AR
Premium,ExMod 2001-04
join:2000-09-21
Toronto, ON
 ·Rogers Hi-Speed
| HD compression?
Does this mean Comcast can now un-compress HD signals such that subscribers who want to watch shows in full HD quality can actually do that?
From what I understand, this is optimization of the last mile (edge router to STB) bandwidth. So wouldn't it be possible for the user to control what exact channels consume that bandwidth? |
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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
 ·Sprint Mobile Broa..
·Comcast
| said by AR  :Does this mean Comcast can now un-compress HD signals such that subscribers who want to watch shows in full HD quality can actually do that? It could. But it will most likely mean MORE HD channels, which is what users are clamoring for. They are not clamoring for less compression.
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AR
Premium,ExMod 2001-04
join:2000-09-21
Toronto, ON
·Rogers Hi-Speed
1 edit | Sure - but how does this really work? As an end user, am I told how many HD channels I can have in the last mile versus that plus X regular channels?
What I mean is, they add more HD channels, hold them at the edge router and I as a user control how many full signal,uncompressed channels stay active in the last mile pipe?
Think of it like DSL - your last mile is capped at X Mbps whereas before the CO, there's a OC-X pipe but content trickles down the X mbps capped pipe to your PC. |
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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
·Sprint Mobile Broa..
·Comcast
|  said by AR :Sure - but how does this really work? As an end user, am I told how many HD channels I can have in the last mile versus that plus X regular channels? End users will have no say in how their channels are delivered to the edge router. It will be a statistical algorithm based on how many users are on a node and how many different channels they are watching spread over the available bandwidth.
The problems that arise will happen when the multiple viewers on a node watch more unique channels than the bandwidth allocated to the node allows. Sort of like what happens today when many users try to use VOD at the same time and run out of channel space allocated to VOD at the node. They get an error message.
If SDV is not configured correctly or some unique combination of users on a node all requesting different channels occurs, you could end up trying to watch a channel and get refused and end up just getting an error msg.
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S_engineer
join:2007-05-16
Chicago, IL
·Comcast
| The TTL question still remains. There needs to be a concise policy on which takes precedent (re:bandwidth), vod or hd.
The market would come into play of course but I could see a clear cut in service when it comes to VOD and HD. Ex: are you going to have antiquated movies removed and offer less than popular HD channels because more people are demanding a certain video or want a specific channel?
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bugabuga
join:2004-06-10
Austin, TX
| reply to TKJunkMail
I don't think there's a real chance of that if they actually deploy all of the channels as switched video. I don't think they have more than 200 households on a single node that will watch 200 exactly different channels at the same time  |
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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
·Sprint Mobile Broa..
·Comcast
| said by bugabuga :I don't think there's a real chance of that if they actually deploy all of the channels as switched video. I don't think they have more than 200 households on a single node that will watch 200 exactly different channels at the same time But with multiple users and multiple TVs & STBs in many households, it starts to become possible.
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