Add portable build FFmpeg downloads

portable/Dockerfile

@@ -26,6 +26,7 @@ RUN apt-get update -y \
  && DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC \
     apt-get install --no-install-recommends -y \
     wget \
+    unzip \
     debhelper \
     gnupg \
     devscripts \

portable/build.sh

@@ -5,6 +5,10 @@
 set -o errexit
 set -o xtrace
 
+# Set global variables
+REPOSITORY_URI="https://repo.jellyfin.org"
+FFMPEG_VERSION="6.x"
+
 # Create the intermediate build dir
 BUILD_DIR="/build"
 mkdir -p ${BUILD_DIR}/jellyfin
@@ -43,6 +47,47 @@ else
 fi
 
 pushd ${BUILD_DIR}
+
+pushd jellyfin
+# Fetch any additional package(s) needed here (i.e. FFmpeg)
+# This is a hack because the ffmpeg naming is very inconsistent and we need to find the right URL(s) from the repo browser
+case ${BUILD_TYPE}-${PACKAGE_ARCH} in
+    linux-amd64*)
+        FFMPEG_PATH=$( curl ${REPOSITORY_URI}/?path=/ffmpeg/linux/latest-${FFMPEG_VERSION}/amd64 | grep -o "/files/.*_portable_linux64-gpl.tar.xz'" | sed "s/'$//" )
+        curl --location --output ffmpeg.tar.xz ${REPOSITORY_URI}${FFMPEG_PATH}
+        tar -xvJf ffmpeg.tar.xz
+        rm ffmpeg.tar.xz
+    ;;
+    linux-arm64*)
+        FFMPEG_PATH=$( curl ${REPOSITORY_URI}/?path=/ffmpeg/linux/latest-${FFMPEG_VERSION}/arm64 | grep -o "/files/.*_portable_linuxarm64-gpl.tar.xz'" | sed "s/'$//" )
+        curl --location --output ffmpeg.tar.xz ${REPOSITORY_URI}${FFMPEG_PATH}
+        tar -xvJf ffmpeg.tar.xz
+        rm ffmpeg.tar.xz
+    ;;
+    macos-amd64)
+        FFMPEG_PATH=$( curl ${REPOSITORY_URI}/?path=/ffmpeg/macos/latest-${FFMPEG_VERSION}/x86_64 | grep -o "/files/.*_portable_mac64-gpl.tar.xz'" | sed "s/'$//" )
+        curl --location --output ffmpeg.tar.xz ${REPOSITORY_URI}${FFMPEG_PATH}
+        tar -xvJf ffmpeg.tar.xz
+        rm ffmpeg.tar.xz
+    ;;
+    macos-arm64)
+        FFMPEG_PATH=$( curl ${REPOSITORY_URI}/?path=/ffmpeg/macos/latest-${FFMPEG_VERSION}/arm64 | grep -o "/files/.*_portable_macarm64-gpl.tar.xz'" | sed "s/'$//" )
+        curl --location --output ffmpeg.tar.xz ${REPOSITORY_URI}${FFMPEG_PATH}
+        tar -xvJf ffmpeg.tar.xz
+        rm ffmpeg.tar.xz
+    ;;
+    windows-amd64)
+        FFMPEG_PATH=$( curl ${REPOSITORY_URI}/?path=/ffmpeg/windows/latest-${FFMPEG_VERSION}/win64 | grep -o "/files/.*-portable_win64.zip'" | sed "s/'$//" )
+        curl --location --output ffmpeg.zip ${REPOSITORY_URI}${FFMPEG_PATH}
+        unzip ffmpeg.zip
+        rm ffmpeg.zip
+    ;;
+    *)
+        true
+    ;;
+esac
+popd
+
 for ARCHIVE_TYPE in $( tr ',' '\n' <<<"${ARCHIVE_TYPES}" ); do
     case ${ARCHIVE_TYPE} in
         targz)