Hi, I follow your tips,but nothing change. Still I have the same codecs: H.263-1998 and H.264. H263 (rfc 2190) still works only between two pjsip clients. I try to modify h263 poketize and unpacketize in ffmpeg.c but I get only some crash errors when i try to decode it... Any other tips? or could sombody explain how works #define PJMEDIA_HAS_FFMPEG_CODEC 1 flag? and how it can help with h263? BR Andrew >> 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