ffmpeg | branch: release/2.6 | Michael Niedermayer <michae...@gmx.at> | Sat Apr 
 4 19:28:33 2015 +0200| [f1b4a71ddfcdfa37106243383255406e7be51b93] | committer: 
Michael Niedermayer

avcodec/h264: Fail for invalid mixed IDR / non IDR frames in slice threading 
mode

Fixes Ticket4408

Signed-off-by: Michael Niedermayer <michae...@gmx.at>
(cherry picked from commit fc58d5c43b4c7396fc69081eb0dfe5b6a21cb10d)

Signed-off-by: Michael Niedermayer <michae...@gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f1b4a71ddfcdfa37106243383255406e7be51b93
---

 libavcodec/h264.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 8ec46df..e64cc07 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -1537,8 +1537,14 @@ again:
                     ret = -1;
                     goto end;
                 }
-                if(!idr_cleared)
+                if(!idr_cleared) {
+                    if (h->current_slice && (avctx->active_thread_type & 
FF_THREAD_SLICE)) {
+                        av_log(h, AV_LOG_ERROR, "invalid mixed IDR / non IDR 
frames cannot be decoded in slice multithreading mode\n");
+                        ret = AVERROR_INVALIDDATA;
+                        goto end;
+                    }
                     idr(h); // FIXME ensure we don't lose some frames if there 
is reordering
+                }
                 idr_cleared = 1;
                 h->has_recovery_point = 1;
             case NAL_SLICE:

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