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DirecTV National HD Listing/Maps Discussion Thread (Technical - Not Anticipation)


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#541 OFFLINE   tonyd79

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Posted 26 September 2012 - 09:12 AM

We always assumed push related ...


Thanks.
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#542 OFFLINE   Lord Vader

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Posted 26 September 2012 - 10:04 AM

Brain fart--what's linear HD? I forgot.

FAITH: I find the lack of it disturbing.

Opinions are my own but should be those of all Americans, who would be much better off intellectually, psychologically, and emotionally if that were the case.


#543 OFFLINE   Sixto

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Posted 26 September 2012 - 10:12 AM

Brain fart--what's linear HD? I forgot.

Regular HD full-time CONUS channels ... no push or anything special ...
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#544 OFFLINE   Lord Vader

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Posted 26 September 2012 - 10:13 AM

Gotcha. Thanks

FAITH: I find the lack of it disturbing.

Opinions are my own but should be those of all Americans, who would be much better off intellectually, psychologically, and emotionally if that were the case.


#545 OFFLINE   maartena

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Posted 26 September 2012 - 10:34 AM

We always assumed push related ...


I always thought it was used for insertion of local commercials on CONUS channels. They do push local commercials to my DVR, and use them on certain channels I believe.... is that done through channels/transponders you might not even be able to see? (Do they use Spotbeams for those pushes, would make sense too)
[Disclaimer] The definition of "soon" is based solely on DirecTV's interpretation of the word, and all similarities with dictionary definitions of the word "soon" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.

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#546 OFFLINE   georule

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Posted 26 September 2012 - 12:33 PM

They're starting to slip CINEHD into 1060 slots now? That's probably a positive, so far as getting further up the max curve on that theoretical 44 new HD slots.
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#547 OFFLINE   cypherx

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Posted 26 September 2012 - 03:20 PM

Is cinehd 24fps? You should easily fit 6 per TP then. Show time and Starz have been multiplexing big qty's of their movie channels for years now and I thought part of it was slightly reduced framerate.

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#548 OFFLINE   georule

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Posted 26 September 2012 - 05:08 PM

Well, looking at the map (not updated yet for this morning), the pattern that jumps out is that if there are two or more Cinema HD on a TP, that TP only has 4 channels on it, not 5.

Dunno if that's a recent phenomenon or not.
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#549 OFFLINE   JoeTheDragon

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Posted 26 September 2012 - 07:07 PM

They're starting to slip CINEHD into 1060 slots now? That's probably a positive, so far as getting further up the max curve on that theoretical 44 new HD slots.


well that or the PPV / part time feeds slots.
I want CLTV / CLTV HD on direct tv.

#550 OFFLINE   P Smith

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Posted 26 September 2012 - 07:23 PM

Well, looking at the map (not updated yet for this morning), the pattern that jumps out is that if there are two or more Cinema HD on a TP, that TP only has 4 channels on it, not 5.

Dunno if that's a recent phenomenon or not.


try again now, gct posted new revision ...

#551 OFFLINE   maartena

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Posted 27 September 2012 - 09:06 AM

Well, looking at the map (not updated yet for this morning), the pattern that jumps out is that if there are two or more Cinema HD on a TP, that TP only has 4 channels on it, not 5.

Dunno if that's a recent phenomenon or not.


Would make sense as the Cinema channels are 1080p and would require more bandwidth.
[Disclaimer] The definition of "soon" is based solely on DirecTV's interpretation of the word, and all similarities with dictionary definitions of the word "soon" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.

I am the Stig.

#552 OFFLINE   georule

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Posted 27 September 2012 - 09:33 AM

Would make sense as the Cinema channels are 1080p and would require more bandwidth.


Are they? I know internet downloads can be 1080p, but are the channels?
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#553 OFFLINE   maartena

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Posted 27 September 2012 - 09:41 AM

Are they? I know internet downloads can be 1080p, but are the channels?


As far as I know, yes. I don't use PPV much, but they show with a 1080p logo in my guide.
[Disclaimer] The definition of "soon" is based solely on DirecTV's interpretation of the word, and all similarities with dictionary definitions of the word "soon" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.

I am the Stig.

#554 OFFLINE   HoTat2

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Posted 27 September 2012 - 09:58 AM

Would make sense as the Cinema channels are 1080p and would require more bandwidth.


I've always questioned though;

Unless the increase in bandwidth is due to far less compression being applied to the 1080p Cinema PPV programs in the 100-200 ch. # range.

All other things equal, 1080i sending 540 lines at 60 fields/s requires more bandwidth than 1080p at 24 frames/s. :confused:

#555 OFFLINE   P Smith

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Posted 27 September 2012 - 10:15 AM

I've always questioned though;

Unless the increase in bandwidth is due to far less compression being applied to the 1080p Cinema PPV programs in the 100-200 ch. # range.

All other things equal, 1080i sending 540 lines at 60 fields/s requires more bandwidth than 1080p at 24 frames/s. :confused:


Nope, there are no "lines", MPEG sending base pictures [I] and updates [P,B] to them in format 1920x1080[1088] pixels. No lines ! But FR is 30 FPS for whole picture combined from two and each has have of half of full scan (odd,even) as inheritance of old analog TV standard/equipment.

#556 OFFLINE   HoTat2

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Posted 27 September 2012 - 10:52 AM

Nope, there are no "lines", MPEG sending base pictures [I] and updates [P,B] to them in format 1920x1080[1088] pixels. No lines ! But FR is 30 FPS for whole picture combined from two and each has have of half of full scan (odd,even) as inheritance of old analog TV standard/equipment.


Oh I didn't mean it was exactly conveyed in that way (line by line) in an encoded MPEG stream.

But from beginning to end 540 lines@60 fields/s from source to display must be sent for 1080i vs. 1080 lines@24 frames/s for 1080p regardless of the precise way its formated at some point in between.

#557 OFFLINE   veryoldschool

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Posted 27 September 2012 - 11:03 AM

Would make sense as the Cinema channels are 1080p and would require more bandwidth.


Are they? I know internet downloads can be 1080p, but are the channels?

I think the bandwidth between 1080i & 1080p/24 turns out to be about the same, due to the change in frame rate.
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#558 OFFLINE   Diana C

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Posted 27 September 2012 - 11:13 AM

I think the bandwidth between 1080i & 1080p/24 turns out to be about the same, due to the change in frame rate.


Exactly, 1080i/60 is 60 540x1920 fields per second, which the display deinterlaces to 30 1080x1920 fields per second. 1080p/24 is 24 1080x1920 fields per second, or actually slightly LESS data than 1080i/60.

Edited by Diana C, 27 September 2012 - 11:18 AM.
Fixed a typo

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#559 OFFLINE   Sixto

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Posted 27 September 2012 - 02:09 PM

I need to study this further ... they may have just moved the push to D10 ... now two transponders of push on D10.
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#560 OFFLINE   georule

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Posted 27 September 2012 - 05:53 PM

As far as I know, yes. I don't use PPV much, but they show with a 1080p logo in my guide.


Ah, you are correct. We sometimes watch PPV, but only the pre-downloads or internet downloads, never the PPV numbered channels. But now that you point it out to me, I see it in the guide that way as well. Tho as Titan25 points out, if it is 1080p24, then it is actually somewhat less bandwidth than 1080i, all things being equal (i.e. compressability and encoder efficiency for the content).

Edited by georule, 27 September 2012 - 06:00 PM.

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