W3C home > Mailing lists > Public > public-webrtc@w3.org > October 2013

Re: Why people munge SDP

From: <piranna@gmail.com>
Date: Fri, 18 Oct 2013 09:41:13 +0200
Message-ID: <CAKfGGh36KHXR-O_+eQxSBamFZf7WzZfJfLKOgO3cgzP7R5iMyw@mail.gmail.com>
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Cc: "Cullen Jennings (fluffy)" <fluffy@cisco.com>, "<public-webrtc@w3.org>" <public-webrtc@w3.org>
Thanks for the link :-)

2013/10/18 Silvia Pfeiffer <silviapfeiffer1@gmail.com>:
> Hi everyone,
>
> sorry for picking up an old thread, but I'd like to point out an
> awesome interface for SDP munging:
> https://github.com/clux/sdp-transform .
> I wished browsers would expose SDP in the kind of JSON that this
> library provides!
> It even has a pretty formal grammar and parser.
> This should be an inspiration.
>
> Cheers,
> Silvia.
>
>
> On Wed, Jul 24, 2013 at 3:17 PM, Silvia Pfeiffer
> <silviapfeiffer1@gmail.com> wrote:
>> On Wed, Jul 24, 2013 at 2:01 PM, Cullen Jennings (fluffy)
>> <fluffy@cisco.com> wrote:
>>>
>>> The next issues that got mentioned was setting bandwidth. I think we should add a constraint, or some API, to be able to do this. It is a bit more complex to add because we likely need to set it on a track not a stream.
>>
>>
>> Yes, I'd really like an API for controlling the bandwidth use better.
>>
>> I've seen in Chrome that a PeerConnection ramps up to 2Mbps and then
>> tries to stay there.
>>
>> When I have multiple video tracks going over the same PeerConnection,
>> they together have to share the 2Mbps, which usually ends up in having
>> one video track continue to be active and the others drop in and out
>> all the time. That is not sustainable and we should provide bandwidth
>> limitations on a per track basis.
>>
>> Also, when I have a video at 640x480 and another one at 1080x720, they
>> both get limited to 2Mbps independently. Even if I know that I have
>> hundreds of Mbits available, I can't currently tell Chrome to give the
>> 1080x720 video 10Mbps, while the 640x480 can continue with 2Mbps.
>>
>> HTH,
>> Silvia.
>



-- 
"Si quieres viajar alrededor del mundo y ser invitado a hablar en un
monton de sitios diferentes, simplemente escribe un sistema operativo
Unix."
 Linus Tordvals, creador del sistema operativo Linux
Received on Friday, 18 October 2013 07:42:00 UTC

This archive was generated by hypermail 2.3.1 : Monday, 23 October 2017 15:19:36 UTC