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Is MPEG4 Our Real Issue??

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by lguvenoz, Nov 4, 2006.

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  1. lguvenoz

    lguvenoz Icon

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    I would agree completely that D* should have used a proper codec. The basic premise is that they didn't and are scrambling as a result. They were sloppy with this implementation.

    In terms of the "it's just TV" comment I think they thought "What's the worst that's going to happen? People get some pixelation or audio pops, big deal." They did not take into account the ripple effect that having a cavalier attitude towards the codec would have. I do not have the inside contacts to bounce these ideas of D* people, but I feel strongly that this is a real potential source of problems.

    I really think they thought the H20 would shake all the bugs out of whatever implementation they chose for MPEG4 and that was wrong.

    They also did not account for the varied MPEG4 encoding systems that have been implemented based upon the various threads in this forum, and that was wrong.
     
  2. LameLefty

    LameLefty I used to be a rocket scientist

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    You could very well be right, along with off the shelf encoders at all the locals, contributing to the problem.
     
  3. matto

    matto Banned User

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    mcl writes code for a living. and you?
     
  4. mcl

    mcl Legend

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    Fixed.
     
  5. LameLefty

    LameLefty I used to be a rocket scientist

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    I've written code for manned spaceflight lifesupport systems in a previous career. So mcl can kiss my derriere, thanks. :)
     
  6. btmoore

    btmoore Hall Of Fame

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    Soc7 Abend
     
  7. LameLefty

    LameLefty I used to be a rocket scientist

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    Misquoting someone? Clever.
     
  8. matto

    matto Banned User

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    oh snap. my bad :)
     
  9. PoitNarf

    PoitNarf New Member

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    :backtotop
     
  10. btmoore

    btmoore Hall Of Fame

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    Makes me concerned about manned spaceflight.

    I think you would expect a better CMM from a software developer.
     
  11. mcl

    mcl Legend

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    Then you more than anyone should understand the importance of completely-specified design before a line of code is written. The importance of multiple rounds of code review. The importance of QA, and multiple rounds of back-and-forth between QA and the development team long before the code ever sees the light of day.

    A good friend of mine currently does development work on the ISS environmental systems, so I'm well-acquainted with the NASA development process, and I'll find it difficult kissing your a**, what with you in the posture to pucker up to mine and all.
     
  12. lguvenoz

    lguvenoz Icon

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    Aug 22, 2006
    Agreed. Anyone with any insiders at D* want to comment?? Or seek unofficial comment from inside D*??

    Or better yet, someone with no access to MPEG4 content want to comment on their experience (as I've seen numerous comments from people on this forum that are HAPPY with their HR20s dreading the day they get MPEG4 locals)???
     
  13. LameLefty

    LameLefty I used to be a rocket scientist

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    Nice strawman argument. What *I* know to be good development processes has nothing whatsoever to do with what D* may or may not have done, nor (back to the original topic) whether mishandled overruns, exceptions and error conditions can result in corrupted recordings and playback of even MPEG2 streams. And the answer to that is, clearly, yes.

    So as I was saying, a little more to the left please. That cheek is feeling left out. :)
     
  14. PoitNarf

    PoitNarf New Member

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    hmmm
     
  15. mcl

    mcl Legend

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    What YOU know to be good development processes and what you EXCUSE from D* is a major disconnect.
     
  16. RAD

    RAD Well-Known Member

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    Your age is showing. How about a B37 when the drive is full?
     
  17. btmoore

    btmoore Hall Of Fame

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    While I was in my wayback machine, SOC7 ABEND seemed more appropriate due to question of "Is MPEG4 Our Real Issue"

    If it is not water cooled it is just a toy.

    Now I am going back to work on my VTAM configs I need to get my PU and LU definitions in place so my 3174 can talk to my 3745. Wonder if I can stream mpeg4 over it, the damn hr20 needs a TIC?

    Ouch, that actually hurt to yank out of my head, I thought I killed those brain cells 20 years ago, at least I have been trying to.
     
  18. RAD

    RAD Well-Known Member

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    Maybe if you're running 16Mbps with early token release and the ring isn't too busy. It might also help if you had the 900 frame on the 45 for the TIC.

    Ouch! I thought the beer got those ages ago also. Ah, the good old 3174, who else but IBM could get away with charging a few thousand dollars for a 1MB stroage card? I did rack in a bunch of overtime on those puppies due to microcode issue, RTP and I were good friends.

    Sorry for the off topic remarks, just nice to meet someone that worked with the old SNA world.
     
  19. mckeemike505

    mckeemike505 AllStar

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    For me alot of the problems are on the MPEG4 channels which have a lower signal strength. I know that it shouldn't matter but when you only have 35 or 50 on a sunny day and the wind blows or it sprinkles your show freezes or reciever locks up. One other thing I would like to note we have the living room recording shows from the HD channels in New York because of the unreliablity of the HD locals maybe that is why the living room receiver is working so well. I have been trying to record everything in the bedroom on the HD locals. Thoughts???


    Mike
     
  20. ktabel01

    ktabel01 Legend

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    MPEG 4 is not the issue. I don't get the MPEG 4 channels, and have the 771 error.
     
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