From: Aman Gupta <a...@tmm1.net>

Signed-off-by: Aman Gupta <a...@tmm1.net>
---
 libavcodec/cbs_h264_syntax_template.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavcodec/cbs_h264_syntax_template.c 
b/libavcodec/cbs_h264_syntax_template.c
index 32e6acd68e..106da0630e 100644
--- a/libavcodec/cbs_h264_syntax_template.c
+++ b/libavcodec/cbs_h264_syntax_template.c
@@ -584,6 +584,12 @@ static int FUNC(sei_pic_timestamp)(CodedBitstreamContext 
*ctx, RWContext *rw,
     }
 
     sps = h264->active_sps;
+    if (!sps) {
+        av_log(ctx->log_ctx, AV_LOG_ERROR,
+               "No active SPS for pic_timestamp.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     if (sps->vui.nal_hrd_parameters_present_flag)
         time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length;
     else if (sps->vui.vcl_hrd_parameters_present_flag)
-- 
2.15.2 (Apple Git-101.1)

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