From 63fca9df9c6f236c16a5ac0b60e73cb0e7669b2e Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Wed, 28 Oct 2015 12:20:25 -0400
Subject: [PATCH] vp9_parser: don't overwrite cached timestamps with nopts.

---
 libavcodec/vp9_parser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vp9_parser.c b/libavcodec/vp9_parser.c
index 0437097391..6713850d2b 100644
--- a/libavcodec/vp9_parser.c
+++ b/libavcodec/vp9_parser.c
@@ -64,7 +64,7 @@ static int parse_frame(AVCodecParserContext *ctx, const uint8_t *buf, int size)
         if (ctx->pts == AV_NOPTS_VALUE)
             ctx->pts = s->pts;
         s->pts = AV_NOPTS_VALUE;
-    } else {
+    } else if (ctx->pts != AV_NOPTS_VALUE) {
         s->pts = ctx->pts;
         ctx->pts = AV_NOPTS_VALUE;
     }