Re: [httpstreaming] Current Status and Our Goal
"Ali C. Begen (abegen)" <abegen@cisco.com> Wed, 06 October 2010 23:37 UTC
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Date: Wed, 06 Oct 2010 16:38:56 -0700
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Thread-Topic: [httpstreaming] Current Status and Our Goal
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From: "Ali C. Begen (abegen)" <abegen@cisco.com>
To: tme@americafree.tv
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Subject: Re: [httpstreaming] Current Status and Our Goal
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I was referring to latecy wrt real time. That is what Roni was talking about from what I can tell. As for the startup delay, nobody is saying the opposite. But tricks to make it faster are secret sauce to each implementation. And in unicast (as opposed to multicast), there more available tools at our disposal. -acbegen ----- Original Message ----- From: Marshall Eubanks <tme@americafree.tv> To: Ali C. Begen (abegen) Cc: Roni Even <Even.roni@huawei.com>; David A. Bryan <dbryan@ethernot.org>; Qin Wu <sunseawq@huawei.com>; httpstreaming@ietf.org <httpstreaming@ietf.org> Sent: Wed Oct 06 15:50:31 2010 Subject: Re: [httpstreaming] Current Status and Our Goal On Oct 6, 2010, at 6:40 PM, Ali C. Begen (abegen) wrote: > > >> -----Original Message----- >> From: Roni Even [mailto:Even.roni@huawei.com] >> Sent: Thursday, October 07, 2010 6:26 AM >> To: Ali C. Begen (abegen); 'David A. Bryan'; 'Qin Wu' >> Cc: httpstreaming@ietf.org >> Subject: RE: [httpstreaming] Current Status and Our Goal >> >> Ali, >> It is not the same as multicast but is still a problem for live streaming >> when buffering is used on the server that may delay the data and there is > > Sure, http streaming or streaming over another protocol will always be delayed. The content generation, pushing it to the source servers and CDN and then getting them to the clients plus the playout buffers will add up a delay of 20-30 seconds compared to regular over-the-air broadcast. > Are you talking about start times, or latency behind real time ? If it takes you a minimum of 20 seconds to start your video, you might as well not bother from a business standpoint, IMHO. Even small differences in video start times are viewed as a powerful competitive advantage in this business, and so there is going to be a strong push to shorten start times. Regards Marshall > I don't think there is much we can do about this, especially in the IETF. > >> also a need for video synchronization to start rendering. > > Synchronization among the viewers you mean? That could be a concern but seriously, since client implementations will differ, network capacities will differ, i.e., pretty much everything will differ for different clients, I don't think there is a solution to this. Better said, I don't think there is a problem. > >> For pre-recorded video this may be due to distance between synchronization >> points and the size of a chunk sent. > > Those things are all implementation specific IMO, they are not protocol issues. > > -acbegen > >> Roni Even >> >>> -----Original Message----- >>> From: Ali C. Begen (abegen) [mailto:abegen@cisco.com] >>> Sent: Thursday, October 07, 2010 12:15 AM >>> To: Roni Even; David A. Bryan; Qin Wu >>> Cc: httpstreaming@ietf.org >>> Subject: RE: [httpstreaming] Current Status and Our Goal >>> >>>> 2. Address the startup issue, we have worked in AVT on fast >>> channel/content >>>> change and I think this is relevant also in this case. >>> >>> Are you assuming a multicast environment for http streaming? Ow, the >>> startup issue is not an issue in unicast connections. >>> >>> -acbegen > > _______________________________________________ > httpstreaming mailing list > httpstreaming@ietf.org > https://www.ietf.org/mailman/listinfo/httpstreaming >
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal David A. Bryan
- Re: [httpstreaming] Current Status and Our Goal Ben Niven-Jenkins
- Re: [httpstreaming] Current Status and Our Goal Luby, Michael
- Re: [httpstreaming] Current Status and Our Goal Daniel Park
- Re: [httpstreaming] Current Status and Our Goal Roni Even
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Roni Even
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Kathy McEwen
- Re: [httpstreaming] Current Status and Our Goal Marshall Eubanks
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Kathy McEwen
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Kathy McEwen
- Re: [httpstreaming] Current Status and Our Goal Colin Perkins
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Lars Eggert
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Mark Watson
- Re: [httpstreaming] Current Status and Our Goal Ye-Kui Wang
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Mark Watson
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Lars Eggert
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Mark Watson
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Ning Zong
- Re: [httpstreaming] Current Status and Our Goal Mark Watson
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Ning Zong
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Ye-Kui Wang
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- Re: [httpstreaming] Current Status and Our Goal Qin Wu
- [httpstreaming] Push Vs Pull (was Re: Current Sta… Ben Niven-Jenkins
- Re: [httpstreaming] Push Vs Pull (was Re: Current… Qin Wu
- Re: [httpstreaming] Push Vs Pull (was Re: Current… Mark Watson
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)
- Re: [httpstreaming] Push Vs Pull (was Re: Current… Ning Zong
- [httpstreaming] Push Vs Pull Re: Current Status a… Qin Wu
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Qin Wu
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Thomas Stockhammer
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Qin Wu
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Thomas Stockhammer
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Qin Wu
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Thomas Stockhammer
- Re: [httpstreaming] Push Vs Pull Re: Current Stat… Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Colin Perkins
- Re: [httpstreaming] Current Status and Our Goal David R Oran
- Re: [httpstreaming] Current Status and Our Goal Benjamin Niven-Jenkins
- Re: [httpstreaming] Current Status and Our Goal Thomas Stockhammer
- Re: [httpstreaming] Current Status and Our Goal Colin Perkins
- Re: [httpstreaming] Current Status and Our Goal Spencer Dawkins
- Re: [httpstreaming] Current Status and Our Goal Wenbo Zhu
- Re: [httpstreaming] Current Status and Our Goal Ning Zong
- Re: [httpstreaming] Current Status and Our Goal Ning Zong
- Re: [httpstreaming] Current Status and Our Goal Ali C. Begen (abegen)