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| uk.tech.digital-tv (Digital TV - General) (uk.tech.digital-tv) Discussion of all matters technical in origin related to the reception of digital television transmissions, be they via satellite, terrestrial or cable. Advertising is forbidden, with no exceptions. |
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#1
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Not seen any mention in these hallowed walls.
Visited the son in Sheffield Wednesday & Thursday. Saw a strange fault where the sound would suddenly go way out of lip sync on HD channels. Sometimes many seconds. I saw it on his new Sharp Freeview HD telly, but he says it happens on another one in the bedroom and others have mentioned seeing it to. It can happen on any channel, we were watching both BBC 1 HD and BBC HD. At first it seemed to coincide with opt breaks, but also happened on BBC1 HD going from afternoon TV to CBBC. He doesn't think it happens on SD channels, but he makes a point of watching HD mainly! It can't be the TVs, and I noticed a thread (3rd June, 20011; uk.tech.broadcast - Freeview HD lipsync) some while back where Glyn said "In my experience anything that processes the MPEG transport stream has the ability to screw-up the timing information carried in the service Program Clock References (PCRs), component Presentation Time Stamps (PTSs) & even possibly the video Decode Time Stamps (DTSs). At a Tx station this could include the equipment that inserts the separately delivered SI data or even just the conversion from 188 to 204 byte packets to insert the Reed-Solomon error correction. Both of these examples can involve shuffling the PID ordering around and adding delays that will involve re-stamping the timing signals." So as he gets Hull on BBC1 SD, and his aerial is horizontally polarised, I'm assuming he's on Belmont. Anyone else hear of this? Bill? Richard |
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#2
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Dickie Mint wrote:
So as he gets Hull on BBC1 SD, and his aerial is horizontally polarised, I'm assuming he's on Belmont. No. Bill |
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#3
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Bill Wright wrote:
Dickie Mint wrote: So as he gets Hull on BBC1 SD, and his aerial is horizontally polarised, I'm assuming he's on Belmont. No. I mean 'no I haven't heard about this'. I don't know why I was terse. Bill |
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#4
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Dunno about hd, but a friend of mine said it seems to happen a lot on five
US recently, but ehen we all know how quality conscious they are over there.... Brian -- Brian Gaff....Note, this account does not accept Bcc: email. graphics are great, but the blind can't hear them Email: __________________________________________________ __________________________________________________ __________ "Bill Wright" wrote in message ... Bill Wright wrote: Dickie Mint wrote: So as he gets Hull on BBC1 SD, and his aerial is horizontally polarised, I'm assuming he's on Belmont. No. I mean 'no I haven't heard about this'. I don't know why I was terse. Bill |
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#5
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Ah, I was about to ask the same thing.
Lip sync seems fine on my telly EXCEPT for "The Jury" on ITV1 HD. I can't be sure, but I think the sound is leading the picture. -- SteveT |
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#6
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Steve Thackery wrote:
Lip sync seems fine on my telly EXCEPT for "The Jury" on ITV1 HD. I can't be sure, but I think the sound is leading the picture. Sorry, I mean I can't be sure from memory. When watching, it's very obvious. -- SteveT |
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#7
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On 12/11/2011 01:49, Bill Wright wrote:
Bill Wright wrote: Dickie Mint wrote: So as he gets Hull on BBC1 SD, and his aerial is horizontally polarised, I'm assuming he's on Belmont. No. I mean 'no I haven't heard about this'. I don't know why I was terse. Bill No problem! Thanks Bill. Richard |
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#8
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On 12/11/2011 09:59, Steve Thackery wrote:
Steve Thackery wrote: Lip sync seems fine on my telly EXCEPT for "The Jury" on ITV1 HD. I can't be sure, but I think the sound is leading the picture. Sorry, I mean I can't be sure from memory. When watching, it's very obvious. Interesting. In all cases reported by my son the sound is always way behind the picture. Richard |
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#9
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On Sat, 12 Nov 2011 11:46:44 +0000, Dickie Mint
wrote: On 12/11/2011 09:59, Steve Thackery wrote: Steve Thackery wrote: Lip sync seems fine on my telly EXCEPT for "The Jury" on ITV1 HD. I can't be sure, but I think the sound is leading the picture. Sorry, I mean I can't be sure from memory. When watching, it's very obvious. Interesting. In all cases reported by my son the sound is always way behind the picture. Richard Without wishing to state the obvious, has your son tried unplugging the TV from the wall for a few minutes and starting again? This seems to be the recommended solution for all computer problems. I had sound out of synchronisation (on SD, before HD) and this was cured by starting again. |
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#10
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In message , Scott
writes On Sat, 12 Nov 2011 11:46:44 +0000, Dickie Mint wrote: On 12/11/2011 09:59, Steve Thackery wrote: Steve Thackery wrote: Lip sync seems fine on my telly EXCEPT for "The Jury" on ITV1 HD. I can't be sure, but I think the sound is leading the picture. Sorry, I mean I can't be sure from memory. When watching, it's very obvious. Interesting. In all cases reported by my son the sound is always way behind the picture. Richard Without wishing to state the obvious, has your son tried unplugging the TV from the wall for a few minutes and starting again? This seems to be the recommended solution for all computer problems. I had sound out of synchronisation (on SD, before HD) and this was cured by starting again. I've found in the past that changing channel and back again would cure it. -- Ian |
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