Hi, I follow exactly what Samuel post in his project https://code.google.com/p/siphon/wiki/VIdeoSupport So far, I have 1. libyuv compiled at /Users/me/libyuv/include and /Users/me/libyuv/lib 2. libx264 and ffmpeg compiled at /Users/me/x264/include and /Users/me/x264/lib 3. I autoconf the aconfigure When I run ./configure-iphone --prefix=/Users/me/libyuv --with-ffmpeg=/Users/me/x264 --with-libyuv=/Users/me/libyuv But I receive "libyuv library not found, video support disabled" ??? And when I make clean && make && make install. I receveive ../src/pjmedia/ffmpeg_util.h:53: warning: ?enum CodecID? declared inside parameter list ../src/pjmedia/ffmpeg_util.c:65: error: field ?codec_id? has incomplete type ../src/pjmedia/ffmpeg_util.c:169: error: conflicting types for ?pjmedia_format_id_to_CodecID? ../src/pjmedia/ffmpeg_util.h:50: error: previous declaration of ?pjmedia_format_id_to_CodecID? was here ../src/pjmedia/ffmpeg_util.c: In function ?pjmedia_format_id_to_CodecID?: ../src/pjmedia/ffmpeg_util.c:173: warning: comparison between pointer and integer ../src/pjmedia/ffmpeg_util.c:174: error: dereferencing pointer to incomplete type ../src/pjmedia/ffmpeg_util.c:174: warning: statement with no effect ../src/pjmedia/ffmpeg_util.c:179: error: dereferencing pointer to incomplete type ../src/pjmedia/ffmpeg_util.c:179: warning: statement with no effect ../src/pjmedia/ffmpeg_util.c: At top level: ../src/pjmedia/ffmpeg_util.c:183: error: parameter 1 (?codec_id?) has incomplete type make[2]: *** [output/pjmedia-arm-apple-darwin9/ffmpeg_util.o] Error 1 make[1]: *** [pjmedia] Error 2 make: *** [all] Error 1 Please help -- Khoa Pham -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130520/b0c8f92b/attachment-0001.html>