Differences DVB-T to DVB-S

[herrr]

Re: Differences DVB-T to DVB-S

The differences are that dvb-t is much easier to receive (when you have normal signal strength) but has a smoother picture which has minor sharpness - caused by the explained lower bitrates and special smoothing-technics by the broadcaster. In "analoge quality" there can be broadcasted 3 or 4 programs on a former analoge channel. DVB-T is usualy made for TVs with integrated dvb-t tuner. For a normal user (like my parents) it's enough quality.
Good sat-receivers are made for better picture and sound with higher bitrates. I use Sat for normal watching and dvb-t as backup in my house.

OK: but you have to consider different habits in different nations: Germany always had a lot of cable and satellite users, Italy completely not cable (except, for artistic reasons, city of Siena, where both dishes and terrestrial antennas are not allowed).
Satellite was only developed with D+ and then SKY...
And last but not least, we have a complete offer of pay TV on terrestrial TV...that's non-sense...but guess who's the owner...

[besit]

Re: Differences DVB-T to DVB-S

DVB stands for digital video broadcasting. It exists in 3 incarnations - DVB-S, DVB-C and DVB-T. These 3 standards have a one major difference - DVB-s intended to broadcast via satellite network, DVB-C - cable network and DVB-T - terrestrial network. DVB-S and DVB-T have 2nd generation extension - T2 and S2, to use optimezed modulation types. (Never heard about DVB-C2).
All DVB standards utilize same codecs, compressions, the difference is on a frequency level. So it's kind incorrect to talk about "quality". The quality depends on provider not on a standard.
I can say like it goes in Russia
They had test broadcasting in DVB-T. 8 federal channels on one frequency. FTA. Quality was less then medium- SD, Low bitrates, all channels in 4x3, No EPG. Than they said -"No we 'll move to DVB-T2" and I absolutely lost my interest for terrestrial DVB in Russian federation.

PS
Cardsharing is possible for all 3 standards.

[marian321]

Re: Differences DVB-T to DVB-S

So it's kind incorrect to talk about "quality". The quality depends on provider not on a standard.

Off course they have the same codec-standard, but it depends, what a provider makes of it. The most providers use lower bitrates for picture and sound so that you nearly always have lower quality. That's what I ment with "lower quality".

And I don't know any provider who uses ac3 in normal dvb-t. Perhaps somewhere else?

But you are right: same codec, same bitrates - same result!

[herrr]

Re: Differences DVB-T to DVB-S

And I don't know any provider who uses ac3 in normal dvb-t. Perhaps somewhere else?

No, even in Slovenia, they use since the beginning a peculiar version of DVB-T(same bandwidth as usual, but H-264 for video), there is good old mp2 for audio...

[pan1300]

Re: Differences DVB-T to DVB-S

hi

The 'ketnet" channel is SD, but not sure if I have the one DVB-S or the one DVB-S2 (will check later if I don't forget) - no freezing with the antenna, so it's good.

hi FYI: it's the one DVB-S2, but only 576i

[marian321]

Re: Differences DVB-T to DVB-S

No, even in Slovenia, they use since the beginning a peculiar version of DVB-T(same bandwidth as usual, but H-264 for video), there is good old mp2 for audio...

What bitrate do they use in mp2, 128kbit or 192kbit or something different? I think they used joint stereo!?

[herrr]

Re: Differences DVB-T to DVB-S

What bitrate do the use in mp2, 128kbit or 192kbit or something different? I think they used joint stereo!?

Here there is a lot of info about it:
_http://www.alexmusic.net/tele/dtt/freq/27.htm
Really there is a mistake: language of TV Koper Capodistria is italian: that's an historical out of borders broadcaster, very popular in Italy in 70s and 80s, the channel and the location of transmitters belonged to that station (channel 27).
Other data about it:
_http://igorfuna.com/dvb-t/slovenia/multiplex-a-transport-stream-analysis

[microchick]

Re: Differences DVB-T to DVB-S

I don't know If I should ask this question here but it is related to DVB-T
I have a USB DVB-T stick and I use it to Watch French freeview on my laptop when I am in France. In september I noticed that is scanned some HD channels too and I was getting like M6 HD and some other ones. My Stick is is not HD. Why I was getting HD channels? Is it capable to Scan and receive HD channels?

