Module: libav
Branch: master
Commit: 956a54129db522998a5abae869568dae2c9774cb

Author:    Mark Thompson <[email protected]>
Committer: Mark Thompson <[email protected]>
Date:      Tue Sep 27 19:08:42 2016 +0100

vaapi_h264: Set max_num_ref_frames to 1 when not using B frames

---

 libavcodec/vaapi_encode_h264.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vaapi_encode_h264.c b/libavcodec/vaapi_encode_h264.c
index 0cd966f..020f892 100644
--- a/libavcodec/vaapi_encode_h264.c
+++ b/libavcodec/vaapi_encode_h264.c
@@ -778,7 +778,7 @@ static int 
vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 
         vseq->level_idc = avctx->level;
 
-        vseq->max_num_ref_frames = 2;
+        vseq->max_num_ref_frames = 1 + (avctx->max_b_frames > 0);
 
         vseq->picture_width_in_mbs  = priv->mb_width;
         vseq->picture_height_in_mbs = priv->mb_height;

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