From 12b793b658b387a5e98c74397f9efdabd9d3e9b8 Mon Sep 17 00:00:00 2001
From: cxh <zxwl@56.com>
Date: Mon, 29 Dec 2025 14:15:18 +0800
Subject: [PATCH] 1

---
 src/rtmp_manager.cpp | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index fd8c312..16a4df6 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -85,22 +85,25 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
                                ",framerate=" + std::to_string(fps) +
                                "/1 "
                                "! queue max-size-buffers=4 leaky=downstream "
+
                                "! mpph264enc "
-                               "profile=baseline "  // ⭐ 关键：别用 high
-                               "bframes=0 "         // ⭐ 关键：禁 B 帧
-                               "gop=" +
-                               std::to_string(fps) +
-                               " "
+                               "profile=baseline "  // ⭐ 核心：硬性禁 B 帧
                                "rc-mode=cbr "
                                "bps=" +
                                std::to_string(bitrate) +
                                " "
-                               "header-mode=each-idr "
+                               "gop=" +
+                               std::to_string(fps) +
+                               " "                      // 1 秒 1 个 IDR
+                               "header-mode=each-idr "  // SPS/PPS 跟 IDR
+
                                "! h264parse "
                                "config-interval=1 "
-                               "disable-passthrough=true "
+                               "disable-passthrough=true "  // ⭐ 修 DTS
+
                                "! queue max-size-buffers=5 leaky=downstream "
                                "! flvmux streamable=true "
+
                                "! rtmpsink location=\"" +
                                live_rtmp + "\" sync=false async=false";