[R-C] Question about the problem with TFRC

Varun Singh vsingh.ietf at gmail.com
Tue Apr 17 21:31:07 CEST 2012


Hi,

We did some experiments comparing TFRC, playout delay reporting, TMMBR
in a 3G environment. The experiments were done in ns2 where we
implemented a 3G link and an interface to hookup a real encoder to
pass video frames to and from ns2. The paper was published in a
workshop co-located with INFOCOM. The main metric we used was PSNR.
Both endpoints in this case were 3G endpoints and had different
throughput in their cells.

The link to the paper is:
http://www.netlab.tkk.fi/~jo/papers/2009-04-movid-3g-rate-adapt.pdf

On Tue, Apr 17, 2012 at 10:16, Michael Welzl <michawe at ifi.uio.no> wrote:
> Hi,
>
> I noticed that TFRC is, well, unpopular here. I understand the reasons, in
> particular the group's desire to minimize buffering. So I'm not making a
> proposal here, just asking a question out of academic curiosity: is this
> just handwaving and assumptions, or have some people given it a try and
> found that it doesn't work well? Are there any documented results showing
> that?
>
> I think someone posted earlier on that there were poor experiences with
> TFRC; I'm just interested in more details about that. Again, I'm not
> proposing anything here, just interested for my own research.
>
> Cheers,
> Michael
>
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> Rtp-congestion at alvestrand.no
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-- 
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