Re: [Opalvoip-user] How to change rates of multi-rate codecs?

[Leandro G. <lle...@gm...>]

Hi,

And what about Speex? Could you say whether it allow for on the fly changes?

Regards,

Leandro


2011/8/24 Robert Jongbloed <ro...@vo...>:
> That depends. Some codecs need a full shut down and restart, e.g. G.726
>
>
>
> Others you can theoretically change using
> OpalMediaStream::UpdateMediaFormat() and adjusting a suitable media option.
> Video bit rate is adjusted this way in OpenPhone.
>
>
>
> But, it depends on if the plug in has implemented the feature. A quick look
> at OPAL built in iLBC and GSM-AMR codecs shows they currently can only be
> set at the start of operation. They do not currently allow for on the fly
> changes. No one has needed them before!
>
>
>
> Robert Jongbloed
>
> OPAL/OpenH323/PTLib Architect and Co-founder.
>
>
>
> From: Thiago Vianna [mailto:thi...@gm...]
> Sent: Wednesday, 24 August 2011 10:48 AM
> To: opa...@li...
> Subject: [Opalvoip-user] How to change rates of multi-rate codecs?
>
>
>
> Hi,
>
> How can I change the rate of a multi-rate codec, like GSM-AMR or iLBC, on a
> ongoing call?
>
> Best Regards,
>
> Thiago Vianna
>
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