From f3e22e32014221d0f089f9cd2d7c6ea3e35da164 Mon Sep 17 00:00:00 2001
From: Marton Balint <cus@passwd.hu>
Date: Thu, 14 Mar 2019 02:13:56 +0100
Subject: [PATCH] avdevice/decklink_common: properly check DoesSupportVideoMode
 result when trying VANC flag

Signed-off-by: Marton Balint <cus@passwd.hu>
---
 libavdevice/decklink_common.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavdevice/decklink_common.cpp b/libavdevice/decklink_common.cpp
index d3cc1eb3d1..3902311edd 100644
--- a/libavdevice/decklink_common.cpp
+++ b/libavdevice/decklink_common.cpp
@@ -256,7 +256,7 @@ int ff_decklink_set_format(AVFormatContext *avctx,
     } else {
         if (!ctx->supports_vanc || ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
                                                                   bmdVideoOutputVANC,
-                                                                  &support, NULL) != S_OK) {
+                                                                  &support, NULL) != S_OK || support != bmdDisplayModeSupported) {
             /* Try without VANC enabled */
             if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
                                                bmdVideoOutputFlagDefault,