From a814f1d364ba912adf61adef158168c5f7604e93 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Mon, 30 Nov 2015 03:32:36 +0100
Subject: avcodec/vp3: always set pix_fmt in theora_decode_header()

Fixes assertion failure
Fixes: d0bb0662da342ec65f8f2a081222e6b9/signal_sigabrt_7ffff6ae7cc9_5471_82964f0a9ac2f4d3d59390c15473f6f7.ogg

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/vp3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 1d4c575bd3..46c83aa636 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -2328,7 +2328,8 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb)
             return AVERROR_INVALIDDATA;
         }
         skip_bits(gb, 3); /* reserved */
-    }
+    } else
+        avctx->pix_fmt = AV_PIX_FMT_YUV420P;
 
     ret = ff_set_dimensions(avctx, s->width, s->height);
     if (ret < 0)
-- 
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