From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-we0-f173.google.com ([74.125.82.173]:35953 "EHLO mail-we0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751055AbbBWOV7 (ORCPT ); Mon, 23 Feb 2015 09:21:59 -0500 Received: by wevk48 with SMTP id k48so18597362wev.3 for ; Mon, 23 Feb 2015 06:21:57 -0800 (PST) Message-ID: <54EB3784.4090908@gmail.com> Date: Mon, 23 Feb 2015 15:21:56 +0100 From: =?UTF-8?B?VHljaG8gTMO8cnNlbg==?= MIME-Version: 1.0 To: Rudy Zijlstra , =?UTF-8?B?SG9uemEgUGV0?= =?UTF-8?B?cm91xaE=?= CC: Linux Media Mailing List Subject: Re: DVB Simulcrypt References: <54E8F8F4.1010601@grumpydevil.homelinux.org> <54E9F59A.4070407@grumpydevil.homelinux.org> <54EB016D.8040105@grumpydevil.homelinux.org> <54EB2099.5040103@grumpydevil.homelinux.org> In-Reply-To: <54EB2099.5040103@grumpydevil.homelinux.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: Op 23-02-15 om 13:44 schreef Rudy Zijlstra: > On 23-02-15 12:21, Honza Petrouš wrote: >> 2015-02-23 11:31 GMT+01:00 Rudy Zijlstra >> : >>> On 23-02-15 08:44, Honza Petrouš wrote: >>> >>> Hi Rudy. >>> >>> 2015-02-22 16:28 GMT+01:00 Rudy Zijlstra >>> : >>>> Some more info >>>> >>>> On 21-02-15 22:30, Rudy Zijlstra wrote: >>>>> Dears (Hans?) >>>>> >>>>> My setup, where the cable operator was using only irdeto, was working >>>>> good. Then the cable operator merged with another, and now the >>>>> networks are >>>>> being merged. As a result, the encryption has moved from irdeto >>>>> only to >>>>> simulcyrpt with Irdeto and Nagra. >>>>> >>>>> Current status: >>>>> - when i put the CA card in a STB, it works >>>>> - when trying to record an encrypted channel from PC, it no longer >>>>> works. >>>> Recording system has 3 tuners. All equal, all with same permissions >>>> on the >>>> smartcard. On cards 0 and 2 does not work, but card 1 does work, on >>>> all >>>> channels tested. >>>> >>> Does it mean that descrambling is not working for you? If so, >>> how do you manage descrambling? By CI-CAM module >>> or by some "softcam" like oscam? >>> >>> Or do you record ENCRYPTED stream and decrypt the recordings >>> later on? >>> >>> >>> Each tuner has its own legal CI-CAM module. And yes, except for the >>> second >>> tuner descrambling no longer works >>> >> I'm not much familiar with MythTV, so I'm guessing from the mux setup >> changes, >> but did you check to descramble the same channel on different tuners? >> To eliminate >> the particular change inside one service only. >> >> Of course there can be also software issue in CI-CAM module itself >> (fail in parsing >> PMT CA descriptors etc). >> >> TBH, I think it must be application layer issue, not kernel one. >> > See above: > > Recording system has 3 tuners. All equal, all with same permissions on > the > smartcard. On cards 0 and 2 does not work, but card 1 does work, on all > channels tested. > > additional finfo: i tested the same channel(s) on all 3 tuners. For > now i have re-configured mythtv to use only the second tuner for > encrypted channels. > This does reduce scheduling flexibility though. > > Would to understand what makes the difference, so i can ask the right > questions to MythTV developers. > > > As the decryption does work with 1 tuner, i see 2 options: > - depending on tuner id the default CA descriptor used is different, > and this selection is not expoerted on API level (kernel issue) > - application needs to select which CA to use (and currently does not > do this) > It should be the latter one. I'm also having Ziggo for provider, but always used FFdecsawrapper/Oscam for decryption (also legal in The Netherlands, providing you have a paid subscription) ECM CA system id's 0x604 or 0x602 (depending on your region) gets you Irdeto, while ECM CA system id's 0x1850 or 0x1801 get you Nagra. Correctly configured FFdecsa/Oscam can deal with it, MythTV probably cannot. Check it out at: http://www.dtvmonitor.com/nl/?guid=0BE90D25-BA46-7B93-FDCD-20EFC79691E0 That's a snapshot from today, monitored from Groningen. Cheers, Tycho.