supplemental DCP

[lemgeo]

Hi all,

if the source DCP is encrypted, the supplemental DCP has to be encrypted too?
In that case i have to deliver two kdms.

thanks

[carl]

I can't think of a reason why you couldn't have an unencrypted supplement to an encrypted DCP. You would need new KDMs for the original encrypted part though, since the CPL ID would change.

[lemgeo]

Hi,

the second part of your answer got me confused (about the id).

I have an encrypted "master" dcp and a created supplemental unencrypted dcp.
to the cinema I deliver both packages.
To the cinema I deliver one kdm, by loading the master dcp (adding the kdm i'm provided for DCP-o-matic)
and then make kdm by choosing the cpl of the "master" dcp.
Is that right?

Thanks

[carl]

If you use a supplemental DCP the original DCP's CPL is no longer used: you use the CPL from the supplemental DCP which refers to "assets" (video/audio/subtitles) from the original DCP.

KDMs refer to CPLs, so you would then need a KDM for the supplemental CPL which contained keys for all the assets that you want to use.

Does that make sense?
Regards,
Carl