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). 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. > > 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 > -- 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
