diff --git a/Readme.md b/Readme.md
index 16a9533..4250177 100644
--- a/Readme.md
+++ b/Readme.md
@@ -174,6 +174,12 @@ struct Frame {
     "size": 128,
     "policy": "drop_oldest"              // drop_oldest / drop_newest / block
   },
+  "debug": {                             // 可选：调试/日志开关（生产默认建议关闭）
+    "stats": false,                      // 各节点的周期性统计日志（processed/queue/drops 等）
+    "stats_interval": 100,               // 统计日志间隔（帧数）
+    "detections": false,                 // 部分 AI 节点的前几帧检测框调试输出
+    "ffmpeg_log_level": "error"         // FFmpeg 日志级别（影响 HLS/RTSP mux 的内部日志；默认 error）
+  },
   "...特定节点参数..."
 }
 ```
@@ -181,6 +187,11 @@ struct Frame {
 - `enable = false`：GraphMgr 构建图时可直接忽略该节点及相关 edges。
 - `role` 主要用于配置校验（source 不应有上游，sink 不应有下游等）。
 
+**日志/性能建议：**
+
+- 生产环境建议：`global.log_level=warn`，并保持各节点 `debug.stats=false`，避免高频 stdout/stderr 造成 CPU 抖动。
+- 需要定位丢帧/队列积压时，再对目标节点打开 `debug.stats=true`（并把 `stats_interval` 调大，如 500/1000）。
+
 ### 4.2 INode 接口（含 Drain）
 
 ```cpp
@@ -287,6 +298,10 @@ GraphMgr 负责：
 }
 ```
 
+> 说明：`global.log_level` 只控制框架内部 Logger（debug/info/warn/error）；
+> 若启用了 FFmpeg（例如 publish 的 HLS mux），建议通过节点 `debug.ffmpeg_log_level` 将 FFmpeg 内部日志降到 `error`，
+> 避免出现大量类似 `hls ... Opening ...` 的 info 日志刷屏。
+
 - **优先方式**：使用 `templates + instances` 快速生成多路通道。
 - **高级用法**：直接使用 `graphs` 写复杂拓扑（例如：一条流拆成多个完全不同的分支）。
 
diff --git a/plugins/ai_yolo/ai_yolo_node.cpp b/plugins/ai_yolo/ai_yolo_node.cpp
index 091e668..fb0871b 100644
--- a/plugins/ai_yolo/ai_yolo_node.cpp
+++ b/plugins/ai_yolo/ai_yolo_node.cpp
@@ -11,6 +11,7 @@
 
 #include "ai_scheduler.h"
 #include "node.h"
+#include "utils/logger.h"
 
 #if defined(RK3588_ENABLE_RKNN)
 #include "rknn_api.h"
@@ -273,6 +274,13 @@ public:
         model_input_h_ = config.ValueOr<int>("model_h", 640);
         num_classes_ = config.ValueOr<int>("num_classes", 80);
 
+        if (const SimpleJson* dbg = config.Find("debug"); dbg && dbg->IsObject()) {
+            stats_log_ = dbg->ValueOr<bool>("stats", stats_log_);
+            stats_interval_ = std::max<uint64_t>(
+                1, static_cast<uint64_t>(dbg->ValueOr<int>("stats_interval", static_cast<int>(stats_interval_))));
+            debug_det_ = dbg->ValueOr<bool>("detections", debug_det_);
+        }
+
         // Optional inference throttle. 0 = run every frame.
