From 6b2fcf79435656be7797d396203adcc6c11ecc52 Mon Sep 17 00:00:00 2001
From: xiongguangjie <xiong_panda@163.com>
Date: Sun, 29 Sep 2024 11:55:58 +0800
Subject: [PATCH] Fix the issue where the hls-fmp4 do not flush data in single
 audio cases (#3935 #3937)

---
 src/Record/MP4Muxer.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Record/MP4Muxer.cpp b/src/Record/MP4Muxer.cpp
index ffa3295f..8fd0567e 100644
--- a/src/Record/MP4Muxer.cpp
+++ b/src/Record/MP4Muxer.cpp
@@ -247,7 +247,8 @@ bool MP4MuxerMemory::inputFrame(const Frame::Ptr &frame) {
         _key_frame = false;
     }
 
-    if (frame->keyFrame()) {
+    // only audio all frame is key frame
+    if (frame->keyFrame() || !haveVideo()) {
         _key_frame = true;
     }
     if (frame->getTrackType() == TrackVideo || !haveVideo()) {