diff --git a/ffmpeg.c b/ffmpeg.c
index 7769bbfece..b9397dbdf6 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2019,7 +2019,7 @@ static void opt_format(const char *arg)
     /* compatibility stuff for pgmyuv */
     if (!strcmp(arg, "pgmyuv")) {
         pgmyuv_compatibility_hack=1;
-        opt_image_format(arg);
+//        opt_image_format(arg);
         arg = "image2";
     }
 
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index d1fc72a949..c91c55cfa3 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -113,17 +113,21 @@ void av_register_all(void)
 
 #ifdef CONFIG_ENCODERS
     /* image formats */
+#if 0
     av_register_image_format(&pnm_image_format);
     av_register_image_format(&pbm_image_format);
     av_register_image_format(&pgm_image_format);
     av_register_image_format(&ppm_image_format);
     av_register_image_format(&pam_image_format);
     av_register_image_format(&pgmyuv_image_format);
+#endif
     av_register_image_format(&yuv_image_format);
+#if 0
 #ifdef CONFIG_ZLIB
     av_register_image_format(&png_image_format);
 #endif
     av_register_image_format(&jpeg_image_format);
+#endif
     av_register_image_format(&gif_image_format);
     av_register_image_format(&sgi_image_format);
 #endif //CONFIG_ENCODERS