         infer_interval_ms_ = std::max<int64_t>(0, static_cast<int64_t>(config.ValueOr<int>("infer_interval_ms", 0)));
         if (infer_interval_ms_ <= 0) {
@@ -338,17 +346,18 @@ public:
             }
         }
 
-        std::cout << "[ai_yolo] model loaded via AiScheduler: " << model_path_
-                  << " (handle=" << model_handle_ << ", version="
-                  << (yolo_version_ == YoloVersion::V5 ? "v5" : "v8") << ")\n";
+        LogInfo("[ai_yolo] model loaded via AiScheduler: " + model_path_ +
+                " (handle=" + std::to_string(model_handle_) + ", version=" +
+                (yolo_version_ == YoloVersion::V5 ? "v5" : "v8") + ")");
 #else
-        std::cout << "[ai_yolo] RKNN disabled, will passthrough frames\n";
+        LogWarn("[ai_yolo] RKNN disabled, will passthrough frames");
 #endif
         return true;
     }
 
     bool Start() override {
-        std::cout << "[ai_yolo] started, conf=" << conf_thresh_ << " nms=" << nms_thresh_ << "\n";
+        LogInfo("[ai_yolo] start id=" + id_ + " conf=" + std::to_string(conf_thresh_) +
+                " nms=" + std::to_string(nms_thresh_));
         return true;
     }
 
@@ -359,7 +368,7 @@ public:
             model_handle_ = kInvalidModelHandle;
         }
 #endif
-        std::cout << "[ai_yolo] stopped\n";
+        LogInfo("[ai_yolo] stop id=" + id_);
     }
 
     NodeStatus Process(FramePtr frame) override {
@@ -381,8 +390,8 @@ public:
         PushToDownstream(frame);
         ++processed_;
 
-        if (processed_ % 100 == 0) {
-            std::cout << "[ai_yolo] processed " << processed_ << " frames\n";
+        if (stats_log_ && stats_interval_ > 0 && (processed_ % stats_interval_) == 0) {
+            LogInfo("[ai_yolo] processed=" + std::to_string(processed_) + " id=" + id_);
         }
         return NodeStatus::OK;
     }
@@ -551,11 +560,12 @@ private:
             det.bbox.h = static_cast<float>(Clamp(static_cast<int>(h / scale_h), 0, frame->height - static_cast<int>(det.bbox.y)));
             det.track_id = -1;
 
-            if (det_result->items.size() < 3 && processed_ < 10) {
-                std::cout << "[ai_yolo] det: raw(" << x1 << "," << y1 << "," << w << "," << h
-                          << ") -> bbox(" << det.bbox.x << "," << det.bbox.y << ","
-                          << det.bbox.w << "," << det.bbox.h << ") cls=" << cls_id
-                          << " score=" << det.score << "\n";
+            if (debug_det_ && det_result->items.size() < 3 && processed_ < 10) {
+                LogDebug("[ai_yolo] det: raw(" + std::to_string(x1) + "," + std::to_string(y1) + "," +
+                         std::to_string(w) + "," + std::to_string(h) + ") -> bbox(" +
+                         std::to_string(det.bbox.x) + "," + std::to_string(det.bbox.y) + "," +
+                         std::to_string(det.bbox.w) + "," + std::to_string(det.bbox.h) + ") cls=" +
+                         std::to_string(cls_id) + " score=" + std::to_string(det.score));
             }
 
             det_result->items.push_back(det);
@@ -668,11 +678,12 @@ private:
             det.track_id = -1;
 
             // Debug output for first few detections
-            if (det_result->items.size() < 3 && processed_ < 10) {
-                std::cout << "[ai_yolo] det: raw(" << x1 << "," << y1 << "," << w << "," << h 
-                          << ") -> bbox(" << det.bbox.x << "," << det.bbox.y << "," 
-                          << det.bbox.w << "," << det.bbox.h << ") cls=" << cls_id 
-                          << " score=" << det.score << "\n";
+            if (debug_det_ && det_result->items.size() < 3 && processed_ < 10) {
+                LogDebug("[ai_yolo] det: raw(" + std::to_string(x1) + "," + std::to_string(y1) + "," +
+                         std::to_string(w) + "," + std::to_string(h) + ") -> bbox(" +
+                         std::to_string(det.bbox.x) + "," + std::to_string(det.bbox.y) + "," +
+                         std::to_string(det.bbox.w) + "," + std::to_string(det.bbox.h) + ") cls=" +
+                         std::to_string(cls_id) + " score=" + std::to_string(det.score));
             }
 
             det_result->items.push_back(det);
@@ -697,6 +708,10 @@ private:
     std::vector<std::shared_ptr<SpscQueue<FramePtr>>> output_queues_;
