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-rw-r--r--libavcodec/h263.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index 0b09dc7311..ac373cce06 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -4304,6 +4304,8 @@ int h263_decode_picture_header(MpegEncContext *s)
/* MPPTYPE */
s->pict_type = get_bits(&s->gb, 3) + I_TYPE;
dprintf("pict_type: %d\n", s->pict_type);
+ if (s->pict_type == 8 && s->avctx->codec_tag == ff_get_fourcc("ZYGO"))
+ s->pict_type = I_TYPE;
if (s->pict_type != I_TYPE &&
s->pict_type != P_TYPE)
return -1;