate this same process with IOP.
OK, most interesting. Pending confirmation that the same process works with IOP, this
would imply that Easy DCP Creator (as I believe dcptools.com is using) has the same
problems that DoM has with creating KDMs for SMPTE DCPs on Sonys.
Cheers,
Carl
- Carsten
> Anfang der weitergeleiteten Nachricht:
>
> Von: KDM Studio <delivery(a)dcptools.com>
> Betreff: KDM Delivery 'Test_SMPTE' 'Test für Sony' for
> 'Linden-Theater' Datum: 13. Mai 2017 um 18:50:38 MESZ
> An: audiovisual(a)t-online.de
> Antwort an: audiovisual(a)t-online.de
>
> <https://www.dcptools.com/>
>
> Dear Carsten Kurz,
>
> please find attached to this email your KDMs.
>
> The KDMs are valid for the following booking time frame:
> 13-05-2017 02:00 (Europe/Berlin Time zone) - 18-05-2017 02:00
> (Europe/Berlin Time zone)
>
> The KDMs are issued for:
> Linden-Theater
>
> Release: Test-SMPTE
>
> Screens: Saal1, SonyAutoSerial
>
> KDMs are valid for the following configuration:
>
> Release: Test-SMPTE
>
> Screen: Saal1, Media Block: SN- (Sony manual upload 2017-03-17)
> Screen: SonyAutoSerial, Media Block: SN-1100047
>
>
> Please ingest the KDMs immediately to make sure that the content is
> free of errors and corruption.
>
>
> You can reach us at audiovisual(a)t-online.de
> <mailto:audiovisual@t-online.de>. Please include the name of the
> erroneous KDMs and the server certificate or serial number of your
> media block when requesting new KDMs.
>
> To ingest KDMs on common play-out servers please follow these
> instructions:
>
> Download the attached zipfile and extract all KDMs.
> Copy the extracted KDMs to any USB thumbdrive. Safely eject and
> remove the thumbdrive from your computer. Insert the thumbdrive
> with the key files to the front USB port on the play-out server
> (i.e. Doremi, Dolby, Kodak) where the Feature Presentation is
> loaded. Keys may also be ingested from the central library server
> (also sometimes referred to as the Library Management Server, or
> LMS). When the ingest window appears, please select all available
> keys and click on the Ingest button. Repeat the above steps for all
> servers that are used to play the Feature Presentation. With best
> regards,
>
> KDM Studio
>
> Attachments:
> k_TEST_SMPTE_FTR_Linden-Theater_20170513_20170518_AVS.zip
>
> powered by
> DCPTools KDM Studio
> www.dcptools.com <https://www.dcptools.com/products/kdm-studio/
>>
--
Carl Hetherington <cth(a)carlh.net>
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