     uint64_t processed_ = 0;
 
+    bool stats_log_ = false;
+    uint64_t stats_interval_ = 100;
+    bool debug_det_ = false;
+
     int64_t infer_interval_ms_ = 0;
     int64_t last_infer_pts_ms_ = 0;
 
diff --git a/plugins/input_rtsp/input_rtsp_node.cpp b/plugins/input_rtsp/input_rtsp_node.cpp
index 455029f..9be6ad7 100644
--- a/plugins/input_rtsp/input_rtsp_node.cpp
+++ b/plugins/input_rtsp/input_rtsp_node.cpp
@@ -1,4 +1,5 @@
 #include <atomic>
+#include <algorithm>
 #include <chrono>
 #include <functional>
 #include <iostream>
@@ -12,6 +13,7 @@
 
 #include "node.h"
 #include "utils/thread_affinity.h"
+#include "utils/logger.h"
 
 #if defined(RK3588_ENABLE_MPP)
 extern "C" {
@@ -53,6 +55,12 @@ public:
         reconnect_sec_ = config.ValueOr<int>("reconnect_sec", 5);
         reconnect_backoff_max_sec_ = config.ValueOr<int>("reconnect_backoff_max_sec", 30);
         fallback_to_stub_on_fail_ = config.ValueOr<bool>("fallback_to_stub_on_fail", false);
+
+        if (const SimpleJson* dbg = config.Find("debug"); dbg && dbg->IsObject()) {
+            stats_log_ = dbg->ValueOr<bool>("stats", stats_log_);
+            stats_interval_ = std::max<uint64_t>(
+                1, static_cast<uint64_t>(dbg->ValueOr<int>("stats_interval", static_cast<int>(stats_interval_))));
+        }
         cpu_affinity_ = ParseCpuAffinity(config);
         if (ctx.output_queues.empty()) {
             std::cerr << "[input_rtsp] no downstream queue configured for node " << id_ << "\n";
@@ -86,16 +94,16 @@ public:
         worker_ = std::thread(&InputRtspNode::LoopStub, this);
 #endif
 
-        std::cout << "[input_rtsp] start url=" << url_ << " fps=" << fps_;
+        std::string mode;
 #if defined(RK3588_ENABLE_MPP)
-        if (use_mpp_) std::cout << " (ffmpeg demux + mpp decode)";
-        else if (use_ffmpeg_) std::cout << " (ffmpeg cpu decode" << (ffmpeg_force_tcp_ ? ", tcp" : ", udp") << ")";
-        else std::cout << " (stub)";
+        if (use_mpp_) mode = " (ffmpeg demux + mpp decode)";
+        else if (use_ffmpeg_) mode = std::string(" (ffmpeg cpu decode") + (ffmpeg_force_tcp_ ? ", tcp)" : ", udp)");
+        else mode = " (stub)";
 #else
-        if (use_ffmpeg_) std::cout << " (ffmpeg cpu decode" << (ffmpeg_force_tcp_ ? ", tcp" : ", udp") << ")";
-        else std::cout << " (stub)";
+        if (use_ffmpeg_) mode = std::string(" (ffmpeg cpu decode") + (ffmpeg_force_tcp_ ? ", tcp)" : ", udp)");
+        else mode = " (stub)";
 #endif
-        std::cout << "\n";
+        LogInfo("[input_rtsp] start id=" + id_ + " url=" + url_ + " fps=" + std::to_string(fps_) + mode);
         return true;
     }
 
@@ -190,11 +198,10 @@ private:
             frame->pts = duration_cast<microseconds>(steady_clock::now().time_since_epoch()).count();
             PushToDownstream(frame);
 
-            if (frame_id_ % 100 == 0) {
-                std::cout << "[input_rtsp] generated frame " << frame_id_ << " queue="
-                          << (out_queues_.empty() ? 0 : out_queues_[0]->Size())
-                          << " drops=" << (out_queues_.empty() ? 0 : out_queues_[0]->DroppedCount())
-                          << "\n";
+            if (stats_log_ && stats_interval_ > 0 && (frame_id_ % stats_interval_) == 0) {
+                LogInfo("[input_rtsp] generated frame=" + std::to_string(frame_id_) +
+                        " queue=" + std::to_string(out_queues_.empty() ? 0 : out_queues_[0]->Size()) +
+                        " drops=" + std::to_string(out_queues_.empty() ? 0 : out_queues_[0]->DroppedCount()));
             }
             std::this_thread::sleep_for(frame_interval);
         }
@@ -354,11 +361,10 @@ private:
         }
 
         PushToDownstream(frame);
-        if (frame_id_ % 100 == 0) {
-            std::cout << "[input_rtsp] recv frame " << frame->frame_id
-                      << " queue=" << (out_queues_.empty() ? 0 : out_queues_[0]->Size())
-                      << " drops=" << (out_queues_.empty() ? 0 : out_queues_[0]->DroppedCount())
-                      << "\n";
+        if (stats_log_ && stats_interval_ > 0 && (frame_id_ % stats_interval_) == 0) {
+            LogInfo("[input_rtsp] recv frame=" + std::to_string(frame->frame_id) +
+                    " queue=" + std::to_string(out_queues_.empty() ? 0 : out_queues_[0]->Size()) +
