Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/m4vdec.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libavformat/m4vdec.c b/libavformat/m4vdec.c
index 34d434f7d2..be30f86a5c 100644
--- a/libavformat/m4vdec.c
+++ b/libavformat/m4vdec.c
@@ -29,6 +29,7 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
{
uint32_t temp_buffer = -1;
int VO = 0, VOL = 0, VOP = 0, VISO = 0, res = 0;
+ int res_main = 0;
int i;
for (i = 0; i < probe_packet->buf_size; i++) {
@@ -46,11 +47,16 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
VO++;
else if (temp_buffer >= 0x120 && temp_buffer < 0x130)
VOL++;
+ else if (temp_buffer == 0x1B7 || temp_buffer == 0x1B8)
+ res_main++;
else if (!(0x1AF < temp_buffer && temp_buffer < 0x1B7) &&
!(0x1B9 < temp_buffer && temp_buffer < 0x1C4))
res++;
}
+ if (res_main && 2*res_main < VOP)
+ res += res_main;
+
if (VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res == 0)
return VOP+VO > 4 ? AVPROBE_SCORE_EXTENSION :
AVPROBE_SCORE_EXTENSION/2;
--
2.17.0
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