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Masarius

7 posts

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#34088 18-May-2009 11:45
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Hi guys, I'm new here and a complete novice so please excuse my lack of technical knowledge :-p

Anyway, yesterday I bought a DVTS-1 satellite freeview box to get the freeview satellite feed. I'm in Dunedin live about half way a valley system and simply can't get terrestrial coverage so satellite was necessary. The previous tenants had sky installed so I set the DVTS-1 box up myself using the existing sky dish and cables. The setup went well, all channels were found and the setup menu tells me I have 83% signal (is this good?) and 100% quality.

The problem I'm having is that with many of the channels I get moderate to bad pixelisation of the image whenever there is motion on the screen. This usually happens when the camera is panning or there is a lot of movement. For example when watching the sports highlights on one news the grass of the sports field is made up of a series of mosaic like squares as the camera follows the action of the game. The same happens to people’s faces when they're talking quickly or moving fast, etc... I'm also getting a bit of artefacting on the screen.

I did a forum search before I submitted this post and I have a few questions:
- I understand that a few months ago TVNZ was doing something to the signal to try and fit more features into it's limited bandwidth and this was damaging picture quality, is this still a problem?





- I rang the manufacturer and they suggested it may be due to rain fade. It is raining at the moment and is raining a lot further north towards Canterbury, but my understanding is rain fade only really happens during harsh weather. Is this true or could the light rain over Dunedin be causing my problems?





- The manufacturer also suggested that the sky dish may be old and outdated. Like I said above it's a skytv dish, but it was probably installed at least 3 years ago. Could this be the case?





- Finally, is it possible that I have a dodgy freeview box?

Thanks!


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Asmodeus
1015 posts

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  #215569 18-May-2009 12:03
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I think you'll find the answer to your question in here



http://www.geekzone.co.nz/forums.asp?ForumId=83&TopicId=31942




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Masarius

7 posts

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  #215647 18-May-2009 17:05
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Thanks Asmodeus, that's actually one of the threads I read before posting. Is this still an on going problem?

Spyware
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  #215674 18-May-2009 18:48
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Certainly is on going with no solution in sight. Looks disgusting and in my opinion unwatchable, how TVNZ could deliberately destroy this service is beyond comprehension. DVB-T is way better I'm afraid.




Spark Max Fibre using Mikrotik CCR1009-8G-1S-1S+, CRS125-24G-1S, Unifi UAP, U6-Pro, UAP-AC-M-Pro, Apple TV 4K (2022), Apple TV 4K (2017), iPad Air 1st gen, iPad Air 4th gen, iPhone 13, SkyNZ3151 (the white box). If it doesn't move then it's data cabled.




Brunzy
2016 posts

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  #215754 18-May-2009 22:26
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Masarius: Hi guys, I'm new here and a complete novice so please excuse my lack of technical knowledge :-p



Anyway, yesterday I bought a DVTS-1 satellite freeview box to get the freeview satellite feed. I'm in Dunedin live about half way a valley system and simply can't get terrestrial coverage so satellite was necessary. The previous tenants had sky installed so I set the DVTS-1 box up myself using the existing sky dish and cables. The setup went well, all channels were found and the setup menu tells me I have 83% signal (is this good?) and 100% quality.

The problem I'm having is that with many of the channels I get moderate to bad pixelisation of the image whenever there is motion on the screen. This usually happens when the camera is panning or there is a lot of movement. For example when watching the sports highlights on one news the grass of the sports field is made up of a series of mosaic like squares as the camera follows the action of the game. The same happens to people’s faces when they're talking quickly or moving fast, etc... I'm also getting a bit of artefacting on the screen.

I did a forum search before I submitted this post and I have a few questions:
- I understand that a few months ago TVNZ was doing something to the signal to try and fit more features into it's limited bandwidth and this was damaging picture quality, is this still a problem?









- I rang the manufacturer and they suggested it may be due to rain fade. It is raining at the moment and is raining a lot further north towards Canterbury, but my understanding is rain fade only really happens during harsh weather. Is this true or could the light rain over Dunedin be causing my problems?









- The manufacturer also suggested that the sky dish may be old and outdated. Like I said above it's a skytv dish, but it was probably installed at least 3 years ago. Could this be the case?









-Is it possible that I have a dodgy freeview box?

Thanks!




Sounds like it.

If it was signal related it would pixellate constantly
and ,with it reporting 100% quality (although they tend to over estimate)
would tend to say the dish is ok.

I would try and borrow a different box ,and depending on results,
go back to the retailer.

allstarnz
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  #215788 18-May-2009 23:51
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does your box show BER on it? (bit error rate - basically how many errors are in the stream). This will give you a good idea if it's the signal quality.  The higher the BER, the more errors there are.


As has been stated, if it's only high motion, it sounds more like a garbage feed, which you have no control over.

Biggles69
83 posts

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  #215868 19-May-2009 12:07
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You could try the fta Sky feed for TV1 & 2 thats what i've done while tvnz sort things out, the feeds not great but i havn't noticed any pixelation (certainly a lot better than freeveiw's feed)
here's the transponder info for the sky tvnz mux
TP 12.671 pol H 22500
(or maybe 12.672)

What software are you using?

"Freeview, Crystal Clear (Pixelated) Digital Quality Televison"

Masarius

7 posts

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  #215883 19-May-2009 12:42
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Hi guys, thanks for the replies.

Unfortunately I can't find the BER information and the manual doesn't mention it so I guess it isn't a function of this particular box.

