Additional changes from requests in PR #640
diff --git a/apps/avifdec.c b/apps/avifdec.c
index 8a90ff3..c60bd53 100644
--- a/apps/avifdec.c
+++ b/apps/avifdec.c
@@ -37,8 +37,8 @@
printf(" -r,--raw-color : Output raw RGB values instead of multiplying by alpha when saving to opaque formats\n");
printf(" (JPEG only; not applicable to y4m)\n");
printf(" --index : When decoding an image sequence or progressive image, specify which frame index to decode (Default: 0)\n");
- printf(" --progressive : Enable progressive AVIF processing. If a progressive image is encountered, avifdec will use\n");
- printf(" --index to choose which layer to decode (in progressive order).\n");
+ printf(" --progressive : Enable progressive AVIF processing. If a progressive image is encountered and --progressive is passed,\n");
+ printf(" avifdec will use --index to choose which layer to decode (in progressive order).\n");
printf(" --no-strict : Disable strict decoding, which disables strict validation checks and errors\n");
printf(" -i,--info : Decode all frames and display all image information instead of saving to disk\n");
printf(" --ignore-icc : If the input file contains an embedded ICC profile, ignore it (no-op if absent)\n");
