Decoders supporting frame parameter changes can return delayed frames
with the old parameters.
---
 libavcodec/utils.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 1185a35..97fa570 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -1282,11 +1282,16 @@ int attribute_align_arg 
avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
         else {
             ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
                                        avpkt);
-            picture->pkt_dts             = avpkt->dts;
-            picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
-            picture->width               = avctx->width;
-            picture->height              = avctx->height;
-            picture->format              = avctx->pix_fmt;
+            picture->pkt_dts = avpkt->dts;
+
+            /* delayed pictures might have different parameters than
+             * the context returning them */
+            if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
+                picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
+                picture->width               = avctx->width;
+                picture->height              = avctx->height;
+                picture->format              = avctx->pix_fmt;
+            }
         }
 
         emms_c(); //needed to avoid an emms_c() call before every return;
-- 
1.7.12.4

_______________________________________________
libav-devel mailing list
libav-devel@libav.org
https://lists.libav.org/mailman/listinfo/libav-devel

Reply via email to