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Re: [multrans] [MBONED] Carriers' IPTV uses multicast vs unicast, OTT/HTTP

Susan Hares <susan.hares@huawei.com> Thu, 22 December 2011 23:17 UTC

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From: Susan Hares <susan.hares@huawei.com>
To: "Lee, Yiu" <Yiu_Lee@Cable.Comcast.com>, Tina TSOU <Tina.Tsou.Zouting@huawei.com>, "mboned@ietf.org" <mboned@ietf.org>, "multrans@ietf.org" <multrans@ietf.org>
Thread-Topic: [MBONED] Carriers' IPTV uses multicast vs unicast, OTT/HTTP
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Date: Thu, 22 Dec 2011 23:16:07 +0000
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Subject: Re: [multrans] [MBONED] Carriers' IPTV uses multicast vs unicast, OTT/HTTP
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 Yiu:

Wow! Thanks for the quick response. I was a bit unclear. 

My understanding is that the buffering actually pushes things toward the multicast model.

Sue 

-----Original Message-----
From: Lee, Yiu [mailto:Yiu_Lee@Cable.Comcast.com] 
Sent: Thursday, December 22, 2011 6:12 PM
To: Susan Hares; Tina TSOU; mboned@ietf.org; multrans@ietf.org
Subject: Re: [MBONED] Carriers' IPTV uses multicast vs unicast, OTT/HTTP

Hi Sue,

I think it really depends whom you speak to. Buffering can be done in different places (e.g., broadcast stations put 5 sec delay in their live streams). This requirement alone won't require unicast streaming.

Cheers,
Yiu


On 12/22/11 6:07 PM, "Susan Hares" <susan.hares@huawei.com> wrote:

> Yiu Lee:
>
>Many people who I asked about live feeds, said the live feeds were 
>often shifted 5-20 minutes and then done as normal video streaming.
>
>Is this true? 
>
>Thanks, and If I don't hear from you.. Merry Christmas,
>
>Sue
>
>-----Original Message-----
>From: Tina TSOU
>Sent: Thursday, December 22, 2011 6:05 PM
>To: Lee, Yiu; mboned@ietf.org; multrans@ietf.org
>Subject: RE: [MBONED] Carriers' IPTV uses multicast vs unicast, 
>OTT/HTTP
>
>Yiu,
>You address my puzzle. Thanks and Merry X'mas!
>
>
>Best Regards,
>Tina TSOU
>http://tinatsou.weebly.com/contact.html
>
>
>-----Original Message-----
>From: Lee, Yiu [mailto:Yiu_Lee@Cable.Comcast.com]
>Sent: Thursday, December 22, 2011 2:50 PM
>To: Tina TSOU; mboned@ietf.org; multrans@ietf.org
>Subject: Re: [MBONED] Carriers' IPTV uses multicast vs unicast, 
>OTT/HTTP
>
>For OTT providers, unicast is the current option to deliver live 
>content because inter-domain multicast is uncommon. Speaking of trend, 
>using unicast for broadcasting is inefficient IMHO, so I don't see why 
>using http to deliver live content is the trend.
>
>My 2 cents.
>
>
>On 12/22/11 2:52 AM, "Tina TSOU" <Tina.Tsou.Zouting@huawei.com> wrote:
>
>>Hi,
>>Someone mentioned that it seems the trend that carriers' IPTV uses 
>>unicast, OTT/HTTP, rather than multicast.
>>Thoughts?
>>
>>Sent from my iPad
>>_______________________________________________
>>MBONED mailing list
>>MBONED@ietf.org
>>https://www.ietf.org/mailman/listinfo/mboned
>

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