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Manchester - Local Freeview Multiplex - Information Thread |
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#301 |
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Forum Member
Join Date: May 2002
Location: Beds (Sandy Heath TX)
Posts: 8,852
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Quote:
Surely the PSB Local TV muxes will have capacity that can house these currently-Manchester-only channels?
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#302 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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So someone's been tinkering with the Manchester mux today...
At approx 4:30pm PIDs 2316/7 were replaced by 2828/9 - Code:
28,29d19 < PID found: 2316 (0x090c) [PS/PES: ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 video stream] < PID found: 2317 (0x090d) [PS/PES: ISO/IEC 13818-3 or ISO/IEC 11172-3 audio stream] 33a24,25 > PID found: 2828 (0x0b0c) [PS/PES: ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 video stream] > PID found: 2829 (0x0b0d) [PS/PES: ISO/IEC 13818-3 or ISO/IEC 11172-3 audio stream] By 5pm that had been put back how it was, and now PIDs 2682/3 were replaced by 3578/9 - and this has been the ongoing change still visible right now - Code:
< PID found: 2682 (0x0a7a) [PS/PES: ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 video stream] < PID found: 2683 (0x0a7b) [PS/PES: ISO/IEC 13818-3 or ISO/IEC 11172-3 audio stream] --- > PID found: 3578 (0x0dfa) [PS/PES: ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 video stream] > PID found: 3579 (0x0dfb) [PS/PES: ISO/IEC 13818-3 or ISO/IEC 11172-3 audio stream] |
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#303 |
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Forum Member
Join Date: Jan 2005
Posts: 749
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No visible changes. Same channels - same crappy reception.
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#304 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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new LCN - 57 - HIGH STREET TV
LCN57 has appeared in the LCN & SDT tables on all muxes from Winter Hill at 11am this morning. The service is named "HIGH STREET TV" - there are as no video or audio PIDs yet so the channel isn't running.
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#305 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Update - video and audio started at about 13:00 - so "HIGH STREET TV" is now up and running on the Manchester mux.
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#306 |
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Forum Member
Join Date: May 2002
Location: Beds (Sandy Heath TX)
Posts: 8,852
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#307 |
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Forum Member
Join Date: Jul 2006
Posts: 518
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Surely the Manchester mux is now full, with 6 full time channels??? Wheres this 'local' channel gonna fit in on the mux....or will one of these 6 current channels have to go to make way for 'Local TV'?
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#308 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Quote:
Is that - as the name suggests - a shopping channel? edit I guess it's this, a JML type channel?
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#309 |
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Forum Member
Join Date: Dec 2008
Location: East Midlands
Posts: 5,204
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Quote:
Surely the Manchester mux is now full, with 6 full time channels??? Wheres this 'local' channel gonna fit in on the mux....or will one of these 6 current channels have to go to make way for 'Local TV'?
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#310 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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scrambled, not running?
I just noticed that High Street TV is flagged as "scrambled" and "not running" in the SDT: Quote:
Service_id: 30081 (0x7581) [= --> refers to PMT program_number] Compare that with Capital TV which looks like other services:reserved_1: 63 (0x3f) EIT_schedule_flag: 0 (0x00) EIT_present_following_flag: 0 (0x00) Running_status: 1 (0x01) [= not running] Free_CA_mode: 1 (0x01) [= streams [partially] CA controlled] Descriptors_loop_length: 19 (0x0013) DVB-DescriptorTag: 72 (0x48) [= service_descriptor] descriptor_length: 17 (0x11) service_type: 1 (0x01) [= digital television service] service_provider_name_length: 0 (0x00) service_provider_name: "" service_name_length: 14 (0x0e) Service_name: "HIGH STREET TV" -- Charset: Latin alphabet Quote:
Service_id: 30017 (0x7541) [= --> refers to PMT program_number] Waves at the Canis Media folks - you might want to fix this if it isn't deliberate...
reserved_1: 63 (0x3f) EIT_schedule_flag: 0 (0x00) EIT_present_following_flag: 0 (0x00) Running_status: 4 (0x04) [= running] Free_CA_mode: 0 (0x00) [= unscrambled] Descriptors_loop_length: 15 (0x000f) DVB-DescriptorTag: 72 (0x48) [= service_descriptor] descriptor_length: 13 (0x0d) service_type: 1 (0x01) [= digital television service] service_provider_name_length: 0 (0x00) service_provider_name: "" service_name_length: 10 (0x0a) Service_name: "CAPITAL TV" -- Charset: Latin alphabet |
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#311 |
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Forum Member
Join Date: Sep 2001
Location: Manchester
Posts: 348
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The BBC/Atos/DMOL manages the contents of the SDT, maybe you need to email them?
