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DIRECTV Transponder Map: New Data 3/30/2011

Discussion in 'DIRECTV Tips and Resources' started by Gary Toma, Mar 23, 2011.

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  1. Mar 30, 2011 #21 of 108
    Sixto

    Sixto Well-Known Member

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    That 30-40Mbps is available to every receiver concurrently, but you do cause me to maybe totally re-think my original thought.

    Every receiver would not see the full bandwidth full-time unless it specifically tuned to the transponder, which would limit the effectiveness. This might negate the math listed above.

    Maybe it's just a new way of pushing content overnight.

    Certainly is fun thinking about this. :)
     
  2. Mar 30, 2011 #22 of 108
    doctor j

    doctor j Hall Of Fame DBSTalk Club

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    TSReader screenshot variable but 30.5 to 31.9 Mbit/sec

    Doctor j
     

    Attached Files:

  3. Mar 30, 2011 #23 of 108
    doctor j

    doctor j Hall Of Fame DBSTalk Club

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    Code:
    Network A007h
          * 	 1901	 22|00		03AC	03AD		tv:dtv2274.ch
          * 	 1902	 22|00		03AC	03AD		tv:dtv2275.ch
          * 	 1903	 22|00		03AC	03AD		tv:dtv2276.ch
          * 	 1904	 22|00		03AC	03AD		tv:dtv2277.ch
        *DTV	 1001	 17|00		0320	0321		tv:9980.ch
        *DTV	 9981	  1^10	124	1800	1802		PUSH - MPEG4 HD MoviesNow	tv:9981.ch
        *DTV	 9982	  1^10	124	1800	1802		PUSH - D11 MPEG4 SD	PUSH-D11 MPEG4 SD	tv:9982.ch
        *DTV	 9983	  1^10	124	1800	1802		PUSH - R22 MPEG4 SD	PUSH-R22 MPEG4 SD	tv:9983.ch
        GAME	 9990	 22		03AC	03AD	
        *DTV	 9931	 21!15	 20	1820	1822		PUSH - MPEG4 D12	PUSH 21-2 (D12)	tv:9931.ch
        *DTV	 9932	 21!15	 20	1830	1832		PUSH - MPEG4 D12	PUSH 21-3 (D12)	tv:9932.ch
        *DTV	 9933	 21!15	 20	1840	1842		PUSH - MPEG4 D12	PUSH 21-4 (D12)	tv:9933.ch
        *DTV	 9934	 21!15	 20	1850	1852		PUSH - MPEG4 D12	PUSH 21-5 (D12)	tv:9934.ch
        *DTV	 9935	 21!15	 20	1800	1802		PUSH - MPEG4 D12	PUSH 21-6 (D12)	tv:9935.ch
        *DTV	 9936	 22!15	 21	1810	1812		PUSH - MPEG4 D12	PUSH 22-1 (D12)	tv:9936.ch
        *DTV	 9937	 22!15	 21	1820	1822		PUSH - MPEG4 D12	PUSH 22-2 (D12)	tv:9937.ch
        *DTV	 9938	 22!15	 21	1830	1832		PUSH - MPEG4 D12	PUSH 22-3 (D12)	tv:9938.ch
        *DTV	 9939	 22!15	 21	1840	1842		PUSH - MPEG4 D12	PUSH 22-4 (D12)	tv:9939.ch
        *DTV	 9940	 22!15	 21	1850	1852		PUSH - MPEG4 D12	PUSH 22-5 (D12)	tv:9940.ch
        *DTV	 9941	 22!15	 21	1800	1802		PUSH - MPEG4 D12	PUSH 22-6 (D12)	tv:9941.ch
        *DTV	 9942	 23!15	 22	1810	1812		PUSH - MPEG4 D12	PUSH 23-1 (D12)	tv:9942.ch
        *DTV	 9943	 23!15	 22	1820	1822		PUSH - MPEG4 D12	PUSH 23-2 (D12)	tv:9943.ch
        *DTV	 9944	 23!15	 22	1830	1832		PUSH - MPEG4 D12	PUSH 23-3 (D12)	tv:9944.ch
        *DTV	 9945	 23!15	 22	1840	1842		PUSH - MPEG4 D12	PUSH 23-4 (D12)	tv:9945.ch
        *DTV	 9946	 23!15	 22	1850	1852		PUSH - MPEG4 D12	PUSH 23-5 (D12)	tv:9946.ch
        *DTV	 9947	 23!15	 22	1800	1802		PUSH - MPEG4 D12	PUSH 23-6 (D12)	tv:9947.ch
        *DTV	 9948	 24!15	 23	1810	1812		PUSH - MPEG4 D12	PUSH 24-1 (D12)	tv:9948.ch
        *DTV	 9949	 24!15	 23	1820	1822		PUSH - MPEG4 D12	PUSH 24-2 (D12)	tv:9949.ch
        *DTV	 9950	 24!15	 23	1830	1832		PUSH - MPEG4 D12	PUSH 24-3 (D12)	tv:9950.ch
        *DTV	 9951	 24!15	 23	1840	1842		PUSH - MPEG4 D12	PUSH 24-4 (D12)	tv:9951.ch
        *DTV	 9952	 24!15	 23	1850	1852		PUSH - MPEG4 D12	PUSH 24-5 (D12)	tv:9952.ch
        *DTV	 9953	 24!15	 23	1800	1802		PUSH - MPEG4 D12	PUSH 24-6 (D12)	tv:9953.ch
    Channels: 32
    File: PID_0x0828.bin
    Doctor j
     
