From 67aceaf4ad641a4d34c3ec70b532efdc60483e3d Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Mon, 13 Dec 2021 11:23:52 +0100
Subject: [PATCH] lavc/encode: improve the empty frame check

Test for buf[0] rather than data[0] (which is broken for some hwaccel
formats).
---
 libavcodec/encode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/encode.c b/libavcodec/encode.c
index dd25cf999b..5575cf23db 100644
--- a/libavcodec/encode.c
+++ b/libavcodec/encode.c
@@ -366,7 +366,7 @@ int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame
     if (avci->draining)
         return AVERROR_EOF;
 
-    if (avci->buffer_frame->data[0])
+    if (avci->buffer_frame->buf[0])
         return AVERROR(EAGAIN);
 
     if (!frame) {