+##################
+# Install ffmpeg #
+##################
+
+# Every package should define these variables
+$pkg_cmd_name = "ffmpeg"
+
+$pkg_dst_cmd = "$Env:USERPROFILE\.local\bin\ffmpeg.exe"
+$pkg_dst = "$pkg_dst_cmd"
+
+$pkg_src_cmd = "$Env:USERPROFILE\.local\opt\ffmpeg-v$Env:WEBI_VERSION\bin\ffmpeg.exe"
+$pkg_src_bin = "$Env:USERPROFILE\.local\opt\ffmpeg-v$Env:WEBI_VERSION\bin"
+$pkg_src_dir = "$Env:USERPROFILE\.local\opt\ffmpeg-v$Env:WEBI_VERSION"
+$pkg_src = "$pkg_src_cmd"
+
+$pkg_download = "$Env:USERPROFILE\Downloads\$Env:WEBI_PKG_FILE"
+
+# Fetch archive
+IF (!(Test-Path -Path "$Env:USERPROFILE\Downloads\$Env:WEBI_PKG_FILE"))
+{
+ # TODO: arch detection
+ echo "Downloading ffmpeg from $Env:WEBI_PKG_URL to $pkg_download"
+ & curl.exe -A "$Env:WEBI_UA" -fsSL "$Env:WEBI_PKG_URL" -o "$pkg_download.part"
+ Move-Item -Path "$pkg_download.part" -Destination "$pkg_download" -Force
+}
+
+IF (!(Test-Path -Path "$pkg_src_cmd"))
+{
+ echo "Installing ffmpeg"
+
+ # TODO: create package-specific temp directory
+ # Enter tmp
+ pushd .local\tmp
+
+ # Remove any leftover tmp cruft
+ Remove-Item -Path ".\win32-*" -Recurse -ErrorAction Ignore
+
+ # Settle unpacked archive into place
+ echo "Install Location: $pkg_src_cmd"
+ New-Item "$pkg_src_bin" -ItemType Directory -Force | out-null
+ Move-Item -Path "$pkg_download" -Destination "$pkg_src_cmd" -Force
+
+ # Exit tmp
+ popd
+}
+
+echo "Copying into '$pkg_dst_cmd' from '$pkg_src_cmd'"
+Remove-Item -Path "$pkg_dst_cmd" -Recurse -ErrorAction Ignore | out-null
+Copy-Item -Path "$pkg_src" -Destination "$pkg_dst" -Recurse