  4. Mar 30, 2011 #24 of 108
    Sixto

    Sixto Well-Known Member

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    Thought we couldn't do D12 MPEG4 measurements?
     
  5. Mar 30, 2011 #25 of 108
    P Smith

    P Smith Mr. FixAnything

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    We knows all Ka tpns' SR (30Msps), FEC (2/3, 4/5), QPSK (some 8PSK), by formula we could calculate ... It should be pretty close to real (I would say with no more then 10% error).

    Calculating .. D12 tp21,22,23,24: 30Msps, LDPC, QPSK, 2/3, 188 bytes per packet: ~39 Mbps.
     
  6. Mar 30, 2011 #26 of 108
    georule

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    Well, sure, it would be available to every DVR concurrently. But the DVR's are individually addressable, so any DVR not being addressed in the packets lets those bits disappear into the ether. But that's also why it is so incredibly inefficient to use expensive satellite bandwidth that way.

    When you push a selected group of 12 movies to everyone's DVR reserved space, that's one thing. But unless I'm missing something (and I surely could be) I don't see any way that individual DVR addressing by satellite makes sense from a price/performance perspective. And the amount of space required on the DVR's to preload more than dozens (rather than hundreds)doesn't make sense either.

    If its just a way to push overnight those 12 or so pre-loads to the reserved space, I can't imagine you'd need more than a handful of channels (say, one transponder's worth?) for that. 30mbps hitting everyone simultaneously could surely load as much turnover as 12 movies max at a time (which don't all rotate out simultaneously) would take.
     
  7. Mar 30, 2011 #27 of 108
    P Smith

    P Smith Mr. FixAnything

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    If, by any chance, old BINs are stored, we could look back ;).
     
  8. Mar 30, 2011 #28 of 108
    Sixto

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    Oh yes, I wasn't assuming that anything would be DVR specific. Just a way to continually transmit the highly desired content for everyone, and a UI on the DVR to select what you want, and it would be downloaded the next time it's in the stream.

    This might also just be a new way to push content to the reserved DVR area while bandwidth is plentiful, instead of taking down Cinema HD during the night to do it.
     
  9. Mar 30, 2011 #29 of 108
    P Smith

    P Smith Mr. FixAnything

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    See in post#23: 18xx ...

    Interesting: 6 PUSHes per transponder.
     
  10. Mar 30, 2011 #30 of 108
    georule

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    Ohhhhhh. Alright, now we're on the same page. Interesting. Just loop the content and if you've requested it, you get it at full blast next time it comes around. Hmmm, I'll have to think about that one a bit more.

    Presumably it would burst at faster than real time. . . I wonder if it would even require a tuner to be tied up for receiving it? Internet VoD doesn't require a tuner tie-up, so presumably not. In fact, I often tell people that's one reason they want internet VoD --it essentially gives you "another tuner" if you run into scheduling conflicts.
     
