From 93cca42e2056ef323e2a4bc60bef04159581f4f7 Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <james@purplerock.ca>
Date: Tue, 25 Jan 2022 00:19:23 -0800
Subject: [PATCH] optimize: don't try to optimize an image we can't save

---
 src/ocrmypdf/optimize.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ocrmypdf/optimize.py b/src/ocrmypdf/optimize.py
index 49faf414..352767cf 100644
--- a/src/ocrmypdf/optimize.py
+++ b/src/ocrmypdf/optimize.py
@@ -203,7 +203,8 @@ def extract_image_generic(
         try:
             pim.as_pil_image().save(png_name(root, xref))
         except NotImplementedError:
-            log.warning(f"PDF contains some images specifying non-CMYK inks. Ignoring it.")
+            log.warning("PDF contains an atypical image that cannot be optimized.")
+            return None
         return XrefExt(xref, '.png')
     elif (
         not pim.indexed