+                    " drops=" + std::to_string(out_queues_.empty() ? 0 : out_queues_[0]->DroppedCount()));
         }
     }
 
@@ -750,9 +756,10 @@ private:
                 }
 
                 if (extra && extra_size > 0) {
-                    std::cout << "[input_rtsp] send extra_data size=" << extra_size
-                              << " annexb=" << (IsAnnexB(extra, extra_size) ? 1 : 0)
-                              << "\n";
+                    if (stats_log_) {
+                        LogInfo("[input_rtsp] send extra_data size=" + std::to_string(extra_size) +
+                                " annexb=" + std::to_string(IsAnnexB(extra, extra_size) ? 1 : 0));
+                    }
                     if (!dec.SendExtraData(extra, extra_size)) {
                         std::cerr << "[input_rtsp] send extra_data failed\n";
                     }
@@ -776,8 +783,8 @@ private:
                 const bool is_idr = key_flag || ns.has_idr;
                 if (need_idr && !is_idr) {
                     ++dropped_until_idr;
-                    if (!announced_wait_idr || dropped_until_idr % 300 == 0) {
-                        std::cout << "[input_rtsp] waiting for IDR/keyframe; dropped=" << dropped_until_idr << "\n";
+                    if (stats_log_ && (!announced_wait_idr || dropped_until_idr % 300 == 0)) {
+                        LogInfo("[input_rtsp] waiting for IDR/keyframe; dropped=" + std::to_string(dropped_until_idr));
                         announced_wait_idr = true;
                     }
                     return;
@@ -826,32 +833,26 @@ private:
                 last_pts_us = pts_us;
                 have_last_pts = true;
 
-                if (pkt_count <= 3 || pkt_count % 300 == 0) {
-                    std::cout << "[input_rtsp] recv pkt#" << pkt_count
-                              << " size=" << pkt->size
-                              << " pts=";
-                    if (raw_pts == AV_NOPTS_VALUE) std::cout << "NOPTS";
-                    else std::cout << raw_pts;
-                    std::cout << " dts=";
-                    if (raw_dts == AV_NOPTS_VALUE) std::cout << "NOPTS";
-                    else std::cout << raw_dts;
-                    std::cout << " pts_us=" << pts_us
-                              << " key=" << ((pkt->flags & AV_PKT_FLAG_KEY) ? 1 : 0)
-                              << "\n";
+                if (stats_log_ && (pkt_count <= 3 || pkt_count % 300 == 0)) {
+                    LogInfo("[input_rtsp] recv pkt#" + std::to_string(pkt_count) +
+                            " size=" + std::to_string(pkt->size) +
+                            " pts=" + (raw_pts == AV_NOPTS_VALUE ? std::string("NOPTS") : std::to_string(raw_pts)) +
+                            " dts=" + (raw_dts == AV_NOPTS_VALUE ? std::string("NOPTS") : std::to_string(raw_dts)) +
+                            " pts_us=" + std::to_string(pts_us) +
+                            " key=" + std::to_string((pkt->flags & AV_PKT_FLAG_KEY) ? 1 : 0));
                 }
 
                 if (IsAnnexB(pkt->data, static_cast<size_t>(pkt->size))) {
-                    if (pkt_count <= 10) {
+                    if (stats_log_ && pkt_count <= 10) {
                         int sc = GetAnnexBStartCodeSize(pkt->data, static_cast<size_t>(pkt->size));
                         if (sc > 0 && static_cast<size_t>(sc) < static_cast<size_t>(pkt->size)) {
                             uint8_t b0 = pkt->data[sc];
                             int h264_type = b0 & 0x1F;
                             int h265_type = (b0 >> 1) & 0x3F;
-                            std::cout << "[input_rtsp] pkt#" << pkt_count
-                                      << " nal(h264)=" << h264_type
-                                      << " nal(h265)=" << h265_type
-                                      << " first_byte=0x" << std::hex << static_cast<int>(b0) << std::dec
-                                      << "\n";
+                            LogInfo("[input_rtsp] pkt#" + std::to_string(pkt_count) +
+                                    " nal(h264)=" + std::to_string(h264_type) +
+                                    " nal(h265)=" + std::to_string(h265_type) +
+                                    " first_byte=" + std::to_string(static_cast<int>(b0)));
