From 8081a0b10f5325b60e885d8823593485019b8a18 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Fri, 2 Apr 2021 17:16:39 +0200 Subject: [PATCH] avcodec/av1_metadata_bsf: Check for the existence of units Fixes a crash with ISOBMFF extradata containing no OBUs. Reviewed-by: James Almer Signed-off-by: Andreas Rheinhardt --- libavcodec/av1_metadata_bsf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/av1_metadata_bsf.c b/libavcodec/av1_metadata_bsf.c index 8cafe461d1..328db5c0da 100644 --- a/libavcodec/av1_metadata_bsf.c +++ b/libavcodec/av1_metadata_bsf.c @@ -120,7 +120,7 @@ static int av1_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, } // If a Temporal Delimiter is present, it must be the first OBU. - if (frag->units[0].type == AV1_OBU_TEMPORAL_DELIMITER) { + if (frag->nb_units && frag->units[0].type == AV1_OBU_TEMPORAL_DELIMITER) { if (ctx->td == BSF_ELEMENT_REMOVE) ff_cbs_delete_unit(frag, 0); } else if (pkt && ctx->td == BSF_ELEMENT_INSERT) {