[FFmpeg-cvslog] h264: fix seeking in low delay streams without IDR

[Michael Niedermayer]

ffmpeg | branch: release/0.9 | Michael Niedermayer <michaelni at gmx.at> | Wed Apr  4 03:43:23 2012 +0200| [89f2d6c349ae9e4417af2eb41402fb69256a63a5] | committer: Carl Eugen Hoyos

h264: fix seeking in low delay streams without IDR

Fixes Ticket1165

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 3360b8517a1f478c4102072e5eadd8ba78be0538)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=89f2d6c349ae9e4417af2eb41402fb69256a63a5
---

 libavcodec/h264_refs.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libavcodec/h264_refs.c b/libavcodec/h264_refs.c
index 8432a8a..926a6cc 100644
--- a/libavcodec/h264_refs.c
+++ b/libavcodec/h264_refs.c
@@ -655,6 +655,8 @@ int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
 
     if(err >= 0 && h->long_ref_count==0 && h->short_ref_count<=2 && h->pps.ref_count[0]<=1 + (s->picture_structure != PICT_FRAME) && s->current_picture_ptr->f.pict_type == AV_PICTURE_TYPE_I){
         s->current_picture_ptr->sync |= 1;
+        if(!h->s.avctx->has_b_frames)
+            h->sync = 2;
     }
 
     return (h->s.avctx->err_recognition & AV_EF_EXPLODE) ? err : 0;