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Add ffmpeg cli #5865

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01b3f66
Add ffmpeg cli
Alex-PLACET Jul 13, 2026
2553e06
split into several packages
Alex-PLACET Jul 15, 2026
e07e812
Merge remote-tracking branch 'upstream/main' into ffmpeg-cli
Alex-PLACET Jul 15, 2026
0a9546e
fix
Alex-PLACET Jul 15, 2026
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30 changes: 23 additions & 7 deletions recipes/recipes_emscripten/ffmpeg/build.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -12,28 +12,44 @@ export PYTHON="${BUILD_PREFIX}/bin/python3"
# Makefile variable of the same name.
unset SUBDIR

export CFLAGS="-I${PREFIX}/include ${CFLAGS:-}"
export LDFLAGS="-L${PREFIX}/lib ${LDFLAGS:-}"
export CFLAGS="-I${PREFIX}/include -pthread ${CFLAGS:-}"
export LDFLAGS="-L${PREFIX}/lib -pthread ${LDFLAGS:-}"

# llvm-nm avoids the broken packaged emnm Python launcher.
./configure \
--prefix="${PREFIX}" \
--target-os=none --arch=x86_32 --enable-cross-compile \
--disable-asm --disable-stripping --disable-programs \
--target-os=none --arch=wasm --enable-cross-compile \
--disable-stripping \
--disable-doc --disable-debug --disable-runtime-cpudetect \
--disable-autodetect --disable-pthreads --disable-w32threads \
--disable-autodetect --enable-pthreads --disable-w32threads \

@DerThorsten DerThorsten Jul 13, 2026

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are threads absolutely needed?

@Alex-PLACET Alex-PLACET Jul 13, 2026

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Yes, I can't compile the CLI without it

@DerThorsten DerThorsten Jul 13, 2026

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does that mean the pthread symbols are only dragged into the binary or are the libs also have them?

@Alex-PLACET Alex-PLACET Jul 15, 2026

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I updated the recipe to have two pacakges now, one for the libs and another one for the CLI. I can create two packages which don't share the same core and so have the libs without pthread and the CLI with it

--disable-os2threads --disable-ffplay --disable-network \
--enable-static --disable-shared \
--enable-gpl --enable-version3 \
--enable-ffmpeg --enable-ffprobe \
--nm=llvm-nm --ar=emar --ranlib=emranlib \
--cc=emcc --cxx=em++ --objcc=emcc --dep-cc=emcc \
--enable-avcodec --enable-avformat --enable-avutil \
--enable-swscale --enable-swresample \
--enable-avfilter --enable-avdevice \
--enable-protocol=file

make -j"${CPU_COUNT:-4}"
make install
make EXESUF=.js -j"${CPU_COUNT:-4}"
make EXESUF=.js install

# FFmpeg's Emscripten link creates *_g.wasm and copies only the JavaScript
# launcher during install. Give each launcher a stable adjacent wasm file.
for tool in ffmpeg ffprobe; do
if [[ ! -s "${tool}_g.wasm" || ! -s "${PREFIX}/bin/${tool}.js" ]]; then
echo "error: ${tool} CLI was not built; expected ${tool}_g.wasm and ${PREFIX}/bin/${tool}.js" >&2
exit 1
fi
install -Dm755 "${tool}_g.wasm" "${PREFIX}/bin/${tool}.wasm"
sed -i "s/${tool}_g\\.wasm/${tool}.wasm/g" "${PREFIX}/bin/${tool}.js"
if [[ ! -s "${PREFIX}/bin/${tool}.wasm" ]]; then
echo "error: failed to install ${PREFIX}/bin/${tool}.wasm" >&2
exit 1
fi
done

install -Dm644 "${RECIPE_DIR}/cmake/FFmpegConfig.cmake" \
"${PREFIX}/lib/cmake/FFmpeg/FFmpegConfig.cmake"
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4 changes: 4 additions & 0 deletions recipes/recipes_emscripten/ffmpeg/build_tests.sh
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Expand Up @@ -6,6 +6,8 @@ echo "Building FFmpeg tests..."
echo "=========================================="

export PKG_CONFIG_PATH="${PREFIX}/lib/pkgconfig:${PKG_CONFIG_PATH:-}"
export CFLAGS="${CFLAGS:-}"
export LDFLAGS="${LDFLAGS:-}"

mkdir -p build_tests
cd build_tests
Expand All @@ -20,6 +22,8 @@ emmake ninja

echo "Running FFmpeg tests..."
node test_ffmpeg.js
node "${PREFIX}/bin/ffmpeg.js" -version
node "${PREFIX}/bin/ffprobe.js" -version

echo "=========================================="
echo "All FFmpeg tests passed!"
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12 changes: 11 additions & 1 deletion recipes/recipes_emscripten/ffmpeg/recipe.yaml
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Expand Up @@ -11,7 +11,7 @@ source:
sha256: b6863adde98898f42602017462871b5f6333e65aec803fdd7a6308639c52edf3

build:
number: 0
number: 1
script: build.sh

requirements:
Expand All @@ -33,6 +33,16 @@ tests:
- libswresample.a
- libavfilter.a
- libavdevice.a
bin:
# Rattler adds .js and .wasm for Emscripten bin entries.
- ffmpeg
- ffprobe
files:
# Check both members of each Emscripten executable explicitly.
- bin/ffmpeg.js
- bin/ffmpeg.wasm
- bin/ffprobe.js
- bin/ffprobe.wasm
include:
- libavcodec/avcodec.h
- libavformat/avformat.h
Expand Down