diff -urN libmad-0.15.1b.orig/frame.c libmad-0.15.1b.patched/frame.c
--- libmad-0.15.1b.orig/frame.c	2022-06-19 17:20:02.000000000 -0700
+++ libmad-0.15.1b.patched/frame.c	2022-06-19 18:18:39.000000000 -0700
@@ -473,7 +473,9 @@
   return 0;
 
  fail:
-  stream->anc_bitlen = 0;
+  if(stream->error != MAD_ERROR_BADDATAPTR) {
+    stream->anc_bitlen = 0;
+  }
   return -1;
 }
 
diff -urN libmad-0.15.1b.orig/layer3.c libmad-0.15.1b.patched/layer3.c
--- libmad-0.15.1b.orig/layer3.c	2022-06-19 17:20:02.000000000 -0700
+++ libmad-0.15.1b.patched/layer3.c	2022-06-19 18:18:47.000000000 -0700
@@ -2656,6 +2656,11 @@
     stream->anc_ptr    = ptr;
     stream->anc_bitlen = md_len * CHAR_BIT - data_bitlen;
   }
+  else {
+    /* Give it the rest of the frame */
+    stream->anc_ptr    = stream->ptr;
+    stream->anc_bitlen = frame_free * CHAR_BIT;
+  }
 
 # if 0 && defined(DEBUG)
   fprintf(stderr,