1

src/rtmp_manager.cpp

@@ -59,15 +59,26 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
     std::string pipeline_str = "v4l2src device=" + cam.device +
                                " io-mode=dmabuf "
 
+                               // 原始输入
                                "! video/x-raw,format=NV12,width=1280,height=960,framerate=30/1 "
+
+                               // 裁剪 + 缩放
                                "! videocrop top=120 bottom=120 "
                                "! videoscale "
+
+                               // ⭐ 关键：在 RAW 阶段强制重打时钟（修复“看着一顿”）
+                               "! videorate "
+                               "! video/x-raw,framerate=30/1 "
+
+                               // 输出分辨率
                                "! video/x-raw,width=" +
                                std::to_string(cam.width) + ",height=" + std::to_string(cam.height) +
                                " "
 
+                               // 缓冲
                                "! queue max-size-buffers=8 max-size-time=0 leaky=downstream "
 
+                               // 编码
                                "! mpph264enc rc-mode=cbr "
                                "bps=" +
                                std::to_string(cam.bitrate) +
@@ -77,9 +88,11 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
                                " "
                                "header-mode=each-idr profile=main "
 
+                               // H264 处理
                                "! h264parse name=parse config-interval=1 "
                                "! video/x-h264,stream-format=avc,alignment=au "
 
+                               // RTMP
                                "! flvmux streamable=true "
                                "! rtmpsink location=\"" +
                                rtmp_url + "\" sync=false async=false";