Chrome support for G.729

[Domenico Colella]

Is there any plan to add G.729 support to webrtc (as patents expired on 01-01-2017) ? 

I know that this is not mandatory for Webrtc specs, but G.729 is one of the most used codecs in legacy devices. Though there are a lot of better performing CODECS, as for now they are not yet so widespread on telephony devices: for example in Italy (I do not know if it is the same in other countries) when connecting to PSTN the mandatory codecs are g.729 and g.711 A-Law. 

So, I think that g.729 support is missing, in order to let the browser replace at 100% a "telephone".

Thank you very much.

Regards,

Domenico

[Chen Zhixiang]

I guess the real problem is, G.729 is IP-protected, it cannot be used in open-source codebase?

[PhistucK]

(I am not a lawyer)

Once a codec becomes a standard and is patented and that patent expires and the standard members decide it is a royalty free technology, it seems to me that it is not intellectual-property-protected anymore.

The code for the decoder/encoder itself can be protected if it is not free software or open source software, but since FFMPEG decodes (and encodes, I think) G.729, as far as I know, it means there is an unprotected implementation as well as a royalty free grant for decoding and encoding it, which effectively means that anyone can just use it, I assume.

☆PhistucK

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[Yoši Yoda]

This WAS a problem, but the relevant already expired. G.729 is now officially royalty-free: http://www.sipro.com/G729.html