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-rw-r--r--libavformat/m4vdec.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/libavformat/m4vdec.c b/libavformat/m4vdec.c
index ebc7ab4f81..220daeb775 100644
--- a/libavformat/m4vdec.c
+++ b/libavformat/m4vdec.c
@@ -22,8 +22,11 @@
#include "avformat.h"
#include "rawdec.h"
-#define VISUAL_OBJECT_START_CODE 0x000001b5
-#define VOP_START_CODE 0x000001b6
+#define VOS_STARTCODE 0x1B0
+#define USER_DATA_STARTCODE 0x1B2
+#define GOP_STARTCODE 0x1B3
+#define VISUAL_OBJ_STARTCODE 0x1B5
+#define VOP_STARTCODE 0x1B6
#define SLICE_STARTCODE 0x1B7
#define EXT_STARTCODE 0x1B8
@@ -41,9 +44,9 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
if (temp_buffer < 2)
continue;
- if (temp_buffer == VOP_START_CODE)
+ if (temp_buffer == VOP_STARTCODE)
VOP++;
- else if (temp_buffer == VISUAL_OBJECT_START_CODE)
+ else if (temp_buffer == VISUAL_OBJ_STARTCODE)
VISO++;
else if (temp_buffer >= 0x100 && temp_buffer < 0x120)
VO++;