Le lundi 29 juin 2015 21:46:25 UTC+2, Adam Roach a écrit :
> I think there's some confusion here.
> 
> Ethan and "Daasoundz DJ" are talking about Hello.
> 
> Byron and Randell are talking about WebRTC more generally.
> 
> Daasoundz: The confusion probably arises from the fact that you say 
> you're testing "your webapp" and that you're "using Firefox Hello" to do 
> so. I have no idea how you plan to make this work, but the current 
> design of Hello doesn't really contemplate interacting with non-Hello 
> endpoints, and I can think of a large handful of problems you're going 
> to run into in trying to do so. (To be clear, there is still a desire -- 
> at least, among some people -- to eventually federate Hello with other 
> clients, but that's way beyond our planning horizon for now.)
> 
> I think you need to give a more detailed explanation of what you're 
> trying to accomplish before anyone on this list can provide you with 
> useful answers.
> 
> /a
> 
> On 6/29/15 09:37, Randell Jesup wrote:
> > On 6/29/2015 2:38 AM, Daasoundz DJ wrote:
> >> Le vendredi 26 juin 2015 17:21:11 UTC+2, Byron Campen a écrit :
> >>> You can also rewrite the local SDP to alter the priority.
> >
> >> It's an idiot question but ... how can I rewrite the local SDP ? 
> >> and/or where do I find it ?
> >
> > After you get the offer (from createOffer) or receive it (from the 
> > other end), modify the m=audio line in offer.sdp to put the payload 
> > number in the a=rtpmap line for G722 before all other audio codecs.
> >
> > i.e.
> > ...
> > m=audio <number> <transport> <list of payload values>
> > ...
> > a=rtpmap:<payload> G722/8000/1 (note: the /1 is optional)
> > <other a=rtpmap's>
> >
> > You want <payload> to be the first in the list of payload values in 
> > the m=audio line.
> >
> > It's all just (careful) string manipulation.  Don't assume any 
> > particular number will be used for <payload>!
> >
> 
> 
> -- 
> Adam Roach
> Principal Platform Engineer
> [email protected]
> +1 650 903 0800 x863

I'm using 2 officials webRTC-app : Hello Firefox, apprtc
And 2 homemade webrtc app from a traineeship then another one developped by 
colleagues.
The 2 home-made's app have the same problem : When I fiddle de resolution I 
don't have audio. And when I don't change de resolution, the audio works.
I have to make subjective tests to compare VP8 vs. H.264 & opus vs. G.722 (or 
G.711) with different kinds of profils :
- injecting 1080p / 720p / VGA contents (with audio) without a Netdisturb (to 
add some lags, jitter...) with VP8 & opus,
- Same operation with H.264 & G.722,
- Same operation with a Netdisturb using VP8 & opus,
- Same operation with a Netdisturb using H.264 & G.722.

All these op' are recorded for subjective tests. I wanted to use Firefox Hello 
for H.264. but I can't manage the resolution and I don't really know how to 
force G.722.
That's why I'm asking how to do it. 
My colleagues are working on a new version of the home-made webrtc app to force 
the use of H.264 & G.722 and they fixed the bug of the audio.
So at the moment, I'm waiting if it's ok or not.


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