[mythtv] SVN 7245 thinks WB HDTV is encrypted?

Kenneth Aafl°y lists at kenneth.aafloy.net
Wed Sep 14 13:10:12 UTC 2005


Onsdag 14 september 2005 14:59, skrev Kenneth Aafl°y:
> Onsdag 14 september 2005 03:58, skrev Daniel Kristjansson:
> > Program Map Table ver(16) pid(0x30) pnum(3)
> >   Registration Descriptor: 'GA94' ATSC program ID A/53
> >   Unknown Descriptor (0x10) length(6)
> >   Component Name Descriptor  lang(Unknown) wdwb-hd
> >   Consumer Restrictions Control Descriptor (0xaa) length(1)
> >   Conditional Access: sid(0x0) pid(0x30) data_size(0)
> >
> > That last descriptor is your problem, the transmitter is adding
> > a Conditional Access table to the PMT. There is no code in MythTV
> > to handle encryption for ATSC.
> >
> > Does anyone know if a system id 0 is some kind of marker
> > for unencrypted?
> >
> > I haven't purchased any CA standards as this isn't normally
> > used in North America.
>
> "CA_system_ID -- This is an 16 bit field indicating the type of CA system
> applicable for either the associated ECM and/or EMM streams. The coding of
> this is privately defined and is not specified by ITU -T | ISO/IEC."
>
> Is either "PES packet payload" or transport_scrambling_control set to
> anything other than 0 in those streams?
>
> It could be that they are getting ready for ppv.

Should be usefull:
http://www.atsc.org/standards/a_70a.pdf

Kenneth


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