From f56995b4a69a3797043f2de078ec0eb85352a4b3 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 26 Feb 2009 21:09:24 +0000
Subject: [PATCH] Half user provided time_base once during the first frame when
 there is no timebase stored in the h264 stream. This should fix fate.
 (ffmpeg.c used pict_repeat with its default 1/25 timebase)

Originally committed as revision 17622 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/h264.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 03d70b7d78..64ca5b7e66 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -3768,6 +3768,9 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
                 s->avctx->time_base.den *= 2;
             av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
                       s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
+        }else if(!h->sps.time_scale && !s->avctx->frame_number){
+            s->avctx->time_base.den *=2;
+            h->sps.time_scale= s->avctx->time_base.den;
         }
     }