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MRV Quality

Discussion in 'DIRECTV - Coax Networking (private)' started by dave29, Jun 22, 2009.

  1. Jun 23, 2009 #41 of 104
    litzdog911

    litzdog911 Well-Known Member

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    MRV seems about the same on my DECA-enabled DVRs compared with my wired LAN DVRs. Still a few hiccups every several minutes.

    But my HR21-200 that was networked via a Linksys WGA600N WLAN adapter now works MUCH better since I switched it to DECA. With the WGA600N you really couldn't use MRV without severe pixelation, breakups, etc. I blamed the WLAN data rate. Now, with the DECA, it's just like my other wired LAN DVRs.
     
  2. Jun 23, 2009 #42 of 104
    dettxw

    dettxw MRVing

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    Had a first that I recall last night.
    Was watching an mpeg4 recording (True Blood) served by the HR22-100 to the Master BR HR20-700 with both being DECA-connected.
    Two or three times when the inevitable non-repeatable video glitches occurred the lip sync got off which was new.
    This lip sync issue could be corrected with a pause.
    Can't say that the severity of the glitches was DECA-related and would suspect not.
     
  3. Jun 23, 2009 #43 of 104
    webby_s

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    AHHHHH Thanks VOS.... After my 12 hour shift and a few brews I was a little slow! But thanks for the correction.... MPEG2.( :eek2: @ Webby :grin: )
     
  4. Jun 23, 2009 #44 of 104
    DJPellegrino

    DJPellegrino Godfather

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    H23 playing a recording form HR22
    HR22 on live TV
    HR21 on live TV
    DT2PC playing a recording from HR21

    4 streams going at the same time.
    I noticed some pixelization on the H23
    ----------------------------------------
    H23 playing a ecording on the HR22
    HR22 playing a recording from HR21
    HR21 on live TV
    DT2PC would not play with a 503 error.
    Stopping HR22 MRV, went to live , DT2PC played from HR21

    Did not notice any pixelization.
    But I was running back and forth to each of the rooms. I don't run as fast as I used to...:nono2: :grin:
     
  5. Jun 24, 2009 #45 of 104
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Without going into too much detail (will keep that for the First Look)....

    ...having migrated from a totally wireless network over to one wireless device and DECA cloud....

    All I can say for now is....:):):):):):):):):):)
     
  6. Jun 24, 2009 #46 of 104
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Having migrated from a totally wired network, all I can say is: zzzzzzzzzzz [SOS]. :( :lol:
     
  7. Jun 25, 2009 #47 of 104
    hdtvfan0001

    hdtvfan0001 Well-Known Member

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    Overall..that seems to be the consensus////DECA MRV is very much the same as a fully wired network setup overall....but in the case of moving from wireless or powerline....a very noticeable leap ahead.

    It would seem that there are still opportunties for the MRV firmware code to be improved, as you;'ve pointed out previously.
     
  8. Jun 25, 2009 #48 of 104
    DJPellegrino

    DJPellegrino Godfather

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    Yea, I think when this is available to the public, it would be best for 2 groups of people, the wireless group, and the ethernet(less) group. The latter will benefit the most as now they can join the ranks of 'connected' without the hassle of running ethernet or much more coax. At some point, and Tom alluded to this early on, a SWM(less) setup. With the filter in place, we already appear to be not using the SWM, just the SWM functionality within the receivers. That can probably be taken care of with a software enhancement.

    I know I dreaded the thought of going into the attic to try and run ethernet, waist deep in blown in insulation. That's what stopped me from doing it and going wireless.
     
  9. Jun 25, 2009 #49 of 104
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    I think you may have misconstrued his meaning.
    DECA must be on a SWM system to function.
    1. Ka-lo must be converted to allow the DECA frequencies not to interfere.
    2. The system must be a splitter based system, since a switched system doesn't connect the receivers/DECA together.
    So while the SWM is functioning independently of the DECA, DECA needs a SWM to function.
     
  10. Jun 25, 2009 #50 of 104
    Tom Robertson

    Tom Robertson Lifetime Achiever DBSTalk Club

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    In theory, a DECA cloud could be constructed on empty coax with no SWM or sat. signals. All the DECAs would need PIs as the receivers won't power the DECAs without SWM.

    Cheers,
    Tom
     
  11. Jun 26, 2009 #51 of 104
    dettxw

    dettxw MRVing

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    I only had a little time last night for testing so I thought I'd take a specific look at some mpeg2 HD OTA via MRV in light of the comments quoted.

    Server: LR HR20-700 connected to Linksys Gigabit switch wired to Linksys WRT600N router. DECA network connects at this same switch.

    Client: MBR HR20-700 connected via DECA.

    Watched an episode of Supernatural which would be the worst-case HD OTA for me, 1080i from 34-1 The CW. Nothing else going on with the DVRs or network.

