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using the official guides I already succesfully compiled ffmpeg (with decklink support) on a SMP Debian 4.9.144-3.1.

As the resulting binaries do not work on my Ubuntu 18.04.2 I tried to compile again, using the same guide. I also updated Ubuntu before and the dependencies should all be up to date. Also, folder structure seems OK.

So it actually fails during ffmpeg ./configure, shell spitting out for example:

./ffmpegcompil.sh: 21: ./ffmpegcompil.sh: --enable-libass: not found

config.log does not make me much smarter, it just seems to fail in testing phase, starting with

... zscale_filter='yes' mktemp -u XXXXXX uxtubn test_ld cc test_cc ...

After that, many tests, a few warnings, less errors, then abort without notice in the config.log.

If i remove --enable-libass from the script it will fail with another lib "not found".

How to troubleshoot this? THX!

HERE´S MY SCRIPT:

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 && \ 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="$HOME/bin" \ --enable-nonfree \ --enable-gpl \ --enable-libsrt \ --enable-decklink \ --extra-cflags="-I$HOME/ffmpeg_build/include/decklink" \ --extra-ldflags="-L$HOME/ffmpeg_build/include/decklink" \ --enable-libass \ --enable-libfdk-aac \ --enable-libfreetype \ --enable-libmp3lame \ --enable-libopus \ --enable-libvorbis \ --enable-libvpx \ --enable-libx264 \ --enable-libx265 && \ PATH="$HOME/bin:$PATH" make && \ make install && \ hash -r

derhottevomdorf
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2 Answers2

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You should use the power of APT to get build dependencies for the package:

  1. Enable Source code repositories in Software & Updates (software-properties-gtk)

  2. Install build-dependencies for ffmpeg:

    sudo apt-get build-dep ffmpeg

  3. Proceed with configuring and compilation.

Note: the ffmpeg is already packaged on all Ubuntu versions with wide set of plugins.

N0rbert
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guess what the problem was: I hashed out some of the options in the script (can´t see that above for formatting reasons) which caused the following options not being digested by the configure script. "--enable-libass not found" just meaning it started anew from there on.

What´s the learning from this? No hashes in between command options?

derhottevomdorf
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