  11. Mar 30, 2011 #31 of 108
    Sixto

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    It looks like the channels are 9931-9953. Just looked at a few of the "watch now" recordings and found 9981 used so far, which is on D11.

    Always wondered how the push content got to the reserved space. Thought they took down Cinema HD during the night, but now they have lots of bandwidth on D12. They could have 20+ channels available every night.
     
  12. Mar 30, 2011 #32 of 108
    georule

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    Y'know, my wife and I watch the pre-loads kinda semi-regularly. And sometimes just do a internet VoD download. We've never, ever, watched one of the pre-scheduled "it'll be on at this time" PPV. Can you record those and watch them at your leisure? I've never tried.

    Changing the UI so you can see when a "loop" of stuff is coming past could significantly cut down on the "eh, I don't want to wait 24 hrs for it" problem. If you're in "Sixto Loop Mode" then 1/2 the content will be going by in 12 hours. . . .1/4 in the next 6 hours, etc.

    Other people have different processes, but my wife and I usually discuss in the afternoon if tonight will be "movie night" and check out the options. . . .
     
  13. Mar 30, 2011 #33 of 108
    Shades228

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    P brought this up actually with reference to firmware updates and it was about compression not encoding. For instance a push like this could be compressed using even a tar.gz format and then expanded on received for example. That however would not allow watching in real time in that compression format unless they sent a bulk file and then appended it. Seems more complicated than it would be worth.



    Well if say the average file is 5GB and there is a 10% error rate, or overhead, then they could set up 10 per transponder at 3mbps. However at that speed they could almost be watched real time. So if the goal is non real time they could drop it to 15 at 2mbps which would give you a show in about 5 hours.

    At 30mbps they could cycle 1 show every 24 minutes or so though. So if they used 5 transponders they could cycle through about 13 shows an hour on average. So that would be 360 shows in a day but I could see people getting upset if they missed their "window" and had to wait until the next day. Unless they staggered the show download times by a couple of hours.


    They could also use transponders that are reserved for sports programming as well during their downtime to push at night as well.
     
  14. Mar 30, 2011 #34 of 108
    Sixto

    Sixto Well-Known Member

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    This is like one of those movies where they discover a hidden treasure. Lots of possibilities as we dig further!

    It's also interesting to see the other push feeds on D11, which explains some other lingering questions from years ago.
     
  15. Mar 30, 2011 #35 of 108
    Indiana627

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    What a fraking waste.
     
  16. Mar 30, 2011 #36 of 108
    georule

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    Is tar.gz that much more efficient than mpeg4 to make it worthwhile?

    If I were to guess along these lines, I wouldn't rotate everything on an equal weighting. They've got to know what is high request and what isn't. So I'd weight the rotation that way too. "Sucks to be you" for a lower weighting show, but there ya go.

    Thing is, a lot of current internet VoD is *not* ppv. So if this is a revenue enhancer, you'd think it'd have to be aimed at ppv exclusively to make it worthwhile.

    You should be able to design a UI so that if the customer is looking at a given program it could tell him "two hours. . . 4 hours. . . 12 hours. . ." whatever, at the time he is considering requesting it. . . .
     
  17. Mar 30, 2011 #37 of 108
    P Smith

    P Smith Mr. FixAnything

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    Nope.
    Just try to use it against any MPEG stream - no gain at all.
     
  18. Mar 30, 2011 #38 of 108
    Sixto

    Sixto Well-Known Member

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    In case we didn't say it already P. ... congrats on the discovery!

    Always say I learned it all from you .. the master ... and we continue to learn. :)

    Now we just need to figure out what channels 9931-9953 are used for. :)
     
  19. Mar 30, 2011 #39 of 108
    Shades228

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    They could use it for anything though. Since we're just discovering this who knows what the use is for right now. They could use some to do premium VoD to push for people to subscribe to Premiums. I'm sure some will be PPV as well.
     
  20. Mar 30, 2011 #40 of 108
    P Smith

    P Smith Mr. FixAnything

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    In gct's XLS I see more: 9976-9983 at 99W D11 tp1.

    BTW, could someone check signal level for the tp1 ? At my place it's jumping from 0 to 80.
     
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