                         }
                     }
                     handle_annexb(pkt->data, static_cast<size_t>(pkt->size),
@@ -942,11 +943,10 @@ private:
 
         PushToDownstream(frame);
 
-        if (frame_id_ <= 3 || frame_id_ % 100 == 0) {
-            std::cout << "[input_rtsp] mpp frame " << frame->frame_id
-                      << " queue=" << (out_queues_.empty() ? 0 : out_queues_[0]->Size())
-                      << " drops=" << (out_queues_.empty() ? 0 : out_queues_[0]->DroppedCount())
-                      << "\n";
+        if (stats_log_ && (frame_id_ <= 3 || (stats_interval_ > 0 && (frame_id_ % stats_interval_) == 0))) {
+            LogInfo("[input_rtsp] mpp frame=" + std::to_string(frame->frame_id) +
+                    " queue=" + std::to_string(out_queues_.empty() ? 0 : out_queues_[0]->Size()) +
+                    " drops=" + std::to_string(out_queues_.empty() ? 0 : out_queues_[0]->DroppedCount()));
         }
     }
 #endif
@@ -968,6 +968,9 @@ private:
     int reconnect_backoff_max_sec_ = 30;
     bool fallback_to_stub_on_fail_ = false;
     std::vector<int> cpu_affinity_;
+
+    bool stats_log_ = false;
+    uint64_t stats_interval_ = 100;
 };
 
 REGISTER_NODE(InputRtspNode, "input_rtsp");
diff --git a/plugins/osd/osd_node.cpp b/plugins/osd/osd_node.cpp
index af33328..19baa86 100644
--- a/plugins/osd/osd_node.cpp
+++ b/plugins/osd/osd_node.cpp
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "node.h"
+#include "utils/logger.h"
 
 namespace rk3588 {
 
@@ -288,12 +289,18 @@ public:
         line_width_ = config.ValueOr<int>("line_width", 2);
         font_scale_ = config.ValueOr<int>("font_scale", 1);
 
+        if (const SimpleJson* dbg = config.Find("debug"); dbg && dbg->IsObject()) {
+            stats_log_ = dbg->ValueOr<bool>("stats", stats_log_);
+            stats_interval_ = std::max<uint64_t>(
+                1, static_cast<uint64_t>(dbg->ValueOr<int>("stats_interval", static_cast<int>(stats_interval_))));
+        }
+
         // Load custom labels from config
         if (const SimpleJson* labels = config.Find("labels")) {
             for (const auto& item : labels->AsArray()) {
                 labels_.push_back(item.AsString(""));
             }
-            std::cout << "[osd] loaded " << labels_.size() << " custom labels\n";
+            LogInfo("[osd] loaded " + std::to_string(labels_.size()) + " custom labels");
         }
 
         input_queue_ = ctx.input_queue;
@@ -310,12 +317,13 @@ public:
     }
 
     bool Start() override {
-        std::cout << "[osd] started, draw_bbox=" << draw_bbox_ << " draw_text=" << draw_text_ << "\n";
+        LogInfo(std::string("[osd] start id=") + id_ + " draw_bbox=" + (draw_bbox_ ? "true" : "false") +
+                " draw_text=" + (draw_text_ ? "true" : "false"));
         return true;
     }
 
     void Stop() override {
-        std::cout << "[osd] stopped\n";
+        LogInfo("[osd] stop id=" + id_);
     }
 
     NodeStatus Process(FramePtr frame) override {
@@ -332,8 +340,8 @@ public:
         PushToDownstream(out);
         ++processed_;
 
-        if (processed_ % 100 == 0) {
-            std::cout << "[osd] processed " << processed_ << " frames\n";
+        if (stats_log_ && stats_interval_ > 0 && (processed_ % stats_interval_) == 0) {
+            LogInfo("[osd] processed=" + std::to_string(processed_) + " id=" + id_);
         }
         return NodeStatus::OK;
     }
@@ -437,6 +445,9 @@ private:
     std::shared_ptr<SpscQueue<FramePtr>> input_queue_;
     std::vector<std::shared_ptr<SpscQueue<FramePtr>>> output_queues_;
     uint64_t processed_ = 0;
+
+    bool stats_log_ = false;
+    uint64_t stats_interval_ = 100;
 };
 
 REGISTER_NODE(OsdNode, "osd");
diff --git a/plugins/preprocess/preprocess_node.cpp b/plugins/preprocess/preprocess_node.cpp
index 20ff609..604a21c 100644
--- a/plugins/preprocess/preprocess_node.cpp
+++ b/plugins/preprocess/preprocess_node.cpp
@@ -11,6 +11,7 @@
 
 #include "node.h"
 #include "utils/dma_alloc.h"
+#include "utils/logger.h"
 
 #if defined(RK3588_ENABLE_RGA)
 #include "im2d.hpp"
@@ -260,6 +261,11 @@ public:
         const bool requested_use_rga = config.ValueOr<bool>("use_rga", true);
         use_rga_ = requested_use_rga;
 
+        if (const SimpleJson* dbg = config.Find("debug"); dbg && dbg->IsObject()) {
