avdevice/decklink: fix checking video mode in SDK version 11

Apparently in the new SDK one cannot query if VANC output is supported, so we
will fall back to non-VANC output if enabling the video output with VANC fails.

Fixes ticket #7867.

Signed-off-by: Marton Balint <cus@passwd.hu>

1 files changed, 5 insertions, 2 deletions

diff --git a/libavdevice/decklink_enc.cpp b/libavdevice/decklink_enc.cpp
index 8b621d0054..04b06aee3a 100644
--- a/libavdevice/decklink_enc.cpp
+++ b/libavdevice/decklink_enc.cpp
@@ -197,8 +197,11 @@ static int decklink_setup_video(AVFormatContext *avctx, AVStream *st)
                " Check available formats with -list_formats 1.\n");
         return -1;
     }
-    if (ctx->dlo->EnableVideoOutput(ctx->bmd_mode,
-                                    ctx->supports_vanc ? bmdVideoOutputVANC : bmdVideoOutputFlagDefault) != S_OK) {
+    if (ctx->supports_vanc && ctx->dlo->EnableVideoOutput(ctx->bmd_mode, bmdVideoOutputVANC) != S_OK) {
+        av_log(avctx, AV_LOG_WARNING, "Could not enable video output with VANC! Trying without...\n");
+        ctx->supports_vanc = 0;
+    }
+    if (!ctx->supports_vanc && ctx->dlo->EnableVideoOutput(ctx->bmd_mode, bmdVideoOutputFlagDefault) != S_OK) {
         av_log(avctx, AV_LOG_ERROR, "Could not enable video output!\n");
         return -1;
     }