From 29fcf3eb3b50d21a92f033546609989ca705fd5f Mon Sep 17 00:00:00 2001
From: xiongziliang <771730766@qq.com>
Date: Sun, 30 Aug 2020 09:15:02 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E5=96=84=E4=BB=A3=E7=A0=81?=
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---
 src/Record/MP4Muxer.cpp | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/src/Record/MP4Muxer.cpp b/src/Record/MP4Muxer.cpp
index af350f67..72fbbc9d 100644
--- a/src/Record/MP4Muxer.cpp
+++ b/src/Record/MP4Muxer.cpp
@@ -48,17 +48,13 @@ void MP4Muxer::inputFrame(const Frame::Ptr &frame) {
     }
 
     if (!_started) {
-        //还没开始
-        if (!_have_video) {
-            _started = true;
-        } else {
-            if (frame->getTrackType() != TrackVideo || !frame->keyFrame()) {
-                //如果首帧是音频或者是视频但是不是i帧，那么不能开始写文件
-                return;
-            }
-            //开始写文件
-            _started = true;
+        //该逻辑确保含有视频时，第一帧为关键帧
+        if (_have_video && !frame->keyFrame()) {
+            //含有视频，但是不是关键帧，那么前面的帧丢弃
+            return;
         }
+        //开始写文件
+        _started = true;
     }
 
     //mp4文件时间戳需要从0开始