+            stats_log_ = dbg->ValueOr<bool>("stats", stats_log_);
+            stats_interval_ = std::max<uint64_t>(1, static_cast<uint64_t>(dbg->ValueOr<int>("stats_interval", static_cast<int>(stats_interval_))));
+        }
+
         input_queue_ = ctx.input_queue;
         if (!input_queue_) {
             std::cerr << "[preprocess] no input queue for node " << id_ << "\n";
@@ -288,8 +294,8 @@ public:
     }
 
     bool Start() override {
-        std::cout << "[preprocess] start dst=" << dst_w_ << "x" << dst_h_
-                  << (use_rga_ ? " (rga)" : " (swscale)") << "\n";
+        LogInfo("[preprocess] start id=" + id_ + " dst=" + std::to_string(dst_w_) + "x" + std::to_string(dst_h_) +
+                (use_rga_ ? " (rga)" : " (swscale)"));
         return true;
     }
 
@@ -331,8 +337,8 @@ private:
     void ProcessPassthrough(FramePtr frame) {
         PushToDownstream(frame);
         ++processed_;
-        if (processed_ % 100 == 0) {
-            std::cout << "[preprocess] passthrough frame " << frame->frame_id << "\n";
+        if (stats_log_ && stats_interval_ > 0 && (processed_ % stats_interval_) == 0) {
+            LogInfo("[preprocess] passthrough frame=" + std::to_string(frame->frame_id) + " id=" + id_);
         }
     }
 
@@ -362,9 +368,10 @@ private:
         if (!need_cvt && !need_resize) {
             PushToDownstream(frame);
             ++processed_;
-            if (processed_ % 100 == 0) {
-                std::cout << "[preprocess] passthrough frame " << frame->frame_id
-                          << " " << frame->width << "x" << frame->height << " (no change)\n";
+            if (stats_log_ && stats_interval_ > 0 && (processed_ % stats_interval_) == 0) {
+                LogInfo("[preprocess] passthrough frame=" + std::to_string(frame->frame_id) +
+                        " " + std::to_string(frame->width) + "x" + std::to_string(frame->height) + " (no change)" +
+                        " id=" + id_);
             }
             return true;
         }
@@ -415,14 +422,19 @@ private:
             return false;
         }
 
-        if (processed_ < 3) {
-            std::cout << "[preprocess] src: " << frame->width << "x" << frame->height
-                      << " fmt=" << static_cast<int>(frame->format) << " rga_fmt=" << src_fmt_rga
-                      << " wstride=" << src_wstride << " hstride=" << src_hstride
-                      << " data_size=" << frame->data_size << "\n";
-            std::cout << "[preprocess] dst: " << out_w << "x" << out_h
-                      << " fmt=" << static_cast<int>(out_fmt) << " rga_fmt=" << dst_fmt_rga
-                      << " wstride=" << dst_wstride << " hstride=" << dst_hstride << "\n";
+        if (stats_log_ && processed_ < 3) {
+            LogInfo("[preprocess] src: " + std::to_string(frame->width) + "x" + std::to_string(frame->height) +
+                    " fmt=" + std::to_string(static_cast<int>(frame->format)) +
+                    " rga_fmt=" + std::to_string(src_fmt_rga) +
+                    " wstride=" + std::to_string(src_wstride) +
+                    " hstride=" + std::to_string(src_hstride) +
+                    " data_size=" + std::to_string(frame->data_size));
+            LogInfo("[preprocess] dst: " + std::to_string(out_w) + "x" + std::to_string(out_h) +
+                    " fmt=" + std::to_string(static_cast<int>(out_fmt)) +
+                    " rga_fmt=" + std::to_string(dst_fmt_rga) +
+                    " wstride=" + std::to_string(dst_wstride) +
+                    " hstride=" + std::to_string(dst_hstride) +
+                    " out_size=" + std::to_string(out_size));
         }
 
         rga_buffer_t src_buf{};
@@ -568,10 +580,10 @@ private:
         PushToDownstream(out_frame);
         ++processed_;
 
-        if (processed_ % 100 == 0) {
-            std::cout << "[preprocess] rga frame " << out_frame->frame_id
-                      << " " << frame->width << "x" << frame->height
-                      << " -> " << out_w << "x" << out_h << "\n";
+        if (stats_log_ && stats_interval_ > 0 && (processed_ % stats_interval_) == 0) {
+            LogInfo("[preprocess] rga frame=" + std::to_string(out_frame->frame_id) +
+                    " " + std::to_string(frame->width) + "x" + std::to_string(frame->height) +
