i just mean the 5 hd channel, not all astro channel? do u see my post?

other all sd 720*576 or lower, wat i saw at the data stream, astro just provider 8Mbits/s, compare other country r 12-18Mbits/s


over satellite


This post has been edited by chooncc: Jan 3 2010, 02:05 AM

Mayb astro juz ngam2 adjust the data stream to save bandwidth...

dont u saw my post, i mean Q1 2010, mean this few month, wait for the news

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Added on January 3, 2010, 2:11 amcompare wat i saw for the fashion tv full hd using the s2 system,
i saw the colour and pixel using 7Mbits/s vs astro full hd 5 channel, using 8Mbits/s
astro full hd totally lost, maybe of the master copy or transmiting problem

do S2 system more advanced compare the S1???

This post has been edited by chooncc: Jan 3 2010, 02:11 AM

Oh yes, huge difference there!

anyone can see huge different on HD Ready TV? (not full hd)

Of course I read your post. It's 1920x1080i but that's from the Astro's uplink side. If the football match they receive is at 720p, Astro can upconvert it and flag it at 1080i before uplinking it.

Don't confuse the downlink data stream with source resolution. A broadcaster can take 480p/576p source, upconvert it, flag it as 1080i, uplink that show and it still won't look like a true 1080i source. But the data stream will tell you it's 1080i.

I hope you understand the concept of variable encoding. And if you do, you'd understand that upper bandwidth limit is not set in stone (to a certain hardware degree). Astro can increase the bandwidth for each of the HD channels to 12-18 if it chooses to. At the same time, those NHK and CCTV could also decrease the bandwidth in the future. By the way, I checked the Chinasat 6B details. On that satellite, there's 4 HD channels, one of which is CCTV. All of those HD channels are uplinked using MPEG-2 which is less efficient at video encoding than H.264, which is what Astro is using for its HD channels. I can't find info about NHK but I bet they have more than two satellites on the air than Measat; more satellites means more transponders.

You could ask Astro technical department why they decide on 8Mbps and if they could bump it up to 12-18Mbps. Let us know what they say.


fuad

those who moved on with S2, they are most likely using H264 compression. Since you said fashiontv is 7+Mbps...perhaps is S2 system with h264...astro is using s2 with h264 too, hence with the 8Mbps rate. Those 17-18Mbps ones uve mentioned seems to be mpeg-2...still s1 system perhaps?.... but 17-18Mbps mpeg-2 is almost similar to 8-9Mbps h264..... now if u found a channel using h264 at 17-18Mbps...then thats high quality =P

I saw your post but you didn't seem to understand what I wrote.

Vinasat has 12 KU and 8 C transponders. Currently they have 7 HD channels. You said that by Q1 of 2010, they'll have 30 HD channels. If they are transmitting at 12 Mbps now, do you think they can sustain the same bandwidth to all 23 other HD channels using the same number of transponders? Take into account that by that same time they are increasing their SD channels from 21 to 70.

To make a fair comparison, you'd have to compare the same channels. Astro doesn't have Fashion TV HD. But the Asiasat 5 satellite also doesn't have 4 HD channels that Astro has. In fact, besides FTV HD, the only other HD channel is Luxe HD. Asiasat can up the bandwidth easily.

Also, Astro has not migrated to full DVB-S2 transmission which will increase their bandwidth by 30%. To migrate completely means that every Astro box will have to be changed to DVB-S2 box.

Of course, it's obvious now that you have one of those 6' wide C-band satellite dish on top of B.yond. Otherwise you won't have access to FTV HD, CCTV HD, Luxe or NHK HD.
Yes. It allows for more interactivity.

As compared to standard definition TV? Of course.

---

Added on January 3, 2010, 3:01 am Astro hasn't migrated to DVB-S2 yet. It's still transmitting from Measat 3 using DVB. That's probably why it's constraining bandwidth. Once they've migrated fully, bandwidth can be increased.

FTV HD on Asiasat 5 is DVB-S2 H.264.
CCTV is still using MPEG-2 hence the higher bit-rate.


fuad

This post has been edited by writesimply: Jan 3 2010, 03:02 AM

Mostly electric shop using Bluray as their media source. So the quality is more clear than byond.

for me, only thing i like is the remote and respond is much faster then previous type

hi,sorry guys wanna ask something,i found out when i using 576p and 720p picture more clear compare to 1080 when watching sd channel,(using 40inc lcd fullhd)just my eyes or its true?u all people realy advance than astro customer service.s1 n s2 i really dono wat is it.cannot follow.

This post has been edited by taq_gt: Jan 3 2010, 07:05 AM

Just trust your eyes... no need to listen to other since that is what you've been observed...

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Added on January 3, 2010, 7:49 amAnyone here knew when will the HD channel carry the movie subtitle?

This post has been edited by tailesley: Jan 3 2010, 07:49 AM

how many buttons to press in order to change output modes 576 720 1080

btw i didnt realize or believe astro SD is in 576 resolution as DVD only 480

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This post has been edited by kelvin: Jan 3 2010, 09:39 AM

nah you can believe that because there are 2 types of dvd, PAL and NTSC region. NTSC region dvds are 480...PAL dvds are 576....since we are in PAL region, astro is using 576 indeed

nhk hd at intelsat8 166degree east, using mpeg4 system, as them do, they will use the original source to public, as the quality just 720p, u will see some area will black colour, if full hd they will full screen, if 1280*1080, some area also black, cctv1 hd also do like that, but using mpeg2 system, depand on the video source.

not like astro convert the 720p to 1080i to increase the resolution even source not full hd,
astro current use 9 transporter to transmit the channel, all using 30000Kbit/s, so if the hd using 8000kbit/s to video, some for audio i think 150kbit/s,
so total will use 8150*5=40750, and total astro bandwidth just 9*30000=270000kbit/s reduce 40750 =229250kbits/s for all total other channel

17 radio or more, each not sure how many bit, i will check soon, and balance for the tv, so i think the tv r share 220000kbit/s
each video will get 220000/130 around 1500-2000kbit/s,
just similar video cd quality

i will check the stream data soon

This post has been edited by chooncc: Jan 3 2010, 10:21 AM

oops, right...almost forgot the hd channels were mixed in the same transponders as sd... but i beg to differ with the bandwidth thing, if no one complains im very sure they will maintain it for the time being and slowly decrease the bitrate as more channels are added in...just like what happened to those sd channels. lets just enjoy the good quality while it lasts...

i suggest to better understand the compression, try to convert an hd video to both h.264 and mpeg4 with the same bitrate and see the difference...

Astro CS person dont do their homework just like we all did. They just know about basic thing other than answer the phone.
Maybe u can ask astro technical person directly instead of CS person.

Installer will come in about 1 hour time to install B.yond for me.

Too much debate on whether the RM20 is worth it, but I think it's up to the individual to judge. Of course I would love to see more channels coming in this year, without extra charges

This post has been edited by samurai1337: Jan 3 2010, 11:51 AM