1 files changed, 4 insertions, 3 deletions
diff --git a/mplayer.c b/mplayer.c
index d20998fe78..79f5719339 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -540,9 +540,10 @@ static void print_file_properties(struct MPContext *mpctx, const char *filename)
         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTERS=%d\n", chapter_count);
         for (int i = 0; i < chapter_count; i++) {
             mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_ID=%d\n", i);
-            // in milliseconds
-            mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_START=%"PRIu64"\n",
-                   i, (int64_t)(chapter_start_time(mpctx, i) * 1000.0));
+            // print in milliseconds
+            double time = chapter_start_time(mpctx, i) * 1000.0;
+            mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_START=%"PRId64"\n",
+                   i, (int64_t)(time < 0 ? -1 : time));
             char *name = chapter_name(mpctx, i);
             if (name) {
                 mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CHAPTER_%d_NAME=%s\n", i,