FYI: KDM expiration date limitation in server.

[Aswippe Johnson]

Looks like I hit a ceiling on a GDC IMB. KDM period was set for 10 years, and the GDC said:

KDM is limited by certificate.

I shortened the period to two years and it was fine. So, I guess GDC doesn't expect (or want) their servers/IMBs to last that long? Planned obsolescence? (In case you're wondering why a 10-year KDM... it's to protect purchased content.)

[Carsten]

In another forum, I recently learned that some Qube servers already had expired certificates and Qube said they wouldn't be able to extend beyond next year...

- Carsten

[Aswippe Johnson]

That should be criminal. Time for the theatres to band together with a huge anti-trust lawsuit.

[Carsten]

Hmm, interesting - I tried this on our Barco ICMP - a validity window of 1 week worked, when I tried from 2016 to 2026, the KDM was ingested okay and displayed as okay, but when I tried to play the CPL, I received this error:

Bildschirmfoto 2016-09-05 um 03.53.08.jpg

- Carsten

[Aswippe Johnson]

Methinks we've uncovered something here. I posted about this in another forum, and someone mentioned they remembered a KDM issued for a feature in 2012 with an expiration date of 2026, and it was fine. It was on a Dolby server.

Be interesting to see how other servers behave...

[scorpio81]

Maybe this is happening because of the expiration date of the certificates on servers? If KDM expiration date is later than certificate expiration date then KDM is rejected I think.

[Aswippe Johnson]

Maybe this is happening because of the expiration date of the certificates on servers?

That's exactly why. It's not DoM.

[Carsten]

Wondering how decides about certificate validity of servers? Is there a technical/security/standards driven expiration date, or is it up to the manufacturer to decide?

- Carsten