From 25ce544d4b27e5a4fdfc481f3f41ee1d631f0b3e Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Fri, 17 Apr 2026 21:26:25 +0200 Subject: [PATCH] avformat/matroskaenc: Increase size of EBML_WRITER array 7faa6ee2aa01e3bd747ce6c55e6d44c2ba7b0bb8 added support for writing AV_PKT_DATA_DYNAMIC_HDR_SMPTE_2094_APP5, yet forgot to update the size of the EBML element buffer. Reviewed-by: James Almer Signed-off-by: Andreas Rheinhardt --- libavformat/matroskaenc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index a3b45257db..4f4337ff8b 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -2852,7 +2852,11 @@ static int mkv_write_block(void *logctx, MatroskaMuxContext *mkv, size_t side_data_size; uint64_t additional_id; unsigned track_number = track->track_num; - EBML_WRITER(12); + // BlockGroup, Block, BlockDuration, DiscardPadding, BlockReference + // and BlockAdditions with three elements per BlockMore + // Don't forget to increment the number of BlockMore when adding + // support for writing a new blockadditional. + EBML_WRITER(5 + (1 + 3 * 3)); int ret; mkv->cur_block.track = track;