On Sun, Jan 24, 2010 at 1:45 AM, Konstantin Dimitrov <kosio.dimitrov@xxxxxxxxx> wrote: > On Sat, Jan 23, 2010 at 1:31 AM, Manu Abraham <abraham.manu@xxxxxxxxx> wrote: >> On Sun, Jan 10, 2010 at 9:21 PM, Ian Wilkinson <null@xxxxxxxxxxxxxxxxx> wrote: >>> HoP wrote: >>> >>> I don't know the details into the USB device, but each of those CAM's >>> have bandwidth limits on them and they vary from one CAM to the other. >>> Also, there is a limit on the number of simultaneous PID's that which >>> you can decrypt. >>> >>> Some allow only 1 PID, some allow 3. Those are the basic CAM's for >>> home usage.The most expensive CAM's allow a maximum of 24 PID's. But >>> >>> >>> You, of course, ment number of descramblers not PIDS because it is evident >>> that getting TV service descrambled, you need as minimum 2 PIDS for A/V. >>> >>> Anyway, it is very good note. Users, in general, don't know about it. >>> >> >> If it is using a CI+ plus chip (I heard from someone that it is a CI+ >> chip inside) : >> http://www.smardtv.com/index.php?page=ciplus >> >> After reading the CI+ specifications, I doubt that it can be supported >> under Linux with open source support, without a paired decoder >> hardware or software decoder. A paired open source software decoder >> seems highly unlikely, as the output of the CI+ module is eventually >> an encrypted stream which can be descrambled with the relevant keys. >> The TS is not supposed to be stored on disk, or that's what the whole >> concept is for CI+ >> >> http://www.ci-plus.com/data/ci-plus_overview_v2009-07-06.pdf >> >> See pages 7, 8 , 12, 15 >> >> It could be possible to pair a software decoder with a key and hence >> under Windows, but under Linux I would really doubt it, if it happens >> to be a CI+ chip > > at least in Windows Hauppage WinTV-CI USB (which is OEM version of > SmartDTV USB CI) allows you to capture the decrypted stream to your > hard drive (i've just tested it). Maybe it is not CI+ itself in the first place > so, i can't see a reason why even if it has CI+ chip inside same > functionally as in Windows can't be provided in Linux if someone > developed a driver. It would be interesting to know what chips the hardware has ... Regards, Manu -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