It's happened before when GMG owned the mux, think someone in London needs to read the instructions that came with the CSI. |
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#312 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Quote:
The BBC/Atos/DMOL manages the contents of the SDT, maybe you need to email them?
It's happened before when GMG owned the mux, think someone in London needs to read the instructions that came with the CSI. I've heard via another source that DMOL are aware and are fixing it. I've added another quick perl script that should detect the change and email me when it changes. |
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#313 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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They fixed it around 9:20am - now showing as running and unscrambled - same as the other 5 services on the mux.
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#314 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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There was another reshuffle of video and audio PIDs today around 5:30pm. Wondering why they'd done that, I had a look at the bandwidth stats- and they've had a change around...
Code:
Monday @ 22:16 PID Mbps content ---- ---- ----------- 1fff 2.62 null packets 090f 2.59 mov4men+1 0909 2.60 movies4men 0904 2.51 ARGOS TV 24/7 090c 2.51 SONY SAB 1930 1.64 HIGH STREET TV 0dfa 1.49 CAPITAL TV 0012 1.37 EIT Wednesday @ 18:29 PID Mbps content ---- ---- ----------- 0d30 3.00 HIGH STREET TV 090f 2.62 mov4men+1 0909 2.64 movies4men 0dfa 2.50 CAPITAL TV 110c 2.00 SONY SAB 1904 2.01 ARGOS TV 24/7 0012 1.36 EIT 1fff 1.14 null packets |
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#315 |
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Forum Member
Join Date: Sep 2001
Location: Manchester
Posts: 348
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I think they've just moved from VBR to CBR. I've always seen the bit rates fluctuate on most of the services until today. Now they seem to be pretty much fixed.
As a result, I question the accuracy of those original figures, unless they've been averaged over a long period of time. |
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#316 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Quote:
I think they've just moved from VBR to CBR. I've always seen the bit rates fluctuate on most of the services until today. Now they seem to be pretty much fixed.
As a result, I question the accuracy of those original figures, unless they've been averaged over a long period of time. The above stats were both taken by running a file containing a 5 minute transport stream dump through TSReader Lite - though I can also get snapshot values with dvbsnoop -s bandwidth on the live data which pretty well agreed with the 5 minute averages. Having looked again just now 09:35 - it's been tweaked again. High Street now 2.0 Mbps (down by 1.0), Sony 2.5 Mbps (up by 0.5), null packets 1.6Mbps (up by 0.5). I wonder why they feel the need to have the EIT running so high - it's more than twice the data rate that is used on e.g. BBCA. |
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#317 |
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Forum Member
Join Date: Jul 2007
Location: London, UK
Posts: 4,751
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All those null packets, all that wasted bandwidth...
Also, using CBR in 2012 = fail. |
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#318 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Quote:
All those null packets, all that wasted bandwidth... Also, using CBR in 2012 = fail.
Further on the EIT- if that was halved, it would release something like 850Kbps, add that to null packets (which are no longer VBR headroom) and you have 2.4Mbps - so about one more channel's worth of free space at the rates they are using. |
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#319 |
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Forum Member
Join Date: Mar 2003
Posts: 2,753
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From the figures you've given Greebo, I would say all channels are statmuxing between 2 and 3Mb now.
Best way to know would be to do 2 short samples and a long sample
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#320 |
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Forum Member
Join Date: Dec 2005
Posts: 16
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51 movies4men
52 mov4men+1 53 SONY SAB 54 ARGOS TV 24/7 56 CAPITAL TV All these have disappeared for me Anyone else?
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#321 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Quote:
51 movies4men
52 mov4men+1 53 SONY SAB 54 ARGOS TV 24/7 56 CAPITAL TV All these have disappeared for me Anyone else? |
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#322 |
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Forum Member
Join Date: Feb 2002
Location: Hindley Green
Posts: 383
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Quote:
51 movies4men
52 mov4men+1 53 SONY SAB 54 ARGOS TV 24/7 56 CAPITAL TV All these have disappeared for me Anyone else? |
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#323 |
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Forum Member
Join Date: Dec 2005
Posts: 16
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Thanks, will try a rescan
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#324 |
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Inactive Member
Join Date: Feb 2013
Posts: 943
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Where in manchester
Where in Manchester can receive these channels?
I have family who are on Winter hill mast and in M9 but no matter how often you rescan their is no movies4men or movies 4men + 1
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#325 |
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Forum Member
Join Date: Feb 2003
Posts: 1,256
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Quote:
Where in Manchester can receive these channels?
I have family who are on Winter Hill mast and in M9 but no matter how often you rescan their is no movies4men or movies 4men + 1 ![]() Given that Canis Media (who now run the current Manchester mux) are behind Comux who won the infrastructure contract for the more national rollout of local tv muxes, I wonder if they'll be in a position to get this mux moved up the WH mast when the new Manchester/Liverpool/Preston petals are setup? |
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Anyone else?