From 57ab5fae7cf83a294505daa3311b7ee7961848e5 Mon Sep 17 00:00:00 2001
From: cxh <zxwl@56.com>
Date: Fri, 9 Jan 2026 11:19:43 +0800
Subject: [PATCH] 1

---
 src/rtmp_manager.cpp | 38 +++++++++++++++++---------------------
 1 file changed, 17 insertions(+), 21 deletions(-)

diff --git a/src/rtmp_manager.cpp b/src/rtmp_manager.cpp
index 71a6702..8c9bc01 100644
--- a/src/rtmp_manager.cpp
+++ b/src/rtmp_manager.cpp
@@ -54,36 +54,32 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
 {
     const std::string rtmp_url = "rtmp://127.0.0.1:1935/" + cam.name;
 
-    // 关键：v4l2src 后立刻加“吸震队列”，避免回压把采集端憋死
-    // 关键：h264parse 起名，给你后续要 probe 也能准确找到（但现在先别 probe）
-    std::string pipeline_str = "v4l2src device=" + cam.device +
-                               " io-mode=dmabuf do-timestamp=true "
+    std::string pipeline_str = "v4l2src name=src device=" + cam.device +
+                               " io-mode=dmabuf "
                                "! video/x-raw,format=NV12,width=1280,height=960,framerate=30/1 "
-
-                               // ⭐ 吸震：小队列 + upstream 泄漏（丢旧帧，保实时）
-                               "! queue max-size-buffers=4 max-size-time=0 leaky=upstream "
-
-                               // 你原来的裁剪缩放可以保留
+                               "! videoscale method=nearest-neighbour "
                                "! videocrop top=120 bottom=120 "
-                               "! videoscale "
                                "! video/x-raw,width=" +
                                std::to_string(cam.width) + ",height=" + std::to_string(cam.height) +
-                               " "
-
-                               // 再来一个队列隔离编码器
-                               "! queue max-size-buffers=8 max-size-time=0 leaky=downstream "
-
+                               ",pixel-aspect-ratio=1/1 "
+                               "! queue max-size-buffers=6 max-size-time=0 max-size-bytes=0 "
                                "! mpph264enc rc-mode=cbr "
                                "bps=" +
-                               std::to_string(cam.bitrate) +
+                               std::to_string(bitrate) +
                                " "
-                               "gop=30 header-mode=each-idr profile=main "
-
-                               "! h264parse name=parse config-interval=1 "
+                               "max-bps=" +
+                               std::to_string(bitrate) +
+                               " "
+                               "min-bps=" +
+                               std::to_string(bitrate) +
+                               " "
+                               "gop=" +
+                               std::to_string(fps) +
+                               " "
+                               "header-mode=each-idr profile=main "
+                               "! h264parse config-interval=1 "
                                "! video/x-h264,stream-format=avc,alignment=au "
                                "! flvmux streamable=true "
-
-                               // rtmpsink 不要 sync，避免等时钟
                                "! rtmpsink location=\"" +
                                rtmp_url + "\" sync=false async=false";