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BD-J app from another disk?

1 reply [Last post]
Joined: 2008-02-29

Is it possible to persistently load a BD-J application into the Blu-Ray player so that it can run against other disks? Specifically I am thinking about a custom movie player app with special audio/video playback features. Even though I am assuming I would have to initially load the app from a home-grown BD disc, I would want to be able to use it in conjunction with other discs. From what I am gathering from the security model, this doesn' t seem possible. Is the alternative to go to every movie studio to try to get it bundled with every movie or something? (yeah, right....)

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Joined: 2005-07-11

I wonder what aspect of Security model you think would prevent from doing such a thing?

I'm not an expert at BD-J Security model either, however, from what I understand there are
ways for persistent storage to be shared between two disks. And I believe in your scenario
you would want to explore using virtual package with BUDA Credentials (or may be just
application credentials) for accessing/altering files/content from a disk belonging to a
different organization.

I'm not sure if your app's requirement is as simple as that. However, for accessing another
disk's resources (a disk with different root certificate) you will need to get the signed
permission from the owner to access the resources.