9GO is now is HD.
4 Likes
2 Likes
This morning run for a couple of hours
| 9 | 9SD | 2.2 |
| 90 | 9HD | 4.0 |
| 92 | Gem | 1.7 |
| 93 | Go | 1.9 |
| 94 | Life | 1.9 |
| 95 | Gem HD | 2.9 |
| 96 | Rush | 2.0 |
| 97 | Extra | 1.4 |
| 99 | Go! HD | 3.3 |
Retune message
6 Likes
Such a waste continuing with 9Gem and 9Go in SD. Put that bandwidth towards 9Life/9Rush HD. Donāt see any reason the SD simulcasts are needed anymore.
14 Likes
Really lowers the picture quality of the HD channels. 9GemHD in particular.
11 Likes
Generally agree, but with the ever declining free to air audience, a move like that will impact some people, even if itās a minority.
I canāt see a commercial business wanting to hasten the decline of their audience by deliberately cutting people off.
The free to air business model is already in a spiral; itās in their best interests to hang on to every ageing eyeball they can.
1 Like
Didnāt 10 & WIN manage to quietly change over all there multi Chanelās to MPG4 without causing to many heart failures ?
6 Likes
And Seven in RQLD where Two, Mate and Bravo are all MPEG4 HD.
3 Likes
Hey. Iām a technical novice. Does anyone know why the networks still broadcast an SD signal on like 71. 91. 21 etc?
Why couldnāt they use the spectrum?
The channels can be encoded as either MPEG2 or MPEG4. MPEG4 is a more modern format and is much more efficient - in very rough terms it takes approximately half the bandwidth as MPEG2. MPEG4 is therefore used for most of the HD channels and some of the SD multi channels. MPEG4 was first used on free to air in Australia in around 2015/16.
However, MPEG4 compatibility isnāt universal. The first digital TVs are only MPEG2 compatible. MPEG4 compatibility has only been included in TVs for approx the last 10-15 years (closer to 15 for the good brands and closer to 10 for the cheaper brands).
Therefore, the broadcasters are generally still opting to keep MPEG2 channels so that people with older TVs can still watch. That is changing though. Some networks are ditching MPEG2 for some channels, or all in the case of WIN.
3 Likes
So 9 or 7 could use 91 or 71 for a news channel stream at some point?
I think I misunderstood.
Those āduplicateā channels are essentially redirects. 9 and 91 both point to the same video and audio stream so the channel is only broadcast once, but it can be accessed with multiple LCN āchannelsā.
They do this so that the main channel is on the traditional single digit LCN, but it also grouped alongside the multichannels.
Same for 7/71, 2/21, 1/15 (Ten HD) etc
3 Likes
Right. Yeh. Thatās what I was wondering. So itās not taking extra spectrum to broadcast 9 in SD on 9 and 91?
How many HD channels could a 7 9 or 10 have on FTA spectrum if they get rid of SD channels and make them all MPEG4?
1 Like
Wow itās had an effect on 9Gem HDās quality (now behind Go!?), wonder if itās noticeable, in a big year too (Olympics along with all the other WWOS)
2 Likes
The bit rates are dynamic and fluctuate depending on program content. It will be a bigger test when there is sport on at least 2 of the HD channels - hate to think what sport will look like on the SD ones.
4 Likes
Itās a double edged sword for Nine - sports is where youāll most notice the horrible bitrates, especially as theyāll have live coverage across 2/3 channels at once, with HD+SD sharing content and peaking at the same time (a slight delay of the SD channel could help that); but at the same time, given Nineās reluctance so far to kill off their SD/MPEG-2 channels, just before the Olympics would be the worst time for that.
5 Likes
Could it be to do with how certain regional markets/stations and how they wildly vary with what channels are transmitted/available and the format/specs they carry?
1 Like
Only channel that Regional WIN and 7QLD have in MPEG2 from what I can see is
7 HD which is 1440x1080i MPEG2 HD (no SD simulcast)
WIN LCN 8 which is 720x576i SD MPEG2
4 Likes
10 did, I donāt remember seeing Peach in HD in SW of WA. I do remember seeing a scroll of 7, WIN & 10 upgrading to the technology.
7HD Regional QLD is now 1920 x 1080i (at least Sunshine Coast) though still MPEG 2
2 Likes