+                    " -> " + std::to_string(out_w) + "x" + std::to_string(out_h));
         }
 
         return true;
@@ -652,10 +664,11 @@ private:
         PushToDownstream(out_frame);
         ++processed_;
 
-        if (processed_ % 100 == 0) {
-            std::cout << "[preprocess] swscale frame " << out_frame->frame_id
-                      << " " << frame->width << "x" << frame->height
-                      << " -> " << out_w << "x" << out_h << "\n";
+        if (stats_log_ && stats_interval_ > 0 && (processed_ % stats_interval_) == 0) {
+            LogInfo("[preprocess] swscale frame=" + std::to_string(out_frame->frame_id) +
+                    " " + std::to_string(frame->width) + "x" + std::to_string(frame->height) +
+                    " -> " + std::to_string(out_w) + "x" + std::to_string(out_h) +
+                    " id=" + id_);
         }
     }
 
@@ -770,6 +783,9 @@ private:
     PixelFormat dst_fmt_ = PixelFormat::UNKNOWN;
     bool use_rga_ = true;
 
+    bool stats_log_ = false;
+    uint64_t stats_interval_ = 100;
+
     std::shared_ptr<SpscQueue<FramePtr>> input_queue_;
     std::vector<std::shared_ptr<SpscQueue<FramePtr>>> output_queues_;
     uint64_t processed_ = 0;
diff --git a/plugins/publish/publish_node.cpp b/plugins/publish/publish_node.cpp
index 9b20afc..1842ab8 100644
--- a/plugins/publish/publish_node.cpp
+++ b/plugins/publish/publish_node.cpp
@@ -1,6 +1,8 @@
 #include <algorithm>
 #include <atomic>
+#include <algorithm>
 #include <chrono>
+#include <cctype>
 #include <cstring>
 #include <filesystem>
 #include <functional>
@@ -16,6 +18,8 @@
 #include <unordered_set>
 #include "node.h"
 
+#include "utils/logger.h"
+
 #include "media/encoded_video_meta.h"
 
 #if defined(RK3588_ENABLE_FFMPEG)
@@ -43,6 +47,27 @@ namespace rk3588 {
 
 namespace {
 inline int Align16(int v) { return (v + 15) & ~15; }
+
+#if defined(RK3588_ENABLE_FFMPEG)
+static int FfmpegLogLevelFromString(std::string s) {
+    for (auto& c : s) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
+    if (s == "quiet" || s == "0") return AV_LOG_QUIET;
+    if (s == "panic" || s == "1") return AV_LOG_PANIC;
+    if (s == "fatal" || s == "2") return AV_LOG_FATAL;
+    if (s == "error" || s == "3") return AV_LOG_ERROR;
+    if (s == "warning" || s == "warn" || s == "4") return AV_LOG_WARNING;
+    if (s == "info" || s == "5") return AV_LOG_INFO;
+    if (s == "verbose" || s == "6") return AV_LOG_VERBOSE;
+    if (s == "debug" || s == "7") return AV_LOG_DEBUG;
+    if (s == "trace" || s == "8") return AV_LOG_TRACE;
+    return AV_LOG_ERROR;
+}
+
+static void ApplyFfmpegLogLevel(const std::string& level) {
+    const int lv = FfmpegLogLevelFromString(level);
+    av_log_set_level(lv);
+}
+#endif
 }
 
 struct OutputConfig {
@@ -87,7 +112,7 @@ public:
         running_ = true;
         monitor_thread_ = std::thread(&AvMuxer::MonitorLoop, this);
 
-        std::cout << "[publish] Muxer initialized async for " << url_ << "\n";
+        LogInfo("[publish] muxer init async for " + url_);
         return true;
     }
 
@@ -148,7 +173,7 @@ private:
                     std::lock_guard<std::mutex> lock(mutex_);
                     ready_ = true;
                     warned_ = false;
-                    std::cout << "[publish] Server ready: " << url_ << "\n";
+                    LogInfo("[publish] muxer server ready: " + url_);
                 }
 
                 // Wait until error occurs or stop requested
@@ -615,6 +640,20 @@ public:
         use_ffmpeg_mux_ = config.ValueOr<bool>("use_ffmpeg_mux", true);
         attach_encoded_meta_ = config.ValueOr<bool>("attach_encoded_meta", !output_queues_.empty());
 
+        if (const SimpleJson* dbg = config.Find("debug"); dbg && dbg->IsObject()) {
+            stats_log_ = dbg->ValueOr<bool>("stats", stats_log_);
+            stats_interval_ = std::max<uint64_t>(
+                1, static_cast<uint64_t>(dbg->ValueOr<int>("stats_interval", static_cast<int>(stats_interval_))));
+#if defined(RK3588_ENABLE_FFMPEG)
+            ffmpeg_log_level_ = dbg->ValueOr<std::string>("ffmpeg_log_level", ffmpeg_log_level_);
+#endif
+        }
+
+#if defined(RK3588_ENABLE_FFMPEG)
+        // Reduce FFmpeg's internal info logs (e.g., HLS "Opening ...") unless explicitly enabled.