[findeciclo]

Re: Differences DVB-T to DVB-S

I don't know If I should ask this question here but it is related to DVB-T
I have a USB DVB-T stick and I use it to Watch French freeview on my laptop when I am in France. In september I noticed that is scanned some HD channels too and I was getting like M6 HD and some other ones. My Stick is is not HD. Why I was getting HD channels? Is it capable to Scan and receive HD channels?

Usually the most of USB DVB-T receivers are equiped with HD tuner.
The old USB sticks, don't talk about it at their handbooks, but in my experience they are capable to receive HD DVB-T channels.
I have had Intuix and Hauppage sticks DVB-T receivers and I was be able to watch HD tv. But it broke down quickly, perhaps by overheating. I don't know why, but this is the real truth.

Best regards.

[microchick]

Re: Differences DVB-T to DVB-S

The one i have is a Hauppage DVB-T Nova T. It doesn't overheat. Its the only main TV source i have in France. I watch all the morning music on it. I bought it in 2007 when HD TV was not as popular. It never scanned HD channels before. I did a scan in end of July and no HD channles. Then Beginning of September and about 4 HD channels. Don't know how..

[findeciclo]

Re: Differences DVB-T to DVB-S

The one i have is a Hauppage DVB-T Nova T. It doesn't overheat. Its the only main TV source i have in France. I watch all the morning music on it. I bought it in 2007 when HD TV was not as popular. It never scanned HD channels before. I did a scan in end of July and no HD channles. Then Beginning of September and about 4 HD channels. Don't know how..

That is the same I have had, Hauppage DVB-T Nova. And when I purchased it HD TV was not usually. But this USB stick can tune HD channels. The problem for me was the overheating and the stick broke.
So as I told you the most of market usb sticks are HD compatible.
Enjoy it.
Best regards.

[pan1300]

Re: Differences DVB-T to DVB-S

hi

as far as I know and tested on a few places, all DVB-T tuners got HD channels, but nothing much free in france (and belgium)

[microchick]

Re: Differences DVB-T to DVB-S

The strange thing is that it doesn't scan HD freeview channels in the UK. Tested in a few regions in the UK and all SD channels are scanned but no HD. I use Windows Media Centre on Windows 7.

[herrr]

Re: Differences DVB-T to DVB-S

Every receiver (card, USB) for pc is able to receive normal HD programs, for example RAI HD in Italy or TF1, France2...HD in France.
The hardware is the same, only you have to use on your pc software and codec (video H-264) that fit HD broadcast.
Even my Technotrend USB receiver (about 5 years old, or even older, I don't remember...) is OK.
You can't receive HD broadcast in DVB-T2 (in Italy Europa 7, in Germany experimental), but there are the newest USB receiver for DVB-T2.

It's similar to satellite channels of Swiss TV on Hotbird: italian and french HD are DVB-S, SF (deutsch) is HD, but DVB-S2.

[findeciclo]

Re: Differences DVB-T to DVB-S

Every receiver (card, USB) for pc is able to receive normal HD programs, for example RAI HD in Italy or TF1, France2...HD in France.
The hardware is the same, only you have to use on your pc software and codec (video H-264) that fit HD broadcast.
Even my Technotrend USB receiver (about 5 years old, or even older, I don't remember...) is OK.
You can't receive HD broadcast in DVB-T2 (in Italy Europa 7, in Germany experimental), but there are the newest USB receiver for DVB-T2.

It's similar to satellite channels of Swiss TV on Hotbird: italian and french HD are DVB-S, SF (deutsch) is HD, but DVB-S2.

OK, I understand. There are HD channels broadcasting in MPEG-2 suitables for all receivers, and another HD channels broadcasting in MPEG-4 (T2) that doesn't works at those DVB-T receivers.
Thanks and best regards.