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@@ -72,4 +72,29 @@ node ./test.js
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上方安装 `emsdk` 参考于 [https://github.darkgod.online/docs/emscripten/ffmpeg](https://github.darkgod.online/docs/emscripten/ffmpeg)
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## 编译ffmpeg
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+精简编译,只保留 `h264` 解码器
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+
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+```
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+
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+ emconfigure ./configure --cc="emcc" --cxx="em++" --ar="emar" --ranlib="emranlib" --prefix=$(pwd)/../ffmpeg-wasm/ffmpeg-lite --enable-cross-compile --target-os=none --arch=x86_32 --cpu=generic \
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+ --enable-gpl --enable-version3 \
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+ --disable-swresample --disable-postproc --disable-logging --disable-everything \
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+ --disable-programs --disable-asm --disable-doc --disable-network --disable-debug \--disable-iconv --disable-sdl2 \
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+ --disable-avdevice \
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+ --disable-avformat \
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+ --disable-avfilter \
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+ --disable-decoders \
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+ --disable-encoders \
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+ --disable-hwaccels \
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+ --disable-demuxers \
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+ --disable-muxers \
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+ --disable-parsers \
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+ --disable-protocols \
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+ --disable-bsfs \
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+ --disable-indevs \
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+ --disable-outdevs \
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+ --disable-filters \
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+ --enable-decoder=h264 \
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+ --enable-parser=h264
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+```
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