Dear all, I has compiled ffmpeg from source as per instructed by :
https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu When I want to compile my code, I get this error: /home/dfalahati/*ffmpeg_sources*/ffmpeg/libavutil/hwcontext_vaapi.c:1275: error: undefined reference to `*vaGetDisplay*' I have also added the following static libs: LIBS += -L/home/dfalahati/*ffmpeg_build*/lib -lavdevice -lavfilter -lavformat -lavcodec -lx264 -lx265 -lpostproc -lvpx -lmp3lame -lfdk-aac -lswresample -lswscale -lavutil -lopus -lyasm LIBS += -L/usr/local/lib -lm -lz -ldl -lvorbis -lass -ltheora \ -lX11 -lasound -lpthread -lz -pthread -lXv \ -lvdpau -lva-drm -lva -lxcb-shm -lxcb-xfixes \ -lxcb -lXau -lXdmcp \ -lrt -lvorbisenc -ltheoraenc -ltheoradec -logg \ -lfontconfig -lfribidi -lexpat -lfreetype -lpng12 -llzma -lnuma \ -lpulse-simple -lpulse -lstdc++ -lrt -lharfbuzz -llzma -lbz2 FYI, I am using ubuntu and I use QtCreator as my favorite C/C++ IDE. Yours, Davood
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