Nathan Whittacre wrote: > I am currently working with a broadcasting company that has about 20 > channels on an Echostar satellite. They are looking to multiplex a few > MPEG-4 streams along side their MPEG-2 streams. They are using > Echostar's conditional access to restrict viewing. If we used a PCI > tuner with Linux that supports a CAM, could we, theoretically pull the > MPEG-4 stream out of the multiplexed stream and decode it? They tell me > that some set-top-boxes can do this...but we do not have any specifics > yet. They are looking for some guidance on this matter and the stream > would only be used for the PCI based tuner card on Linux.
AFAIK CI is only supported on AV7110 based cards (Hauppauge Nexus-S), not on the Budget/Nova or other cards. There are two implementations of the CI prrotocol stack: An old one in the firmware, which has some quirks and does not work with many CAMs. The newer one just implements a CI link layer interface which requires a userspace library for handling CAMs. Code to do that is included in VDR http://www.cadsoft.de/vdr/, or in the libdvb from http://www.metzlerbros.org/dvb/index.html. HTH, Johannes -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
