Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/mpeg4videodec.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index 24c280df46..1686ed1001 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -1955,6 +1955,14 @@ static int mpeg4_decode_studio_mb(MpegEncContext *s, 
int16_t block_[12][64])
         return SLICE_END;
     }
 
+    //vcon-stp9L1.bits (first frame)
+    if (get_bits_left(&s->gb) == 0)
+        return SLICE_END;
+
+    //vcon-stp2L1.bits, vcon-stp3L1.bits, vcon-stp6L1.bits, vcon-stp7L1.bits, 
vcon-stp8L1.bits, vcon-stp10L1.bits (first frame)
+    if (get_bits_left(&s->gb) < 8U && show_bits(&s->gb, get_bits_left(&s->gb)) 
== 0)
+        return SLICE_END;
+
     return SLICE_OK;
 }
 
-- 
2.18.0

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