diff --git a/tutorial/t8.par b/tutorial/t8.par
index 33ac56a913ae8f18bff02e6cda20d8e4459c9564..66b9d984c95d8e4520723f72bbe15c3ab26e5f02 100644
--- a/tutorial/t8.par
+++ b/tutorial/t8.par
@@ -6,6 +6,7 @@ PATTERN          I
 # PATTERN          IBBBP
 # PATTERN          IBBPBBPBBPBBPBB
 BASE_FILE_FORMAT JPEG
+# BASE_FILE_FORMAT PPM
 GOP_SIZE         30
 SLICES_PER_FRAME 1
 PIXEL            HALF
@@ -24,5 +25,6 @@ INPUT_CONVERT   *
 INPUT_DIR       .
 INPUT
 t8-*.jpg [01-50]
+# t8-*.ppm [01-50]
 END_INPUT