From: Limin Wang <lance.lmw...@gmail.com> Signed-off-by: Limin Wang <lance.lmw...@gmail.com> --- libavformat/matroskaenc.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index 784973a951..f0474da44f 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -374,9 +374,12 @@ static void end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, put_ebml_length(pb, size, length_size); if (mkv->write_crc) { skip = 6; /* Skip reserved 6-byte long void element from the dynamic buffer. */ + if (size > skip) { AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf + skip, size - skip) ^ UINT32_MAX); put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc)); + } } + if (size > skip) avio_write(pb, buf + skip, size - skip); if (keep_buffer) { -- 2.21.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".