+        ApplyFfmpegLogLevel(ffmpeg_log_level_);
+#endif
+
         const SimpleJson* outputs = config.Find("outputs");
         if (outputs && outputs->IsArray()) {
             for (const auto& o : outputs->AsArray()) {
@@ -656,9 +695,9 @@ public:
     }
 
     bool Start() override {
-        std::cout << "[publish] start codec=" << codec_ << " fps=" << fps_ << " gop=" << gop_
-                  << " bitrate=" << bitrate_kbps_ << "kbps"
-                  << (use_mpp_ ? " (mpp venc)" : " (stub)") << "\n";
+        LogInfo("[publish] start id=" + id_ + " codec=" + codec_ + " fps=" + std::to_string(fps_) +
+                " gop=" + std::to_string(gop_) + " bitrate=" + std::to_string(bitrate_kbps_) + "kbps" +
+                (use_mpp_ ? " (mpp venc)" : " (stub)"));
         return true;
     }
 
@@ -864,7 +903,7 @@ private:
                 return false;
             }
 
-            std::cout << "[publish] zlm rtsp server ready: rtsp://0.0.0.0:" << port_ << "/" << app_ << "/" << stream_ << "\n";
+            LogInfo("[publish] zlm rtsp server ready: rtsp://0.0.0.0:" + std::to_string(port_) + "/" + app_ + "/" + stream_);
             return true;
         }
 
@@ -1106,7 +1145,7 @@ private:
                     }
                     if (is_cfg) {
                         self->seen_config_nal_ = true;
-                        std::cout << "[publish] zlm saw config nal" << "\n";
+                        LogDebug("[publish] zlm saw config nal");
                     }
                 }
             }
@@ -1172,10 +1211,10 @@ private:
 
     void ProcessStub(FramePtr frame) {
         ++encoded_frames_;
-        if (encoded_frames_ % 100 == 0) {
-            std::cout << "[publish] stub frame " << frame->frame_id
-                      << " queue=" << input_queue_->Size()
-                      << " drops=" << input_queue_->DroppedCount() << "\n";
+        if (stats_log_ && stats_interval_ > 0 && (encoded_frames_ % stats_interval_) == 0) {
+            LogInfo("[publish] stub frame=" + std::to_string(frame->frame_id) +
+                    " queue=" + std::to_string(input_queue_->Size()) +
+                    " drops=" + std::to_string(input_queue_->DroppedCount()));
         }
     }
 
@@ -1232,10 +1271,10 @@ private:
                     frame->user_meta = meta;
                 }
             ++encoded_frames_;
-            if (encoded_frames_ % 100 == 0) {
-                std::cout << "[publish] encoded frame " << encoded_frames_
-                          << " queue=" << input_queue_->Size()
-                          << " drops=" << input_queue_->DroppedCount() << "\n";
+            if (stats_log_ && stats_interval_ > 0 && (encoded_frames_ % stats_interval_) == 0) {
+                LogInfo("[publish] encoded frames=" + std::to_string(encoded_frames_) +
+                        " queue=" + std::to_string(input_queue_->Size()) +
+                        " drops=" + std::to_string(input_queue_->DroppedCount()));
             }
 #if defined(RK3588_ENABLE_FFMPEG)
             if (use_ffmpeg_mux_ && mux_mgr_) mux_mgr_->Write(pkt);
@@ -1267,6 +1306,13 @@ private:
     std::vector<std::shared_ptr<SpscQueue<FramePtr>>> output_queues_;
     uint64_t encoded_frames_ = 0;
 
+    bool stats_log_ = false;
+    uint64_t stats_interval_ = 100;
+
+#if defined(RK3588_ENABLE_FFMPEG)
+    std::string ffmpeg_log_level_ = "error";
+#endif
+
     mutable std::mutex mu_;
 
     bool attach_encoded_meta_ = false;