So what's the solution? Installing older opencv? 25.07.2019, 17:08, "Paul B Mahol" <one...@gmail.com>: > On 7/25/19, dimaseriy <dimaseriy1...@yandex.ru> wrote: >> I tried >> >> mkdir -p ~/ffmpeg_sources ~/bin >> cd ~/ffmpeg_sources >> wget -O ffmpeg-snapshot.tar.bz2 >> https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 && tar xjvf >> ffmpeg-snapshot.tar.bz2 && cd ffmpeg >> >> but I got >> >> $ PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" >> ./configure --prefix="$HOME/ffmpeg_build" --pkg-config-flags="--static" >> --extra-cflags="-I$HOME/ffmpeg_build/include" >> --extra-ldflags="-L$HOME/ffmpeg_build/lib" --extra-libs="-lpthread -lm" >> --bindir="$HOME/bin" --enable-gpl --enable-nonfree --enable-avresample >> --enable-avisynth --enable-libass --enable-libcaca --enable-libcdio >> --enable-libfontconfig --enable-libfreetype --enable-libfribidi >> --enable-libgsm --enable-libopenjpeg --enable-libopenmpt --enable-libopus >> --enable-libpulse --enable-librubberband --enable-librsvg --enable-libsnappy >> --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora >> --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack >> --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid >> --enable-libzmq --enable-libzvbi --enable-omx --enable-openal >> --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm >> --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv >> --enable-libx264 --enable-shared >> ERROR: libopencv not found >> >> If you think configure made a mistake, make sure you are using the latest >> version from Git. If the latest version fails, report the problem to the >> ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. >> Include the log file "ffbuild/config.log" produced by configure as this will >> help >> solve the problem. >> >> However >> >> $ dpkg -l | grep 'libopencv-core' >> ii libopencv-core-dev:amd64 3.2.0+dfsg-4ubuntu0.1 >> amd64 development files for >> libopencv-core3.2 >> ii libopencv-core3.2:amd64 3.2.0+dfsg-4ubuntu0.1 >> amd64 computer vision core library >> $ dpkg -l | grep 'libopencv-dev' >> ii libopencv-dev 3.2.0+dfsg-4ubuntu0.1 >> amd64 development files for opencv > > Note that from some version onward they dropped C support IIRC, > so you could not have it even if you have it installed. > >> 25.07.2019, 15:04, "Moritz Barsnick" <barsn...@gmx.net>: >>> On Thu, Jul 25, 2019 at 03:34:59 -0400, Ted Park wrote: >>>> > I want to use the ocv filer for ffmpeg. The documentation says: >>>> > >>>> > "To enable this filter, install the libopencv library and headers and >>>> configure FFmpeg with --enable-libopencv .” >>>> >>>> Do what the documentation says? >>>> >>>> > I use ffmpeg from Ubuntu repos. >>>> >>>> You need to “configure FFmpeg with —enable-libopencv” after installing >>>> the library, then compile yourself, or find a ffmpeg with the library >>>> enabled. The ffmpeg from the Ubuntu repo is old. >>> >>> Interestingly, the Ubuntu build is apparently built with >>> "—enable-libopencv", but they managed not to get the "ocv" filter in. >>> >>>> > How do I make this filter available? What packages should I install in >>>> Ubuntu 18.04 (it has many packages called libopencv*) and should I build >>>> ffmpeg from source? >>>> >>>> Try installing the core library then configuring. >>> >>> And the development package as well (so perhaps libopencv-dev and >>> libopencv-core-dev). >>> >>> Moritz >>> _______________________________________________ >>> ffmpeg-user mailing list >>> ffmpeg-user@ffmpeg.org >>> https://ffmpeg.org/mailman/listinfo/ffmpeg-user >>> >>> To unsubscribe, visit link above, or email >>> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user
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