From 86a253859e2eac62f41a2821804efa90ae8215c8 Mon Sep 17 00:00:00 2001
From: Kishi <41839133+Kishi85@users.noreply.github.com>
Date: Sun, 28 Jun 2026 22:11:35 +0200
Subject: [PATCH] fix(video): avoid nullptr deref segfault on encode session
 teardown (#5257)

---
 src/video.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/video.cpp b/src/video.cpp
index 08f9c99c8..5e100859e 100644
--- a/src/video.cpp
+++ b/src/video.cpp
@@ -418,8 +418,8 @@ namespace video {
     avcodec_encode_session_t(avcodec_encode_session_t &&other) noexcept = default;
 
     ~avcodec_encode_session_t() {
-      // Flush any remaining frames in the encoder
-      if (avcodec_send_frame(avcodec_ctx.get(), nullptr) == 0) {
+      // Flush any remaining frames in the encoder if the encoder started up (frame num > 0)
+      if (avcodec_ctx->frame_num > 0 && avcodec_send_frame(avcodec_ctx.get(), nullptr) == 0) {
         packet_raw_avcodec pkt;
         while (avcodec_receive_packet(avcodec_ctx.get(), pkt.av_packet) == 0);
       }