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Message: <blockquote data-quote="mm1352000" data-source="post: 874146" data-attributes="member: 82144">Hi again If you're comparing Romjin's results with DjeC64 then I think either you or I have misunderstood. My understanding was that DjeC64 is only able to decrypt one channel with his CAM, whereas Romjin is able to decrypt at least two. That has nothing to do with the EMM updates - it is probably to do with the CAMs being slightly different (HW revision, FW revision... who knows). Romjin has said that he still has to put his smartcard/CAM in a regular receiver every now and then because the EMM updates are not being received by his CAM (comment --><a href="https://forum.team-mediaportal.com/threads/cine-s2-with-ci-does-not-work.102198/page-3#post-854367" target="_blank">here</a><--). I have not seen DjeC64 mention that, but I would guess that the same situation applies for him... and the same would apply for you. My guess is that this is caused by the MTD implementation as I tried to explain. Let me try to explain again with more detail... You can think of a CAM as a small CPU. One of the tasks of this CPU is to decrypt channels. When the CAM is asked to decrypt a channel, it must decrypt each of the elementary streams that make the channel - the video stream, the audio stream(s), the subtitles etc. Each of those elementary streams is associated with a different PID (eg. video PID = 100, AC3/DD audio PID = 200, MPEG audio PID = 201). To decrypt a channel successfully, the CAM must be powerful enough to decrypt all of the elementary streams (or PIDs) simultaneously. Some CAMs have more powerful "CPUs" than others - the more powerful the CAM, the more PIDs it can decrypt (and therefore, the more channels it can decrypt simultaneously). With a "normal" tuner (such as the FloppyDTV, or a TBS, KNC, TechniSat/Twinhan/TerraTec, Technotrend etc. with CI slot extention), I think the whole transport stream is passed through the CAM and the CAM decrypts the streams that it is instructed to decrypt. The CAM has access to the EMM streams in the transport stream so it can update the subscription. With DD MTD, the CAM is shared between multiple tuners. Each tuner can ask the CAM to decrypt one channel. The CAM does not seem to receive the full transport stream from each of the tuners because that would overload the CAM. Instead, the driver passes only the critical streams (video, audio, subtitles) associated with the channels that the CAM must decrypt (this does not seem to include the EMM streams, and that is why the subscription is not updated automatically). With both a "normal" tuner and a DD tuner, the CAM processing power is still the limitation. If the CAM can only decrypt 4 elementary streams then you can only decrypt 1 (or at most 2) TV channels simultaneously. If the CAM can decrypt 8 elementary streams, then you might get as many as 4 channels decrypted simultaneously. It depends on the channels - how many audio and subtitles streams they have. I fully understand that. Unfortunately nobody can guarantee anything for you. I think the issue is mostly finding a good CAM. In my experience, some CAMs are simply not compatible with some tuners. I have two CAMs - 1 CAM works with half of my tuners, the other CAM also works with only half. TBS, Anysee and NetUP tuners are the only tuners that have been able to work with both CAMs. I've tried:- FloppyDTV S2 (can decrypt multiple channels with CAM 1)- WinTV CI (can decrypt one channel with CAM 1)- KNC TV-Station DVB-S2 (can decrypt multiple channels with CAM 1)- TechniSat SkyStar HD2 [same as TerraTec Cinergy S2 and Azurewave/Twinhan AD-SP400] (can decrypt one channel with CAM 2)- TechnoTrend Budget S2-3200 (can decrypt one channel with CAM 2) My comments probably won't help you make a decision, but at least you might have more of a picture of how much risk is involved. mm</blockquote>

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