Attached.
From 440616b9400d6d6a4705b6feedcd5439cd9e54c2 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <one...@gmail.com>
Date: Tue, 13 Jun 2023 16:39:12 +0200
Subject: [PATCH] avfilter/avfilter: add flag to signal filters that support
 w/h change

Signed-off-by: Paul B Mahol <one...@gmail.com>
---
 libavfilter/avfilter.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index d69381aed4..f5df36dd65 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -159,6 +159,12 @@ enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx);
  */
 #define AVFILTER_FLAG_SUPPORT_TIMELINE (AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL)
 
+/**
+ * The filter supports variable image size processing. This means
+ * input frames width and/or height can change in size.
+ */
+#define AVFILTER_FLAG_SUPPORT_VARIABLE_IMAGE_SIZE (1 << 18)
+
 /**
  * Filter definition. This defines the pads a filter contains, and all the
  * callback functions used to interact with the filter.
-- 
2.39.1

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