DVB-T FreeviewHD AC3

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geekiegeek

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#20432 26-Mar-2008 12:04

Hi all,

When I select prefer AC3 in Media Portal I get the AC3 stream - the nice blue light on my Sony 1200ES reciever lites up - but it doesnt seem to include a centre channel ??? I had the same problem when using DVBViewer also.

Any ideas?

walt12

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#118757 26-Mar-2008 12:52

The content might not be encoded into 5.1 discrete channels? Think I read somewhere that it's just being broadcast as stereo (2 channels) at present, even though it identifies as AC3 (which normally means a min of 5.1 channels).

sbiddle

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#118761 26-Mar-2008 13:09

AC3 broadcasts aren't always 5.1 - the AC3 streams will be regular stereo and only 5.1 when the there are shows that are in 5.1

geekiegeek

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#118762 26-Mar-2008 13:13

Thanks guys.

aaronaaron

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#118860 26-Mar-2008 19:13

can anyone still get the ac3 tv1 and tv2? I cant get them since today, this is in christchurch

walt12

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#118880 26-Mar-2008 20:35

Ditto here in Auckland off Waiatarua. TVNZ AC3 channels are gone with just the AAC channels remaining.

mentalinc

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#118998 27-Mar-2008 09:38

walt12: Ditto here in Auckland off Waiatarua. TVNZ AC3 channels are gone with just the AAC channels remaining.

this is a shame if they are not going to use/offer AC3 when it goes live.

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walt12

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#118999 27-Mar-2008 09:48

I think they will be AC3/DD encoded with the HE-AAC codec instead of discrete AC3 streams as we have had for the last few weeks. So once unwrapped and decoded, there will be 5.1 channels (for content that is native 5.1). I had been using the discrete AC3 streams instead of the AAC ones to avoid the still outstanding sync issues with using the Monogram AAC decoder. I guess we just have to wait for that to become more mature, or another alternative.

richms

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#119019 27-Mar-2008 11:55

I still dont know why they have chosed he-aac over aac when the sbr is designed to operate at low bitrates like 24-48kbps stereo.

Not being able to make a decent listen means I cant really judge it, but thankfully it will be better then what sky funnels down on most channels not matter what they do virtually.

My receivers dont seem to want to take a 2.0 ac3 stream and do prologic on them which may make things a PITA if I have to change between analog/pcm out and the bitstream out manually depending on if the shows in 5.1 or not.

Ah well. Perpaps its time to upgrade the dinosaurs ;)

Richard rich.ms

openmedia

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#119822 31-Mar-2008 09:44

Well TV 3 has just turned AC3 back on again. Wonder if any of the US programming will be going with with the original AC-3 audio?

Generally known online as OpenMedia, now working for Red Hat APAC as a Technology Evangelist and Portfolio Architect. Still playing with MythTV and digital media on the side.

pjamieson

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#119933 31-Mar-2008 15:09

I read somewhere that when DTT officially launches this week TV3 will be in HD, but won't have their sound upgraded until later in the year.

openmedia

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#120436 2-Apr-2008 09:32

AC3 off again on TV3.. Wish they would make up their minds.

Generally known online as OpenMedia, now working for Red Hat APAC as a Technology Evangelist and Portfolio Architect. Still playing with MythTV and digital media on the side.