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Test drive at BestBuy, have some questions for owners

Discussion in 'LG Internet TV' started by drhill, Jul 29, 2013.

  1. drhill

    drhill Member

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    I just got back from a quick test drive of a 47" GA64000 at best buy and it went very well except one thing. Every file with TrueHD,DD, or DTS* played fine, and that's with MPEG2, VC1, and H264. But files that have PCM audio either stuttered something fierce or didn't play. Now the unit had Avia media player, but I use Plex at home. Has anyone gotten PCM audio to play fine? I used a VC1 and H264 clip.

    Also, I tested a 3d MVC H264 clip. It played in 2d perfectly which is great. Anyone know if I can get the unit to play in 3d as well, since it's a 3d file?

    Finally has anyone gotten any apps to play 24p clips? Almost all of my video is 24p so I was hoping it wouldn't have to convert to 60hz.
     
  2. Fomol620

    Fomol620 Active Member

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    there is no such thing as a 24Hz TV. all TV's are 60Hz, so every TV will be converting 24p to 60p. the question is whether the TV can PROPERLY convert 24hz to 60hz.
     
  3. drhill

    drhill Member

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    I never said 24hz. I said 24p. Not all tvs are 60hz. These LG tv's are 120hz or 240hz.

    Converting 24p to display at 60hz would be bad. DVDs already do that for you at a 2:3 cadence. I want the 24p to be properly displayed at 120hz (24p x 5) or 240hz (24p x 10).
     
  4. Fomol620

    Fomol620 Active Member

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    24p and 24Hz is the same thing. 24p refers to 24 frames PER second, 24Hz refers to 24 frames per second as well. For example, when you go to the movie theater, the movie you watch is 24Hz/p (however you want to write it), meaning it is shown to you at 24 frames per second which can be written as 24p or 24hz.
    i agree not all TV's are 60Hz, but there is no TV that is 24Hz/24p.
    Most TV's will convert a 24Hz incoming signal (if your BD/DVD player is setup to output at 24p/Hz) to 60Hz using 2:3 pull down or 5:3 pull down. vary rarely do you see a TV converting 24hz to 60hz by the methods you explain (24x5 or 24x10)

    also just an FYI...Most LG TV's (especially the 120hz) usually still use native 60Hz panels, but achieve 120Hz through backlight scanning. the 240Hz TV would probably use a 120Hz panel + Backlight scanning to achieve 240Hz.
     
  5. drhill

    drhill Member

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    Didn't exactly read what I wrote did ya? Either way, and don't take this the wrong way, you are no help since you didn't have answers to my questions and you told me things I knew before I got my retired xbr1 many years ago. ;-)
     
  6. Fomol620

    Fomol620 Active Member

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    i guess you really dont understand the concept, although your comments suggest a high technical understanding. maybe your not wording it properly.

    in any case to answer your questions, yes the LG GTV's do support PCM audio, maybe that TV at the store had an issue or needed a software update
     
  7. drhill

    drhill Member

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    What kind of content have you tried the PCM audio with? I used a VC1 and a H264 clip. I know LG's spec claim they support it, but Sony fudged their specs a bit too on the GS7/8. The hardware is more than capable of supporting it, but the firmware is limiting (thanks Google/Sony!).

    24p and 24hz are not exactly the same thing. One is an encoding rate, the other a display's refresh rate. There have been projectors and plasmas before the 120hz+ TVs came about that would properly display 24p content @ 72hz, which is what most movie theater projectors run at I believe. It's a bad sign when a 120hz tv converts a 24p signal to 60hz and then does blank screen insertion. Either cheap hardware, lazy programmers, or management hiding features to up sell other models. If a 240hz tv did such a a thing it would be an act of war.
     
  8. Fomol620

    Fomol620 Active Member

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    i will try and find a video file with PCM so that i can test with my G@ and GA6400...

    very good to read an explanation. makes sense. to my knowledge there is no TV that displays at 72Hz, although i know european TV, sun at different Hz 50hz or something? most, if not, all TV will run at 60Hz or multiples of that (120, 240, 480). the way any TV displays an incoming 24p signal is using 3:2 or 5:3 pull down, or cadence at you put it. there is no TV that will display at 24x5 or 24x10....
     
  9. drhill

    drhill Member

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    Yes Europe (PAL) runs at 50hz. LG does have a plasma that seems to display at 72hz (LG 50PN6500: 50 inch Class 3D capable 1080P Plasma TV with Smart TV (49.9 inch diagonal) | LG USA) since the specs list 3:3 pulldown.

    As far as LCD. Here's an amazon link: Amazon.com: Panasonic VIERA TC-L55WT50 55-Inch 1080p 240Hz 3D Full HD IPS LED TV: Electronics

    If you scroll down to the tv line comparison chart you will find a line for "24p Cinematic Playback". The checked tv's won't do a 3:2 pulldown. The unchecked tv's accept 24p do 3:2. I have a one of the those tv's that do 3:2 as it is a 60hz tv. As far as other tv's I know companies used to prominently display 24p for their higher end models when the 240hz tvs were new, but now it seems they don't list it as a selling point anymore. I doubt support would be dropped though.

    If you want some sample clips to play with I can send you a dropbox link of samples I use to test. Good to have for testing device capabilities.
     
  10. Fomol620

    Fomol620 Active Member

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    that would be great thank you!
     

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