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[linux-dvb] Re: Which DVB-S card ?
I just recently installed a brand new system with Gentoo, it had nothing
in the box except for the DVB-S card. Exhibited the same problems as
the old system started developing - CAM initialised, DVB stream is never
recognised as MPEG audio or video by MythTV, occasionally there is a
glitch in transmission and 5-10 seconds gets transmitted unencrypted and
that's all I get (this sometimes happens when the smartcard isn't even
in the CAM, so it must be a transmission glitch rather than a
decryption-working situation).
When it was reliably working I did post in this forum to say so, but not
long afterwards there was a serious bug in MythTV that reared its head -
mythbackend would crash due to an recursive function call in a poorly
written subroutine. Eventually I found it and fixed it, but by then I
had cvs updated my source dozens of times for both Myth and dvb-kernel,
hoping to find a version that had the bug fixed, and it was no longer
decrypting the DVB stream reliably.
I have reverted to the CVS builds of both MythTV and dvb-kernel from the
date of my post when I had it working, but still I get no decrypted
streams from the card - as I said previously I've pretty much tried
everything to get this thing working.
Irek Defee wrote:
All the information was somehow said on the linuxdvb list if you search
exchanges on the CI development. I have TT budget cards with CAM and
without and I was interested in running CAM.
The CI driver is experimental, incomplete and it may have bugs. But the
biggest problem is support for different systems.
Of course it is puzzling if you had it working and now it is not
working.
Have you checked with newly installed system?
My problem for is that I would need to get full TS decrypted and stream
it out of the card. But I do not know if full feature card is able to do
this if it has the right cam or it can only output single pids.
Irek
-----Original Message-----
From: linux-dvb-bounce@linuxtv.org [mailto:linux-dvb-bounce@linuxtv.org]
On Behalf Of Denis Cheong
Sent: 13. elokuuta 2004 12:32
To: linux-dvb@linuxtv.org
Subject: [linux-dvb] Re: Which DVB-S card ?
This is very interesting information, and was not apparent from any
documentation I've seen for the budget-ci card or any other mailing
list!
I do of course know that it hasn't been released officially - it is only
in the CVS of course. And as I said I do acknowledge the hard work of
the developers to get the drivers to this stage.
The card in my case is a Technotrend (which is the same as the Nova -
but is this a chicken-and-egg thing?) but looking at the source code,
there isn't enough documentation to figure out what's going on and find
out where it's bombing out (well it doesn't really bomb out, just
doesn't work).
This being all said, I've seen it actually work and decode a significant
amount of video, but why it doesn't work any more I still can't figure
out ...
Still, and all things and hard work acknowledged, what I originally
stated remains the case - if you are after a card that will decrypt
using a CAM under linux, then you are well-advised to steer clear of the
budget-ci cards for the time being.
Irek Defee wrote:
The CI driver in fact was never released officially. And the
difference with full feature card is that there CI software is
in the card.
I don't know if the Linux driver developers can be blamed for this.
They
are extremely bright and they would surely do it. Or maybe they even
have done this for themselves already.
But as I heard from the mailing list one of the main problems in
implementing CI software for NOVA was that the CAM control software is
not done according to the standard, there are proprietary parts. This
requires cooperation with the system owners (e.g. Iredto) to implement
it. And system owners are not willing to cooperate since they don't
want
to release the
software to the public domain. Trying to find out the way to
communicate with CAM might be illegal. This is why everything works in
Windows and in FF card but not in NOVA.
Irek
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