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During transition: will channel 73 be MPEG2 and 206 MPEG4?

Discussion in 'DIRECTV General Discussion' started by tkrandall, Jul 26, 2008.

  1. syphix

    syphix Hall Of Fame

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    Only the engineer's (those who subscribe to Dish Network) know. :)

    And us (hopefully) within the week. :D
     
  2. evan_s

    evan_s Hall Of Fame

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    I believe you are right about that. D* leases the sat to them and they lease it back to D* for now. Either way it seems clear that 72.5 isn't in D*'s long term plans.
     
  3. Tom Robertson

    Tom Robertson Lifetime Achiever DBSTalk Club

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    I'm willing to bet some engineers in El Segundo know as well... :)
     
  4. Argee

    Argee Legend

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    So, when the digital transistion takes place in Feb., will that not free up a lot of the SD spotbeam slots as LIL's shut off their analog feeds?
     
  5. Upstream

    Upstream Hall Of Fame

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    Argee -- No. All DirecTV SD and HD transmissions are currently digital. When OTA converts from analog to digital, all DirecTV SD and HD transmissions will still be digital. And they will need to continue their digital SD transmissions to serve their SD customers. The only way DirecTV could feasibly eliminate their SD transmissions would be to replace all of their SD receivers and DVRs with HD receivers and DVRs.
     
  6. Herdfan

    Herdfan Well-Known Member

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    Being a 720p station, probably not much different. DHDT, HDNet/Movies and HBO/SHO will be a much different, and better;) , story.
     
  7. kramerboy

    kramerboy AllStar

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    :confused:
     
  8. donkeylips

    donkeylips Legend

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    Hi all, newb here! Ive been an active reader of these forums for a long time, first post though. Im a new sub to D* HD and Im super happy with the MPEG-4 channels, and super unhappy with ALL the MPEG-2's.

    To me when viewing highlight clips of like sporting events the difference in the HD quality between ESPNNews HD (MPEG-4), and ESPN/ESPN2HD (MPEG-2) is like night and day. The MPEG-4 is so much nicer to look at to my eyes. I personally expect a noticeable improvement when the ESPN's are transitioned over to MPEG-4.
     
  9. Argee

    Argee Legend

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    so, let me get this straight. Right now most locals have two feeds. One is SD and the other is digital and/or HD. DTV relays both these feeds up to the birds to spotbeam down to the LIL markets. Yes, I do know DTV does a digital translation of the analog signal they get.
    My question is that after Feb, the local stations will only broadcast one feed. Thus, DTV will still break that one feed in to two down streams? I thought that they would only need one download stream for each LIL station and the DTV receiver would do any converting to those who need it thus eliminating the need for two seperate spotbeam feeds to LIL markets.
    You are saying that the SD receivers cannot convert the HD signal for SD/non digital 4x3 sets?

    My bad, I plain forgot the entire MPEG2/4 part of this equation.

    So, whenever DTV gets all the MPEG 2 receivers replaced they will free some spotbeam bandwidth and at the same time be able to use MPEG 4 on the SD signals on the 101 birds and open a bit there as well.
     
  10. Doug Brott

    Doug Brott Lifetime Achiever DBSTalk Club

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    Sounds like you've got it pretty much. While OTA transmissions of analog signals must stop next February, digital transmissions will be allowed to continue. Those digital transmissions can be HD or SD but they must be digital.

    DIRECTV, I'm sure, is furiously making arrangements to get any agreements and/or equipment in place to accommodate the switch .. especially in some smaller markets. This could be a fixed line between station and DIRECTV or it could be OTA to a central point-of-presence (POP). From there DIRECTV would have a fixed line back to their uplink facility. The digital signal will be broadcast to you in many cases in both SD and HD just as you would expect. It's the "behind the scenes" stuff that will be different.

    It is also likely that DIRECTV will simply take an HD Feed and down convert it to SD for retransmission, although that is not necessarily true. In any event, SD will be on DIRECTV for a long time. The only thing February will bring is that over-the-air transmission of analog TV signals will stop. If you don't have or need and antenna, then that will not affect you at all.
     
  11. crawdad62

    crawdad62 Godfather

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    To my completely uneducated head in this matter that makes the most sense. Whether or not it makes to DirecTV is another matter.
     
  12. ktabel01

    ktabel01 Legend

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    They can shut off the MPEG2 feeds when they choose to lean on local installers to pick up the pace of MPEG4 upgrades, especially MDU providers.
     
  13. Doug Brott

    Doug Brott Lifetime Achiever DBSTalk Club

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    Way too many Legacy receivers out there .. It wouldn't surprise me if MPEG2 lasted another 10 years.
     
  14. CoachGibbs

    CoachGibbs Godfather

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    Disagree about ESPN/ESPN2. I've seen them through other sources and they've always looked much better on those sources than on D*. They are bitstarved on D*.
     
  15. sdk009

    sdk009 Icon

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    During the NBA playoffs, a game ran over and there was a short period of time when the same game was on TNT (MPEG-2) and TBS (MPEG-4). TBS's picture was far superior than TNT's and a perfect side-by-side example of how much better the MPEG-4 transmission was.
     
  16. Herdfan

    Herdfan Well-Known Member

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    TNT is 1080i which is not only bitstarved, but also downrezzed. Not much to downrez on a 720p channel.

    So while there may be some additional bitrate for an MPEG-4 ESPNHD resulting in better PQ, I don't think there is going to be the dramatic difference we have seen with the 1080i channels.
     
  17. DodgerKing

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    NESN and YES, two of pretty much the only RSNs in 1080i, have a far superior PQ than any of the other 720p RSNs.
     
  18. Herdfan

    Herdfan Well-Known Member

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    That is a 1080i v 720p discussion. MPEG-4 is not going to make 720p look like 1080i.

    The point I am trying to make is that MPEG-2 1080i is 1)downrezzed and 2)bitstarved so that when it makes the jump to MPEG-4 it benefits two ways.

    MPEG-2 720p is also bitstarved, but most likely to a lesser degree and it is not downrezzed. So the upgrade to MPEG-4 of a 720p channel will not show the huge difference that 1080i did going from MPEG-2 to MPEG-4.
     
  19. paco1986

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    I have to agree with you. When viewing highlights on ESPNEWS HD of ESPN HD broadcasts, the PQ is much better. So if the comparison is valid, ESPN/ESPN2 HD (MPEG-4) should be much better.
     
  20. Herdfan

    Herdfan Well-Known Member

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    You may be right, however I am not sure using ESPN News is a valid comparison as they are shrinking the image and basically putting the same pixels in a smaller space ergo increasing resolution.
     

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