emscripten_docker/ffmpeg_wasm/build_with_docker.sh

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#!/bin/bash -x
#https://jeromewu.github.io/build-ffmpeg-webassembly-version-part-2-compile-with-emscripten/
FFMPEG_VERSION=n4.4
EM_VERSION=1.39.18-upstream
if [ ! -d ffmpeg ]; then
git clone --depth 1 --branch $FFMPEG_VERSION https://github.com/FFmpeg/FFmpeg ffmpeg
fi
cp build.sh ffmpeg/build.sh
cd ffmpeg
docker pull trzeci/emscripten:$EM_VERSION
docker run \
-v $PWD:/src \
-v $PWD/cache-wasm:/emsdk_portable/.data/cache/wasm \
trzeci/emscripten:$EM_VERSION \
sh -c 'bash ./build.sh'