From b917218c35d240d9266c163103353e51facb0cae Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Fri, 2 Apr 2021 16:59:42 +0200
Subject: [PATCH] avcodec/h264_metadata_bsf: Don't add AUD to extradata

This is a regression since switching to the generic CBS BSF code.

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/h264_metadata_bsf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/h264_metadata_bsf.c b/libavcodec/h264_metadata_bsf.c
index 6e58c0be1d..06d23e3142 100644
--- a/libavcodec/h264_metadata_bsf.c
+++ b/libavcodec/h264_metadata_bsf.c
@@ -466,7 +466,7 @@ static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
         if (ctx->aud == BSF_ELEMENT_REMOVE)
             ff_cbs_delete_unit(au, 0);
     } else {
-        if (ctx->aud == BSF_ELEMENT_INSERT) {
+        if (pkt && ctx->aud == BSF_ELEMENT_INSERT) {
             err = h264_metadata_insert_aud(bsf, au);
             if (err < 0)
                 return err;