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diff --git a/lib/pleroma/helpers/media_helper.ex b/lib/pleroma/helpers/media_helper.ex
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+++ b/lib/pleroma/helpers/media_helper.ex
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Helpers.MediaHelper do
+  @moduledoc """
+  Handles common media-related operations.
+  """
+
+  def ffmpeg_resize_remote(uri, %{max_width: max_width, max_height: max_height}) do
+    cmd = ~s"""
+    curl -L "#{uri}" |
+    ffmpeg -i pipe:0 -f lavfi -i color=c=white \
+      -filter_complex "[0:v] scale='min(#{max_width},iw)':'min(#{max_height},ih)': \
+        force_original_aspect_ratio=decrease [scaled]; \
+        [1][scaled] scale2ref [bg][img]; [bg] setsar=1 [bg]; [bg][img] overlay=shortest=1" \
+      -f image2 -vcodec mjpeg -frames:v 1 pipe:1 | \
+    cat
+    """
+
+    with {:ok, [stdout: stdout_list]} <- Pleroma.Exec.cmd(cmd) do
+      {:ok, Enum.join(stdout_list)}
+    end
+  end
+end