Hi all, I try to compile pjsip with x264 video support with msvc compiler. My steps is: 1. Download/install msys and mingw 4.7.4. 2. Download and compile yasm. From msys: ./configure --prefix=../build && make && make install (all ok) 3. Download and compile x264. From msys: Add yasm to PATH. ./configure --prefix=../build --enable-static --enable-win32thread && make && make install (all ok) 4. Download and compile ffmpeg. From msys: ./configure --prefix=../build --enable-shared --enable-gpl --enable-memalign-hack --enable-libx264 --extra-cflag="-I../build/include" --extra-ldflags="-L../build/lib" --cpu=i686 && make && make install (all ok) 5. Make ffmpeg *lib files. From msvc command prompt: foreach def: lib /machine:i386 /def:name.def /out:name.lib (all ok) 6. Download and compile sdl. Run solution->build. (all ok) 7. Download and compile pjsip. Add to pjproject additional includes to sdl/ffmpeg, add additional libraries sdl/ffmpeg and path to libraries. Set up release build->compile. (all ok) 8. Add to qt(5.1.1) pro file: sockets_ole_etc.lib $$LIB_PATH/all_ffmpeg.lib $$LIB_PATH/sdl.lib $$LIB_PATH/libpjproject.lib its compile just with warning(LINK: 4098 MSVRT /nodefault:library) and when i try run. its crash with error code -1073741515 Guys i need your help. What am I doing wrong? -- Best Regards, R. Savchenko.