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Time Warner Cable Tuning Adapter - The Carolinas

Discussion in 'TiVo Series3 HDTV DVRs' started by jmaditto, Feb 5, 2009.

  1. Alleyman

    Alleyman New Member

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    Jul 9, 2005
    North Carolina
    Well, the pixelization wouldn't bother me as much as the tuning adapter doing the 8 flashing and locking up so you can't change the channels, as I have read some people having issues with. Are these issues not a factor anymore? I have to admit, I have read through almost all 40 pages of this thread so I may be working on out of date information.
     
  2. SCSIRAID

    SCSIRAID Active Member

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    Feb 2, 2003
    Vero Beach, FL
    The 8 flash issue has happened to me once since Feburary. All three of my TA's caught that 'virus'. The most common issue with the TA is lost recordings due to a 'tuning failure'... where TiVo does not tune properly. The recording history entry will say something like 'couldnt record because the video signal was missing'. I see that once about every two weeks. The good news is that since the show never made it into the Now Playing List, the next showing should be recorded.

    The pixelation problem on SDV channels is being worked on.. cross your fingers.
     
  3. Alleyman

    Alleyman New Member

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    Jul 9, 2005
    North Carolina
    Sorry for the delay in replying, I've been sick this past weekend.

    As for the TA not tuning in the channels, this is only on the SDV channels (Local HD, etc) correct? Or is this on the Local non-SDV channels as well? Also, how does one correct the TA not tuning the channel issue?
     
  4. Shmooh

    Shmooh New Member

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    Feb 20, 2009
    Cary, NC
    Correct - only the SDV channels have problems recording. Your other channels will record with no issues whatsoever (or they should, at least - nobody else seems to have problems with it).

    I'm not exactly sure what you mean by the "TA not tuning the channel issue", but assuming you mean just not finding an SDV channel ('channel not available') and not the 8-blink or other problem... It often helps to just force the Tivo to change channels on both tuners. I.e., do something like this: Channel Up, Channel Up, Live TV, Channel Up, Channel Up
     
  5. Alleyman

    Alleyman New Member

    7
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    Jul 9, 2005
    North Carolina
    Yes that's what I was talking about the "channel not available" message. As far as the 8 blink issue, SCSIRAID said he hasn't had that problem since Feb, so I'm thinking they must've gotten that problem resolved.

    Just a little "worried" about changing since the Broadcast HD for the Raleigh area (5-1, 11-1, 17-1, etc) are working ok, and I'd hate to loose channels because of the TA.
     
  6. Train_and_TV_fan

    Train_and_TV_fan New Member

    5
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    Jan 14, 2008
    How can I tell if a recording problem is with my TiVo HD, Time Warner of Raleigh, or the Tuning Adaptor.

    Tuesday, January 19 the TiVo recorded the Bourne Ultimatum on USAHD, channel 258 from 7:30 pm to 10:10. The whole program appeared to be recorded but the playback goes to pause at 19 minutes. Pressing Play has no effect. Pressing Fast-Forward jumps to 1:25 and everything works as expected from there on. I have not been able to access the section from 19 to 1:25.

    Other shows recorded normally during that period and since. Nothing on the second tuner started or stopped at the 19 minute spot.

    Any suggestions on what may have caused this freeze up would be appreciated.
     
  7. Max Camber

    Max Camber New Member

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    Oct 30, 2009
    Austin, TX
    By TiVo? I'm still getting the runaround from level 1 support about it being a signal strength issue.
     
  8. SCSIRAID

    SCSIRAID Active Member

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    Feb 2, 2003
    Vero Beach, FL
    It is not a signal strength issue. Im engaged with TWC and they tell me that TiVo is fully engaged and working the issue. I have no confirmation of that (which isnt surprising) but I do trust my TWC contact. TWC has proven beyond any doubt that it is related to programs being added or removed from the SDV Transport stream. I actively participated in the experiment that proved it which was conducted on my TiVo in my family room. :D TWC has given TiVo the 'smoking gun.'

    About all we can do is sit back and wait for TiVo. Calling TiVo Customer Service is unlikely to do any good and just ends up costing TiVo money which we ultimately get to pay in the cost of TiVo Service. You will probably just keep getting 'its a signal quality/strength issue' anyway. Its time for a 'leap of faith'. Optimistic devil, aren't I. :D
     
  9. convergent

    convergent Member

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    Jan 3, 2007
    Raleigh, NC
    That's unfortunate. A smoking gun doesn't seem to get things done quickly with Tivo. I am still awaiting them to respond to the fact that 100% of their Tivo HD XLs have a reboot problem, which someone on the forum has troubleshot and solved, and yet they still don't even acknowledge that there is a problem. This problem with SDV is about 10 orders of magnitude more complex than that, and only affects a subset of Tivo users. TWC is moving more and more to SDV which makes this problem a bigger and bigger issue for anyone using a non-TWC DVR. It is so frustrating. TWC seems committed to having the crappiest DVR on the planet, and yet making life miserable for anyone wanting to have something better. I don't get it. Its like they want their customers to be miserable and then happily pay them outrageous prices for it.
     
  10. Max Camber

    Max Camber New Member

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    Oct 30, 2009
    Austin, TX
    We know that, but I spent an hour arguing about it with level 1 phone support last time I called in. I don't find it acceptable that they are still having people pay for RMA service and repeated truck rolls when neither of those is going to fix the issue.

    Having anyone report that TiVo is actually working on it is good news as far as I am concerned.

    I would have stopped calling them months ago if someone had just said "Yes, we know it's not a signal strength issue and we're working on it."
     
