Error message modification

diff --git a/mj2/mj2_to_frames.c b/mj2/mj2_to_frames.c
index f5b222af2d02f7294ae2dad4e8d88ec58ba33590..b5bca7a46520dabbdce47846efaaf7ec9788a069 100644 (file)
--- a/mj2/mj2_to_frames.c
+++ b/mj2/mj2_to_frames.c
@@ -90,8 +90,11 @@ int main(int argc, char **argv)
   if (!((S1 == 'y' && S2 == 'u' && S3 == 'v')
        || (S1 == 'Y' && S2 == 'U' && S3 == 'V'))) {
     fprintf(stderr,
-           "!! Unrecognized format for infile : %c%c%c [accept only *.yuv] !!\n\n",
+           "!! Unrecognized format for outfile : %c%c%c [accept only *.yuv] !!\n",
            S1, S2, S3);
+    fprintf(stderr,
+           "usage: j2k-file image-file -reduce n (<- optional)\n\n");
+
     return 1;
   }
 
@@ -129,6 +132,9 @@ int main(int argc, char **argv)
     fprintf(stderr,
            "mj2_to_frames : Unknown format image *.%c%c%c [only *.mj2]!! \n",
            S1, S2, S3);
+    fprintf(stderr,
+           "usage: j2k-file image-file -reduce n (<- optional)\n\n");
+
     return 1;
   }