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Re: [v6ops] smartphone v6-v4 conversions affect video-conf quality?

Henri Alves de Godoy <henri.godoy@fca.unicamp.br> Tue, 20 October 2020 13:05 UTC

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From: Henri Alves de Godoy <henri.godoy@fca.unicamp.br>
Date: Tue, 20 Oct 2020 10:05:26 -0300
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Cc: Alexandre Petrescu <alexandre.petrescu@gmail.com>, "v6ops@ietf.org" <v6ops@ietf.org>
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Subject: Re: [v6ops] smartphone v6-v4 conversions affect video-conf quality?
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Hi Alexandre,

This subject is very interesting and I recently made some measurements
using 464XLAT to access the web and the differences in microseconds between
an ipv4 and ipv6 access were imperceptible for an end user. (4 to 10 μs).

The problem that makes any attempt to measure difficult is that many video
applications are not yet entirely on IPv6. The authentication systems of
the services are still in IPv4 and few like Microsoft Teams do not have
their IPv6 video transmission as far as I could verify.

Henri Alves Godoy
Information Technology and Communication
School of Applied Sciences
University of Campinas - UNICAMP
Fone: + 55 (19) 3701-6682

Em ter., 20 de out. de 2020 às 09:36, Mikael Abrahamsson <swmike=
40swm.pp.se@dmarc.ietf.org> escreveu:

> On Tue, 20 Oct 2020, Alexandre Petrescu wrote:
>
> > I wonder whether such a smartphone would get a better quality of video
> > if the video-call service was on IPv6, and thus no IPv4-IPv6 conversion.
>
> That depends on the network in question, if there is higher RTT going
> through for instance NAT64 device. The actual L4 user payload of the
> packets will be identical for both cases, the NAT64 doesn't change that.
>
> --
> Mikael Abrahamsson    email: swmike@swm.pp.se
>
> _______________________________________________
> v6ops mailing list
> v6ops@ietf.org
> https://www.ietf.org/mailman/listinfo/v6ops
>


-- 
-- 
Henri Alves Godoy
Tecnologia da Informação e Comunicação
Faculdade de Ciências Aplicadas - FCA
Universidade Estadual de Campinas - UNICAMP
Fone: (19) 3701-6682

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