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-rw-r--r--libavformat/matroska.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libavformat/matroska.h b/libavformat/matroska.h
index b1f7ae4ed5..0dbc724d56 100644
--- a/libavformat/matroska.h
+++ b/libavformat/matroska.h
@@ -176,6 +176,7 @@
#define MATROSKA_ID_BLOCK 0xA1
#define MATROSKA_ID_BLOCKDURATION 0x9B
#define MATROSKA_ID_BLOCKREFERENCE 0xFB
+#define MATROSKA_ID_CODECSTATE 0xA4
/* IDs in the attachments master */
#define MATROSKA_ID_ATTACHEDFILE 0x61A7