Please add patch from: http://www.salyens.com/?page=downloads for H.263/rfc2190 compliant streaming to call to Netmeeting and other H.263 compliant system successfully. Reproducible: Always Steps to Reproduce: 1. 2. 3.
I'm assuming your talking about patching media-video/ffmpeg? Please make this clear in bug reports.
I can't fine what is really requested. Anyway H.263 should be already present in newer ffmpeg if that's the problem. Feel free to reopen the bug if more detailed info are available.