  11. SCSIRAID

    SCSIRAID Active Member

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    Feb 2, 2003
    Vero Beach, FL
    Yup... A lot of angst and money could be saved if TiVo would 'own up' to it on the helpdesk. However, to be fair, they may have just realized the cause when TWC handed them the smoking gun. They could have been dismissing what they were getting as signal issues. TWC even thought it was signal quality for a looon time. If I hadnt persisted that is probably where we still would be parked.

    I wouldnt be surprised if TWC actually started telling people about it and stopping the truck rolls on macroblocking issues. Its costing them money too.
     
  12. SCSIRAID

    SCSIRAID Active Member

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    Feb 2, 2003
    Vero Beach, FL
    Just to be 100% accurate... TWC says TiVo is working on it... I wish I could confirm that its true but I trust my source. Its that 'leap of faith' thing....
     
  13. CrispyCritter

    CrispyCritter Purple Ribbon Wearer

    3,652
    2
    Feb 28, 2001
    North...
    I'm not following your reasoning here, perhaps because I'm missing something (though I've been reading your posts with great attention; thanks very much for both the investigating and the reports!) Why are you concluding it is TiVo that is supposed to be fixing this?

    My reading of the situation is that there is a glitch in the signals of all the SDV programs when a program is added or removed from the transport stream. This glitch is introduced by some small, but significant, percentage of head stream hardware - it's not something that happens with all SDV head end hardware. The TW DVR signal processor is not affected by glitches of this sort, but the TiVo signal processor is, causing TiVo pixelation.

    Why is it TiVo that has to fix this, as opposed to TW fixing the particular head-end hardware/software that is causing the glitch? Am I missing a step?
     
  14. SCSIRAID

    SCSIRAID Active Member

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    Feb 2, 2003
    Vero Beach, FL
    That was an earlier speculation... The Tektronix MPEG analyzer indicated that the stream was 100% legal. When TWC encryption (CA Encryption) was turned off (which disables CP Encryption - Cablecard to Host) the problem disappeared. Since HDC cableboxes and TiVo both are getting the very same MPEG and using the very same cablecard technology to decode it and only TiVo is glitching, that puts the problem squarely in TiVo's yard and points strongly at CP Encryption. I believe TiVo is throwing up when it sees the PAT change and is probably messing up the CP encryption key. TiVo has never had to deal with a 'dynamic' PAT until SDV arrived as linear channels are 'static' (ie PAT doesnt change).
     
  15. jchas41

    jchas41 New Member

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    Feb 5, 2009
    I REALLY hope this fix comes quickly. I am so frustrated with dealing with this SDV-pixelation issue up here in CNY. I ended up switching my plan from annual to monthly because I'm not sure I can deal with this if it continues for 3 or 4 more months.
    Tivo customer service hasn't helped either. I called requesting a refund for the RMA that fixed absolutely nothing, of course, I was told that was "not possible". Really frustrating because aside from this problem, my wife and I absolutely love the thing.:(
     
  16. dlfl

    dlfl Cranky old novice

    7,056
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    Jul 6, 2006
    Dayton OH
    Whew! A glossary please? :confused:
    CA ? CP? PAT?
    TIA
     
  17. SCSIRAID

    SCSIRAID Active Member

    2,323
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    Feb 2, 2003
    Vero Beach, FL
    HAHA :D

    CA = Conditional Availability - This is the cableco encryption. Cisco's is called Powerkey. Motorola's is called MediaCipher. This is the way the cableco protects its content.

    CP = Copy Protection - This is the re-encryption used between the cablecard and the TiVo.

    The encryption used by the cableco and the encryption between the cablecard and the TiVo are different and are managed differently. The cablecard is told by TiVo what program number is selected for viewing. The cablecard looks at the PAT and the PMT's and thus knows what PIDs are part of the program. If cablecard is authorized for that programs, it decrypts those PID's and leaves the other ones alone. After removing the CA protection, cablecard re-encrypts the program's PIDs using the CP encryption key and passes the whole stream to TiVo. TiVo also knows what PIDs are his by the PAT and PMT. He also knows the CP key and decrypts those PIDs... to make it even wilder... TiVo then reencrypts somewhere downstream with its own TSN info so you cant move HDD's around. That pert I dont know much about.

    PAT - Program Association Table - This is PID (Packet ID) 0 in the mpeg stream. The PAT tells how many programs are in the mpeg transport stream and what the PID numbers are for the PMT for each one of the programs.

    PMT - Program Map Table - This tells what substreams are part of the program.. i.e. video, audio1, audio2 etc...

    PID - Packet ID - Each data packet in a transport stream has a Packet ID which tells what the packet is and to what program it belongs to. Packet ID 0 is special and is the PAT.

    Whew... Did that help?
     
  18. dlfl

    dlfl Cranky old novice

    7,056
    27
    Jul 6, 2006
    Dayton OH
    Great! Thanks! It appears ridiculously complex on the surface, but knowing how quickly encryption/decryption can be done it isn't that bad I guess. I wonder if the fix will be just pure software algorithm or (software again) control of the chips. Hopefully it's not something intrinsic to the chips used.
     
  19. SCSIRAID

    SCSIRAID Active Member

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    Feb 2, 2003
    Vero Beach, FL
    My opinion is that its purely sw. All the encryption works fine as you can see from linear channels. It appears that TiVo SW is just freaking when it sees the PAT change. However... its just my opinion... We will likely never know the 'truth'. All I want is the FIX! :D :D :D

    As my wife says... dont tell me about the labor.. just show me the baby.
     
  20. LockRob

    LockRob New Member

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    Aug 24, 2003
    I wish I had read this thread more religiously. I just finished talking to a Tivo customer service rep who told me to get an in-line signal strength booster.
     

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