I'm doing pjsip video with ffmpeg h263 on iOS AFAIF, h263 only work with I420, is it right? Then what ffmpeg function does pjsip use to encode/decode this I420 frame? AFAIK, pjsip use swscale to convert I420 back to BGRA, is it right? Thanks -- Khoa Pham HCMC University of Science www.fantageek.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130617/d80e668b/attachment-0001.html>