Ignores in exiftool read descriptions

lib/pleroma/upload/filter/exiftool/read_description.ex

@@ -33,7 +33,10 @@ defp read_when_empty(current_description, _, _) when is_binary(current_descripti
   defp read_when_empty(_, file, tag) do
     try do
       {tag_content, 0} =
-        System.cmd("exiftool", ["-b", "-s3", tag, file], stderr_to_stdout: true, parallelism: true)
+        System.cmd("exiftool", ["-b", "-s3", tag, file],
+          stderr_to_stdout: false,
+          parallelism: true
+        )
 
       tag_content = String.trim(tag_content)
 

test/pleroma/upload/filter/exiftool/read_description_test.exs

@@ -42,6 +42,33 @@ test "otherwise returns ImageDescription when present" do
              {:ok, :filtered, uploads_after}
   end
 
+  test "Ignores warnings" do
+    uploads = %Pleroma.Upload{
+      name: "image_with_imagedescription_and_caption-abstract_and_stray_data_after.png",
+      content_type: "image/png",
+      path:
+        Path.absname(
+          "test/fixtures/image_with_imagedescription_and_caption-abstract_and_stray_data_after.png"
+        ),
+      tempfile:
+        Path.absname(
+          "test/fixtures/image_with_imagedescription_and_caption-abstract_and_stray_data_after.png"
+        )
+    }
+
+    assert {:ok, :filtered, %{description: "a descriptive white pixel"}} =
+             Filter.Exiftool.ReadDescription.filter(uploads)
+
+    uploads = %Pleroma.Upload{
+      name: "image_with_stray_data_after.png",
+      content_type: "image/png",
+      path: Path.absname("test/fixtures/image_with_stray_data_after.png"),
+      tempfile: Path.absname("test/fixtures/image_with_stray_data_after.png")
+    }
+
+    assert {:ok, :filtered, %{description: nil}} = Filter.Exiftool.ReadDescription.filter(uploads)
+  end
+
   test "otherwise returns iptc:Caption-Abstract when present" do
     upload = %Pleroma.Upload{
       name: "image_with_caption-abstract.jpg",