    When the video was playing well it looked great. However, the non-reproducible pauses/pixelation/breakups occurred randomly and often - sometimes every few minutes and sometimes many times a minute, and much more often than mpeg4 stuff. I rewound at every occurrence to make sure that there wasn't a glitch in the recording and that all the pauses/pixelation/breakups were indeed non-reproducible.
    There was noticeable delay coming out of trickplay with two or three or four "false starts" until the video played smoothly once again. But at least you can see fast-forwards or 30 second slips occurring.

    So this confirms my recollection of how OTA HD MRV worked for me.
    Hoping that tonight's CE addresses this pausing/pixelation/breakup issue.
     
  12. Jun 26, 2009 #52 of 104
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Have you tried any SAT MPEG-2?
    I still have a Discovery Planet Earth recording I use for my MPEG-2 testing.
    I may need to revisit this.
    MRV has been around for so long [with my H21] and at first nothing would play well.
    After many months, I tried SD & HD MPEG-2 and was surprised they worked well.
     
  13. Jun 26, 2009 #53 of 104
    dettxw

    dettxw MRVing

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    You know, I think that there may be a couple of old recordings from the satellite using mpeg2 still around on the DVRs. I'll try those.
     
  14. Jun 26, 2009 #54 of 104
    69hokie

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    All my receivers had been previously on wired network connected to either the gigabit rounter or gigabit switches. Haven't seen any difference as far as video or audio performance...still get occasional stutters, not frequent, but stutters none the less, almost always on HD MPEG-4 (don't know about MPEG-2). Occasional stutters occur between ethernet receivers and ethernet receivers, between DECA cloud and ethernet receivers, and between DECA cloud to DECA cloud receivers. So far, the DECA cloud seems to work just fine. No apparent performance ++++'s or -----'s from my existing network from prior to installation.
     
  15. Jun 26, 2009 #55 of 104
    dettxw

    dettxw MRVing

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    Found an older HDNM mpeg2 recording of The Last Picture Show. It was filmed in B&W so that may make for a lower bit rate.

    Server: MBR HR20-700 connected via DECA.

    Client: H21-200 connected via DECA.

    Had two unreproducible glitches in 39 minutes (I'll watch the rest later).
    So pretty good, but not glitch free.
     
  16. Jun 30, 2009 #56 of 104
    webby_s

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    This doesn't have anything really to do with quality as it does with reading each HR->HR->H.

    So here is what I did today... I moved my H21 from my existing "entertainment cabinet" to the garage. I HAD a 50" composite to my 15in mini flat screen out there and instead strung 50" RG6 cable (through the attic) and moved my H21 out there. (with MRV why do I need three IRD's for 2 main tv viewing areas now, right)

    So now to the meat of the story: I obviously reset the H21 and it didn't find both HR's, only one. So I did a bunch of network setups and so on to no avail and finally decided to reset the HR that did show up on the list. Kaboom (ode to Billie Mays!) the HR showed up but ouch, the other HR now was missing. When come to find out after reseting the missing HR, it was now missing on the other HR. Reset everything and now all are showing up on all HR's & H21

    This is getting confusing but I think it may be a DECA issue but am not completely sure. Could be MRV in general. Why do I say I am not completely sure? Because I am still on last weeks CE!!!!!! Why... because I had to get my fishing in over the weekend and was up at the cabin with the family.... I know, I know, what kinda excuse is that, but I figure I should state the issue I have had since moving the H21!:grin: I wanted to move things around and test things differently for the sake of testing!

    So a couple of resets have helped. Thoughts?
     
  17. Jun 30, 2009 #57 of 104
    veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    The old CE caused me to HAVE TO reset every STB to get them all playing nice, so I don't think this is a DECA problem. For that matter, I've reset my HR21, a couple of times, and my H21 more than that, this week and not had any problems with both my HR20s not being reset.
     
  18. Jun 30, 2009 #58 of 104
    webby_s

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    Good to hear VOS! I will be around this weekend. So here's hoping.
     
  19. Jul 5, 2009 #59 of 104
    dettxw

    dettxw MRVing

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    Nov 21, 2007
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    Post-032F watched a couple more worst-case HD OTA 1080i mpeg2 recordings from KOCB 34-1 The CW.

    Client: LR HR20-700 connected to Linksys Gigabit switch wired to Linksys WRT600N router. DECA network connects at this same switch.

    Server: MBRR HR20-700 connected via DECA.

    Frequency and severity of the non-reproducible pauses/pixelation/breakups was down to mpeg4 levels. Audio was not usually affected enough to cause me to rewind to see what was said.
    So better, can't say for sure that 032F was the cause of the better playback experience, but I'm hopeful.
     
  20. Jul 5, 2009 #60 of 104
    dettxw

    dettxw MRVing

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    Well, watched today's recording of Merlin (OTA HD 1080i KFOR 4-1) and the experience negated the previous better MRV report.

    Client: LR HR20-700 connected to Linksys Gigabit switch wired to Linksys WRT600N router. DECA network connects at this same switch.

    Server: MBRR HR20-700 connected via DECA.

    Spent a lot of time rewinding to hear the dialogue I missed during breakups. Maybe next week.
     

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