[FFmpeg-user] Compiling ffmpeg with an output device (Blackmagick Decklink)

[Gang Liu]

# with decklink, centos 6.x
scl enable devtoolset-3 bash


PKG_CONFIG_PATH=$PKG_CONFIG_PATH:"$HOME/ffmpeg/build.static/lib/pkgconfig"
./configure --prefix="$HOME/ffmpeg/build.static"
--pkg-config-flags="--static"
--extra-cflags="-I$HOME/ffmpeg/build.static/include
-I$HOME/Downloads/Blackmagic_DeckLink_SDK_10.8.5/Linux/include/"
--extra-ldflags="-L$HOME/ffmpeg/build.static/lib
-L$HOME/Downloads/Blackmagic_DeckLink_SDK_10.8.5/Linux/include/"
--extra-libs=-lpthread --bindir="$HOME/ffmpeg/bin.static" --enable-gpl
--enable-version3 --enable-nonfree --enable-libfdk_aac --enable-fontconfig
--enable-libfreetype --enable-libmp3lame --enable-libopus
--enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
--enable-decklink --enable-librtmp --enable-openssl

On Sat, Apr 14, 2018 at 5:22 AM, David Di Biase <david at pilotinteractive.ca>
wrote:

> I've gone through the ffmpeg compile tutorial and have managed to get it
> working as expected. The build looks stable and usable. However now I need
> to include the Blackmagick Decklink SDK in the build using the
> --enable-decklink flag.
>
> *cd ~/ffmpeg_sources && \*
> *wget -O ffmpeg-snapshot.tar.bz2
> https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
> <https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2> && \*
> *tar xjvf ffmpeg-snapshot.tar.bz2 && \*
> *cd ffmpeg && \*
> *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="$HOME/bin" \*
> *  --enable-gpl \*
> *  --enable-libass \*
> *  --enable-libfdk-aac \*
> *  --enable-libfreetype \*
> *  --enable-libmp3lame \*
> *  --enable-libopus \*
> *  --enable-libtheora \*
> *  --enable-libvorbis \*
> *  --enable-libvpx \*
> *  --enable-libx264 \*
> *  --enable-libx265 \*
> *  --enable-decklink \*
> *  --enable-nonfree && \*
> *PATH="$HOME/bin:$PATH" make && \*
> *make install && \*
> *hash -r*
>
> However after a few seconds it fails and reports that it cannot find the
> decklink libs:
>
> *ERROR: DeckLinkAPI.h 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 at 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.
> I've placed the libraries in the same folder specified by extra-cflags and
> in the ldflags. So basically the Decklink SDK is available here and here:
>
> *~/ffmpeg_build/include/decklink*
> *~/ffmpeg_build/lib/decklink*
>
> That's not apparently how you do it though (new to ffmpeg). I'm wondering
> where I should be putting the SDK source to ensure the compiler can read
> it.
>
> Thanks.
>
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