On 5/12/2023 5:49 PM, Paul B Mahol wrote:
Attached.

From 11907ee612b0440faeb3804e8f9af5e36a63db89 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <[email protected]>
Date: Fri, 12 May 2023 21:01:41 +0200
Subject: [PATCH] avfilter/avfiltergraph: fix illogical flaws in code

Signed-off-by: Paul B Mahol <[email protected]>
---
 libavfilter/avfiltergraph.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 53f468494d..744f480e1d 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -748,8 +748,10 @@ static int reduce_formats_on_filter(AVFilterContext 
*filter)
                 (KNOWN(fmt) || fmts->all_counts)) {
                 /* Turn the infinite list into a singleton */
                 fmts->all_layouts = fmts->all_counts  = 0;
-                if (ff_add_channel_layout(&outlink->incfg.channel_layouts, fmt) 
< 0)
-                    ret = 1;
+                ret = ff_add_channel_layout(&outlink->incfg.channel_layouts, 
fmt);
+                if (ret < 0)
+                    return ret;
+                ret = 1;
                 break;
             }

Probably ok.
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