Tora Blog / Tech memo: ARCH LINUX ffmpeg build script with avisynthplus plugin

build avisynthplus

cd ~/
mkdir apps
cd apps
git clone --recursive https://github.com/AviSynth/AviSynthPlus
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=$HOME/apps/AviSynthPlusBin ..
make -j10
make install

run ffmpeg-build-script

Just running build-ffmpeg alone would probably result in various kinds of errors.

Here, we’re doing following tweaks:

Add -fpermissive to c and c++ flags to fix some build errors for the latest gcc/g++.
Compile and install cargo-c outside the build-ffmpeg build environment to avoid libssl linking issue.
Add /opt/cuda/include/ and /opt/cuda/lib/ to the include and library path for building the ffmpeg binary. This is because the script is wrirtten for Ubuntu system, and cuda installation path is different between Arch and Ubuntu.
Add AviSynthPlusBin path we’ve made in the previous section.

build ffmpeg and other libs

# install cuda and build tools
sudo pacman -S cuda base-devel curl

# install rustup to local
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

. "$HOME/.cargo/env"
rustup update

# check rust version
rustc --version
cargo install cargo-cache

# preinstall cargo-c to work around with ssl 1.1 vs 3 linking issue
cargo uninstall cargo-c
cargo install cargo-c

# fix build error for some build dependencies
export CFLAGS="-fpermissive"
export CPPFLAGS="$CFLAGS"
export CXXFLAGS="$CXXFLAGS"

# clear cargo cache
cargo cache -a

# Optionally, run `git clean -dfx && git pull` to clear all the previous build files and fetch upstream code

# Here, add
#   -I/opt/cuda/include/
#   -I$HOME/apps/AviSynthPlusBin/include/
# to CFLAGS and add
#   -L/opt/cuda/lib/
#   -L$HOME/apps/AviSynthPlusBin/lib/ 
# to LDFLAGS and add
#   --enable-avisynth
# to the configure option.
vim ./build-ffmpeg

./build-ffmpeg --build --enable-gpl-and-non-free

echo "Version()" > test.avs

LD_LIBRARY_PATH="$HOME/apps/AviSynthPlusBin/lib/" ~/.local/bin/ffmpeg -f avisynth -i ./test.avs -profile:v high -vcodec h264_nvenc -pix_fmt yuv420p -cq:v 10 test.mov

build-ffmpeg patch script

diff --git a/build-ffmpeg b/build-ffmpeg
index b277711..d459dfb 100755
--- a/build-ffmpeg
+++ b/build-ffmpeg
@@ -9,12 +9,12 @@ SCRIPT_VERSION=1.54
 CWD=$(pwd)
 PACKAGES="$CWD/packages"
 WORKSPACE="$CWD/workspace"
-CFLAGS="-I$WORKSPACE/include -Wno-int-conversion"
-LDFLAGS="-L$WORKSPACE/lib"
+CFLAGS="-I/opt/cuda/include/ -I$HOME/apps/AviSynthPlusBin/include/ -I$WORKSPACE/include -Wno-int-conversion"
+LDFLAGS="-L/opt/cuda/lib/ -L$HOME/apps/AviSynthPlusBin/lib/ -L$WORKSPACE/lib"
 LDEXEFLAGS=""
 EXTRALIBS="-ldl -lpthread -lm -lz"
 MACOS_SILICON=false
-CONFIGURE_OPTIONS=()
+CONFIGURE_OPTIONS=("--enable-avisynth")
 NONFREE_AND_GPL=false
 DISABLE_LV2=false
 LATEST=false

maybe docker is better way??

Maybe just running Dockerfile, with tweaks to also build AviSynthPlus, is better way, although imnot 100% sure that binaries made in Ubuntu works perfectly fine in Arch…