Video Asylum

"audio and video out of synch"

24.110.124.132

GTF

In Reply to: RE: Valid comments. posted by Jack G on July 12, 2007 at 05:31:49

That's not a SONY problem.
That's an HD problem.
I see that sometimes on my 34XBR and have read that it is caused my
the fact that an HD signal sometimes runs a little then the audio signal
from the STB.
You don't see that with SD because the video data stream is shorter.
It's an HD timing issue. I think! I've read that hdmi 1.3 is supposed
to eliminate this problem.
Just another example of a spec being rushed to market before all the bugs are worked out.
We the consumer are being used as test platforms.

Follow Ups:

left out a crucial word, I believe!!!nt - Duilawyer 19:07:05 07/12/07 (1)
.
- Don't sue me, don't sue me, don't sue me,,,,lease - GTF 16:51:06 07/13/07 (0)
  :-)
  
  Just kidding.
  
  Oh wait! I miss those tapes...
I don't have the problem, that I've noticed - Jack G 09:02:41 07/12/07 (7)
Or I should say rarely-then its a broadcasting issue (a specific TV show may have it). Normally, I do not have issues with HD being out of sync, weather it by cable, OTA, or HD DVD/BD.
Or, my wife and I just don't see it.
Jack
- It doesn't happen all the time. - GTF 09:32:23 07/12/07 (6)
  We do see it on occasion though.
  
  It's not enough to make me want to go back to SD.
  - OK, I just assumed if was due to problems with broadcasting - Jack G 09:53:15 07/12/07 (5)
    Since we don't see it with Optical media. My wife is more sensitive to it than I am, and will not hesitate to point it out.
    Jack
    - If and when I find the articule about the timinhg issue. - GTF 10:13:56 07/12/07 (4)
      I will post it here.
      I've read about it in S&V and have seen other web site postings
      about this issue.
      It's strictly a cable TV issue and I believe satellite also.
      
      GTF
      - I see the picture stall, and start up again, in other words, the stations - Duilawyer 19:10:02 07/12/07 (3)
        
        In Reply to: RE: If and when I find the articule about the timinhg issue. posted by GTF on July 12, 2007 at 10:13:56
        
        hard drive slows, or goes into a cache, and the picture then starts back up. On cable!! MSNBC is the worst offender, PBS second. I can see faces that smear when they move.
        
        NBCHD The station of mediocrity. - GTF 05:40:14 07/13/07 (0)
        
        In Reply to: RE: I see the picture stall, and start up again, in other words, the stations posted by Duilawyer on July 12, 2007 at 19:10:02
        
        They are the very worst at broadcasting in HD.
        Sometimes they are so bad we have to change the channel to their SD station
        so we don't miss the program.
        I've had to record some of their programs on the DVR using both the
        HD and SD channels to be assured we will be able to see the program!
        
        GTF
        
        Out of Synch caused by digital processing at station and at set. - ruxtonvet 21:47:57 07/12/07 (1)
        
        In Reply to: RE: I see the picture stall, and start up again, in other words, the stations posted by Duilawyer on July 12, 2007 at 19:10:02
        
        Digital signals are processed at the station and at your set. The more the processing the more the delay. You will see and hear this even if you use an antenna to get HD signals. Some at home processors outside of the TV can delay the audio to be more in synch with the video but at best this is an approximation. Sony says this is normal and not their problem. I know of no TVs that are trying to correct this within the TV.
        
        The lag time is usually small though - Jack G 04:49:32 07/13/07 (0)
        
        In Reply to: RE: Out of Synch caused by digital processing at station and at set. posted by ruxtonvet on July 12, 2007 at 21:47:57
        
        around the level of detection which I was told was about 30 milliseconds. Obviously, if there is more processing there will be a longer lag. Some receivers and DVD players have a delay function. Most TVs don't. No, that's not Sony's problem.
        Jack

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