diff --git a/ffmpeg/build.sh b/ffmpeg/build.sh
new file mode 100644
index 0000000..cc037c1
--- /dev/null
+++ b/ffmpeg/build.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+set -e
+
+# ANDROID_NDK_ROOT and ANDROID_SDK_ROOT need to be set (possibly to ~/Android/Sdk/ndk/##.#.#######/ and ~/Android/Sdk respectively)
+
+ARCH=x86_64
+VERSION=v5.1.LTS
+
+git clone --depth 1 --branch $VERSION https://github.com/arthenica/ffmpeg-kit.git
+cd ffmpeg-kit
+
+./android.sh --enable-x264 --enable-libvpx --enable-gpl --disable-arm-v7a{,-neon} --disable-arm64-v8a --disable-x86 --no-archive
+
+cd ..
+
+OUT_DIRECTORY=ffmpeg-android-$VERSION-$ARCH
+mkdir $OUT_DIRECTORY
+cp -r ffmpeg-kit/prebuilt/android-x86_64/{ffmpeg,libvpx,x264}/* $OUT_DIRECTORY/
+cp $0 $OUT_DIRECTORY
+tar c $OUT_DIRECTORY | xz -T0 > $OUT_DIRECTORY.tar.xz
+
diff --git a/ffmpeg/ffmpeg-android-v4.4.LTS.tar.xz b/ffmpeg/ffmpeg-android-v4.4.LTS.tar.xz
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diff --git a/ffmpeg/ffmpeg-android-v5.1.LTS-aarch64.tar.xz b/ffmpeg/ffmpeg-android-v5.1.LTS-aarch64.tar.xz
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diff --git a/ffmpeg/ffmpeg-android-v5.1.LTS-x86_64.tar.xz b/ffmpeg/ffmpeg-android-v5.1.LTS-x86_64.tar.xz
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diff --git a/ffmpeg/ffmpeg-android-v5.1.LTS.tar.xz b/ffmpeg/ffmpeg-android-v5.1.LTS.tar.xz
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