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initial version

OpenCV uses an older version of FFMPEG despite the latest being installed in bin

CMAKE

sudo cmake -D WITH_NVCUVID=ON -D BUILD_DOCS=ON -D WITH_XINE=ON -D WITH_CUDA=ON -D WITH_OPENGL=ON -D WITH_TBB=ON -D WITH_OPENNI=OFF -D BUILD_EXAMPLES=ON -D WITH_OPENCL=ON -D CMAKE_BUILD_TYPE=RELEASE -D OPENCV_EXTRA_MODULES_PATH=../modules/opencv_contrib-master/modules/ -D ENABLE_FAST_MATH=1 -D WITH_QT=ON -D CUDA_FAST_MATH=1 -D WITH_CUBLAS=1 -D CMAKE_INSTALL_PREFIX=/usr/local/ ..

Output

--   Video I/O:
--     DC1394 1.x:                  NO
--     DC1394 2.x:                  YES (ver 2.2.1)
--     FFMPEG:                      YES
--       codec:                     YES (ver 54.35.0)
--       format:                    YES (ver 54.20.4)
--       util:                      YES (ver 52.3.0)
--       swscale:                   YES (ver 2.1.1)
--       resample:                  NO
--       gentoo-style:              YES

ffmpeg -version

ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg developers
built on Nov 22 2014 17:07:19 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --prefix=/usr --extra-version='1ubuntu1~trusty6' --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libx265 --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv
libavutil      54.  7.100 / 54.  7.100
libavcodec     56.  1.100 / 56.  1.100
libavformat    56.  4.101 / 56.  4.101
libavdevice    56.  0.100 / 56.  0.100
libavfilter     5.  1.100 /  5.  1.100
libavresample   2.  1.  0 /  2.  1.  0
libswscale      3.  0.100 /  3.  0.100
libswresample   1.  1.100 /  1.  1.100
libpostproc    53.  0.100 / 53.  0.100

Notice :

codec is 54.35.0 instead of 56.1.100
format is 54.20.4 instead of 56.4.101
util is 52.3.0 instead of 54.7.100

Is there a way to force opencv to use the latest version ? I tried uninstalling ffmpeg, reinstalling and rebuilding CV but it keeps finding the older version