I agree

H323plus also supports H.263 and H.264 plugins and implementers can choose the SIP stack that they want to bolt on, on the other side.  I think Opal maybe a good choice if you don’t already have a tried and tested SIP implementation flavor or don’t want to deal with the miriad of “Subject To Interpretation Protocol” implementations out there to convert. Technically yes H323plus can be used for a signaling only gateway but in reality in this instance, media will probably be needed to be proxied possibly even transcoded! to fix bad/poor SIP video implementations.

Simon

From: h323plus-bounces@lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com] On Behalf Of chr_bc
Sent: 14 March 2012 22:46
To: Diego Carvalho
Cc: h323plus@lists.packetizer.com
Subject: Re: [h323plus] H323-SIP Gateway with H264 Support

you can use the latest version of opal. Its plugin contains H.263,H.263+,and H.264. I also work on h323-sip gateway. And it really works well!

At 2012-03-14 01:04:50,"Diego Carvalho" <diego.cdomingos2010@gmail.com> wrote:

Hi all,
I'm working on a h323-sip gateway with video (H264) support and I'm facing some problems. I'm new with H323plus and with h323 protocol itself (I'm learning as I go) so excuse me if I say something stupid.
First of all, I believe that the stack can be used to build a gateway but it seems that it's more focused on terminals. Am I right? So is it possible or not to build a gateway using it?
Second, there is no native support for H264. The documentation shows the class hierarchy. For audio we have, for instance, H323Cabability -> H323RealTimeCapability -> H323AudioCapability -> H323_G711Cabability but we don't have H323Cabability -> H323RealTimeCapability -> H323VideoCapability -> H323_H264Cabability. I tried to create this one, extending from H323Cabability -> H323RealTimeCapability -> H323VideoCapability -> H323GenericVideoCabability and then I discovered that I would need to override a function called CreateCodec to return a codec that handles the video. But I don't want to handle the RTP media. I just want to put H264 in the terminal capability set and establish a connection in a way that the H323 and SIP terminals can exchange the media directly. I've heard about a H264 plugin but it seems that it is for handling the media, so I don't know if it fits my purpose. How can I achieve this? Is there any plan to support H264 natively on H323plus? Also I need to get the remote RTP port. The only way I found to do this is trough H323Connection::OnStartLocicalChannel but this is called after a channel to handle the data is created and again, I don't want to handle the RTP data. I appreciate any help. Thanks.