Commit 3715afba for libheif

commit 3715afba739b41433ed736de7b5f364f42912e23
Author: Dirk Farin <dirk.farin@gmail.com>
Date:   Mon Jan 12 21:17:00 2026 +0100

    heif-enc: rephrase description of --bit-depth option (#1662)

diff --git a/examples/heif_enc.cc b/examples/heif_enc.cc
index 65771a83..e36577dc 100644
--- a/examples/heif_enc.cc
+++ b/examples/heif_enc.cc
@@ -295,7 +295,7 @@ void show_help(const char* argv0)
             << "      --no-alpha                 do not save alpha channel\n"
             << "      --no-thumb-alpha           do not save alpha channel in thumbnail image\n"
             << "      --verbose                  enable logging output (more will increase logging level)\n"
-            << "  -b, --bit-depth #              bit-depth of generated HEIF/AVIF file when using 16-bit PNG input, valid range: 9-16 (default: 10 bit)\n"
+            << "  -b, --bit-depth #              number of bits to use from an 16-bit PNG input, valid range: 9-16 (default: 10 bit)\n"
             << "      --premultiplied-alpha      input image has premultiplied alpha\n"
 #if WITH_HEADER_COMPRESSION
             << "      --enable-metadata-compression ALGO  enable metadata item compression (experimental)\n"
@@ -1276,7 +1276,7 @@ int main(int argc, char** argv)
       case 'b':
         output_bit_depth = atoi(optarg);
         if (output_bit_depth < 9 || output_bit_depth > 16) {
-          std::cerr << "Output bit depth for HDR images must be 9-16 bits.\n";
+          std::cerr << "Bit depth for input HDR images must be 9-16 bits.\n";
           return 5;
         }
         break;