I rang both freeview and the manufacturer to ask them about the possible broadcast issues but neither of them knew anything about it, the manufacturer of the box even told me that TVNZ lowering the bit rate of the broadcast should not have any impact on the quality of image so I'm not sure what's going on there.

I'm probably going to call someone out to make sure that it isn't something simple like a dodgy box or dish.



Biggles69
83 posts

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  #215949 19-May-2009 14:55
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Masarius: Hi guys, thanks for the replies.



Unfortunately I can't find the BER information and the manual doesn't mention it so I guess it isn't a function of this particular box.



I rang both freeview and the manufacturer to ask them about the possible broadcast issues but neither of them knew anything about it, the manufacturer of the box even told me that TVNZ lowering the bit rate of the broadcast should not have any impact on the quality of image so I'm not sure what's going on there.



I'm probably going to call someone out to make sure that it isn't something simple like a dodgy box or dish.



Sounds like you have been lied to, which also means that the tvnz feed will not be getting any better.
The problem is with the bitrate of the freeview feeds, the fact that they are now denying there is a problem means we are probably stuck with a sub standard satellite tv service.
Lowering the bitrate has a huge impact on video quality, its supposed to be DVD quality but right now its far from that.

dtvs
73 posts

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  #216179 20-May-2009 09:18
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I was actually the person you spoke to in regards to this particular problem. What you told me was that it was doing it when raining and not so bad when it was fine, so from that information it sounded like you were getting the ever popular rainfade.

In terms of the box being faulty this is not the case as you would get the same result on the 12456 transponder, please if you need more information give me a call you have my number.

Biggles69
83 posts

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  #216222 20-May-2009 10:37
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dtvs: I was actually the person you spoke to in regards to this particular problem. What you told me was that it was doing it when raining and not so bad when it was fine, so from that information it sounded like you were getting the ever popular rainfade.

In terms of the box being faulty this is not the case as you would get the same result on the 12456 transponder, please if you need more information give me a call you have my number.


If the Pixelation is occuring during fast movement & happens if it is or isn't raining then it still will be a bitrate issue with the tvnz freeview feed.
I can't find any info on rain fade causing pixelation only during fast movemet!!!! only pixelation caused by incorrect bitrates.
Seems odd that everyone in NZ is getting the same problem since TVNZ started "Testing"

grolschie
911 posts

Ultimate Geek


  #216557 21-May-2009 09:42

Biggles69: You could try the fta Sky feed for TV1 & 2 thats what i've done while tvnz sort things out, the feeds not great but i havn't noticed any pixelation (certainly a lot better than freeveiw's feed)....


I am thinking of doing the same.

richms
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  #216709 21-May-2009 15:47
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I find it unwatchable on a 21" CRT connected by composite so those with bigger better screens must be finding it reminds them of watching discovery on sky digital... 3 plus1 is the worst of the ones with content worth watching, stratos is really bad sometimes but I think thats just what they are getting it from rather than their transmission.

Anyway, there is nothing you can do about it. TVNZ seem to want to pack in more channels of the same crap just to sell more adverts to southern companies. Its a free service so all you can do is stop watching it.




Richard rich.ms

Biggles69
83 posts

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  #216719 21-May-2009 16:11
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richms: I find it unwatchable on a 21" CRT connected by composite so those with bigger better screens must be finding it reminds them of watching discovery on sky digital... 3 plus1 is the worst of the ones with content worth watching, stratos is really bad sometimes but I think thats just what they are getting it from rather than their transmission.



Anyway, there is nothing you can do about it. TVNZ seem to want to pack in more channels of the same crap just to sell more adverts to southern companies. Its a free service so all you can do is stop watching it.



TV3 has been pretty crap since they introduced TV3+1, whats the point of having another channel which is just repeats if the quality of your main channels has to suffer.

TV3 (bitrate looks fixed at 4mbps)
http://www.satcodx5.com/1600/tsbitrate.cgi?16000050000000000027-v

TV3+1 (bitrate looks fixed at 3mbps)
http://www.satcodx5.com/1600/tsbitrate.cgi?16000050000000000879-v

C4 (bitrate looks fixed at 3.8mbps)
http://www.satcodx5.com/1600/tsbitrate.cgi?16000050000000000028-v

What makes it worse is the fact that TV3, C4 & TVNZ used to have bitrates around 6mbps+ which is about DVD quality.

garvani
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  #216737 21-May-2009 16:56
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This whole situation really annoys me. And ill give a warning, rant ahead!
People that can't get freeview|HD (DTT) either have to get freeview satelite or get myskyhdi, because the government doesn't want to invest more cash into the rollout, that was ok and bareable when the quality of the feed was great, now we are getting shafted even more by a substandard satellite service because tvnz want to resolve there waining revenue stream by adding regional feeds of the same friggin channels, by doing this they have to lower the bitrate on the remaining channels to fit these three extra channels (how this was ever okay'd by the freeview group i dont know! was this ever part of the freeview plan when they launched? as in were tvnz granted the extra three channels for regional feeds or has tvnz just tacked this on!?) All the while they are denying there is a problem, good stuff!
To top it off DTT users still have crystal clear HD reception.. Why not screw with the DTT feed after all thats where the majority of customers are and where your advertising dollars would be better spent!  Yep it definitely pays to live in the big centres all right, too bad about all the pollution, overcrowding and all the other negative things about living in big cities.

/rant over!
 
ahh feel better now.. haha. 5pm, time to go home!

ajw

ajw
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  #216749 21-May-2009 17:34
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I have just spoken to the team leader at freeview about this problem. He assured me that this problem was being caused by TVNZ doing some upgrades to equipment and should disapear within a month.

Just repeating what I was told.

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