[FFmpeg-devel] [PATCH] avcodec/qtrle: set keyframe flag in output frames (PR #20806)

[jermy via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

PR #20806 opened by jermy
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20806
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20806.patch

This was broken by dc7bd7c5a5 because it was depending on the behaviour
of all frames setting key_frame by default, although that was also wrong
because it didn't unset the flag for duplicate/repeated frames.

(this is the same change as a PR that was posted to ffmpeg-devel yesterday)

Signed-off-by: Jeremy James <jeremy.james@gmail.com>


>From e8b0dcfd76ea476f2feb40cc86a2a30be2dad8bc Mon Sep 17 00:00:00 2001
From: Jeremy James <jeremy.james@gmail.com>
Date: Thu, 30 Oct 2025 13:53:28 +0000
Subject: [PATCH] avcodec/qtrle: set keyframe flag in output frames

This was broken by dc7bd7c5a5 because it was depending on the behaviour
of all frames setting key_frame by default, although that was also wrong
because it didn't unset the flag for duplicate/repeated frames.

Signed-off-by: Jeremy James <jeremy.james@gmail.com>
---
 libavcodec/qtrle.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/qtrle.c b/libavcodec/qtrle.c
index 1c2fbc357e..c8bee8ce44 100644
--- a/libavcodec/qtrle.c
+++ b/libavcodec/qtrle.c
@@ -557,6 +557,10 @@ done:
 
     if ((ret = av_frame_ref(rframe, s->frame)) < 0)
         return ret;
+
+    rframe->pict_type = !duplicate ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
+    rframe->flags     = AV_FRAME_FLAG_KEY * !duplicate;
+
     *got_frame      = 1;
 
     /* always report that the buffer was completely consumed */
-- 
2.49.1

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