Hi, Frogersik! H263 codec will works then PJSIP will be build with next defines #define PJMEDIA_HAS_VIDEO 1 #define PJMEDIA_HAS_FFMPEG 1 #define PJMEDIA_HAS_FFMPEG_CODEC 1 #define PJMEDIA_VIDEO_DEV_HAS_SDL 1 #define PJMEDIA_VIDEO_DEV_HAS_DSHOW 1 #define PJMEDIA_HAS_FFMPEG_CODEC_H264 1 in file pjproject-2.0-beta\pjlib\include\pj\config_site.h last define needed only for H264. Remove this line if you not need it. If you have just source code of PJPROJECT without any changes - you will have a lot of errors. You have to add ffmpeg libraries, SDL library, directX library, direct show library. Do not forget to add respectively header files to projects include directories... You can use this my thread wtih video configuration http://comments.gmane.org/gmane.comp.voip.pjsip/15112 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120328/055078aa/attachment.html>