From e3c6cc96cf2f0b2c22dee80a53a01a5fe4fea009 Mon Sep 17 00:00:00 2001
From: rcombs <rcombs@rcombs.me>
Date: Sat, 13 Nov 2021 02:33:08 -0600
Subject: [PATCH] lavc/videotoolbox: call
 VTRegisterSupplementalVideoDecoderIfAvailable

This is required for VP9 to work.
---
 libavcodec/videotoolbox.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavcodec/videotoolbox.c b/libavcodec/videotoolbox.c
index 3022cd1cbf..a11d494915 100644
--- a/libavcodec/videotoolbox.c
+++ b/libavcodec/videotoolbox.c
@@ -32,6 +32,7 @@
 #include "h264dec.h"
 #include "hevcdec.h"
 #include "mpegvideo.h"
+#include <Availability.h>
 #include <TargetConditionals.h>
 
 #ifndef kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder
@@ -866,6 +867,12 @@ static int videotoolbox_start(AVCodecContext *avctx)
         break;
     }
 
+#ifdef __MAC_10_11
+    if (__builtin_available(macOS 10.11, *)) {
+        VTRegisterSupplementalVideoDecoderIfAvailable(videotoolbox->cm_codec_type);
+    }
+#endif
+
     decoder_spec = videotoolbox_decoder_config_create(videotoolbox->cm_codec_type, avctx);
 
     if (!decoder_spec) {