From b2290bf10b12b7772f55fcab014a47e18e9fdef2 Mon Sep 17 00:00:00 2001
From: Dirk Ausserhaus <dausserhaus@gmail.com>
Date: Wed, 18 Jun 2014 10:01:52 +0200
Subject: [PATCH] i263: skip dummy frames

Intel i263 codec has special 8-byte dummy frames that should not be decoded,
so do not even attempt to decode them and skip them instead.

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
---
 libavcodec/intelh263dec.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/intelh263dec.c b/libavcodec/intelh263dec.c
index 8a0a381fb7..e34da5c6f5 100644
--- a/libavcodec/intelh263dec.c
+++ b/libavcodec/intelh263dec.c
@@ -26,6 +26,10 @@ int ff_intel_h263_decode_picture_header(MpegEncContext *s)
 {
     int format;
 
+    if (get_bits_left(&s->gb) == 64) { /* special dummy frames */
+        return FRAME_SKIPPED;
+    }
+
     /* picture header */
     if (get_bits_long(&s->gb, 22) != 0x20) {
         av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n");