Galène videoconferencing server discussion list archives
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From: T H Panton <>
To: Juliusz Chroboczek <>
Subject: [Galene] Re: using up more ports in ipv6 for better congestion control
Date: Fri, 16 Jul 2021 16:46:41 +0200
Message-ID: <> (raw)
In-Reply-To: <>

> On 16 Jul 2021, at 03:37, Juliusz Chroboczek <> wrote:
>>> Tim, I'd be very grateful if you could explain what advantages TWCC has
>>> over REMB.  For now, I'm sticking with REMB.
>> I can’t speak from experience (I’ve only used REMB) - but my sense is
>> that the difference really kicks in when you have multiple video media
>> streams using the same path.  So perhaps video, screen share and
>> audio. REMB treats each stream separately if I recall.
> Then REMB could be modified to perform per-connection congestion control,
> just like TWCC, without all of the chattiness of TWCC.

I don’t think it could. - isn't REMB based on watching the packet arrival interval which is
pretty consistent on a single stream.  But imagine multiplexing some opus (50 fps)
a screenshare (10fps) a thumbnail (15fps) and a presenter view (60 fps), you now have
multiple valid packet intervals (in some sort of repeating pattern). 
I imagine that would make the smoother in REMB go badly wrong.

TWCC is based on watching the time of flight - which doesn’t have that problem.

> I really feel that I'm missing something.
> -- Juliusz

  reply	other threads:[~2021-07-16 14:46 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-10 15:15 [Galene] " Dave Taht
2021-07-10 15:19 ` [Galene] " Dave Taht
2021-07-10 16:36 ` T H Panton
2021-07-10 16:48   ` Dave Taht
2021-07-11 11:19   ` Juliusz Chroboczek
2021-07-15 14:17     ` Sean DuBois
2021-07-16  1:36       ` Juliusz Chroboczek
2021-07-16 14:25         ` Sean DuBois
2021-07-15 16:26     ` T H Panton
2021-07-16  1:37       ` Juliusz Chroboczek
2021-07-16 14:46         ` T H Panton [this message]
2021-07-16 17:48           ` Juliusz Chroboczek

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Galène videoconferencing server discussion list archives

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