Add recommended FFmpeg decode RTSP pipeline

configs/person_shoe_two_stage_recommended.json

@@ -0,0 +1,170 @@
+{
+  "queue": {
+    "size": 8,
+    "strategy": "drop_oldest"
+  },
+  "graphs": [
+    {
+      "name": "person_shoe_two_stage_recommended",
+      "executor": {
+        "batch_size": 2,
+        "run_budget": 8
+      },
+      "nodes": [
+        {
+          "id": "in",
+          "type": "input_rtsp",
+          "role": "source",
+          "enable": true,
+          "url": "rtsp://10.0.0.49:8554/cam",
+          "fps": 30,
+          "width": 1920,
+          "height": 1080,
+          "use_ffmpeg": true,
+          "use_mpp": false,
+          "force_tcp": true
+        },
+        {
+          "id": "pre_rgb",
+          "type": "preprocess",
+          "role": "filter",
+          "enable": true,
+          "dst_w": 1920,
+          "dst_h": 1080,
+          "dst_format": "rgb",
+          "dst_packed": true,
+          "resize_mode": "stretch",
+          "rga_gate": "person_shoe_two_stage_recommended",
+          "use_rga": true
+        },
+        {
+          "id": "person_det",
+          "type": "ai_yolo",
+          "role": "filter",
+          "enable": true,
+          "cpu_affinity": [4],
+          "use_rga": true,
+          "rga_gate": "person_shoe_two_stage_recommended",
+          "rga_max_inflight": 4,
+          "dst_packed": true,
+          "use_dma_input": true,
+          "infer_fps": 2,
+          "infer_phase_ms": 0,
+          "model_path": "./models/yolov8n-640.rknn",
+          "model_version": "v8",
+          "model_w": 640,
+          "model_h": 640,
+          "num_classes": 80,
+          "conf": 0.35,
+          "nms": 0.45,
+          "class_filter": [0],
+          "bbox_expand": {
+            "enable": true,
+            "class_id": 0,
+            "left": 0.06,
+            "right": 0.06,
+            "top": 0.04,
+            "bottom": 0.16
+          }
+        },
+        {
+          "id": "person_trk",
+          "type": "tracker",
+          "role": "filter",
+          "enable": true,
+          "cpu_affinity": [5],
+          "mode": "bytetrack_lite",
+          "per_class": true,
+          "track_classes": [0],
+          "high_th": 0.6,
+          "low_th": 0.15,
+          "iou_th": 0.3,
+          "max_age_ms": 700,
+          "min_hits": 2
+        },
+        {
+          "id": "shoe_det",
+          "type": "ai_shoe_det",
+          "role": "filter",
+          "enable": true,
+          "cpu_affinity": [6],
+          "use_rga": true,
+          "rga_gate": "person_shoe_two_stage_recommended",
+          "rga_max_inflight": 4,
+          "dst_packed": true,
+          "use_dma_input": false,
+          "infer_fps": 2,
+          "infer_phase_ms": 250,
+          "model_path": "./models/shoe_detector_openimages_ppe_v1.rknn",
+          "model_w": 640,
+          "model_h": 640,
+          "conf": 0.20,
+          "nms": 0.45,
+          "v8_box_format": "cxcywh",
+          "append_detections": true,
+          "dynamic_roi": {
+            "enable": true,
+            "person_class_id": 0,
+            "shoe_class_id": 1,
+            "debug_roi_class_id": -1,
+            "max_rois": 1,
+            "min_person_height": 80,
+            "x_offset": -0.20,
+            "y_offset": 0.68,
+            "width_scale": 1.40,
+            "height_scale": 0.50
+          }
+        },
+        {
+          "id": "osd",
+          "type": "osd",
+          "role": "filter",
+          "enable": true,
+          "cpu_affinity": [7],
+          "draw_bbox": true,
+          "draw_text": false,
+          "use_rga_bbox": false,
+          "labels": ["person", "shoe"]
+        },
+        {
+          "id": "post",
+          "type": "preprocess",
+          "role": "filter",
+          "enable": true,
+          "cpu_affinity": [7],
+          "dst_w": 1920,
+          "dst_h": 1080,
+          "dst_format": "nv12",
+          "resize_mode": "stretch",
+          "rga_gate": "person_shoe_two_stage_recommended",
+          "use_rga": true
+        },
+        {
+          "id": "pub",
+          "type": "publish",
+          "role": "filter",
+          "enable": true,
+          "cpu_affinity": [3],
+          "codec": "h264",
+          "fps": 30,
+          "bitrate_kbps": 2000,
+          "mpp_output_timeout_ms": 50,
+          "mpp_packet_wait_ms": 10,
+          "use_mpp": true,
+          "outputs": [
+            {"proto": "rtsp_server", "port": 8555, "path": "/live/cam1"}
+          ]
+        }
+      ],
+      "edges": [
+        ["in", "pre_rgb"],
+        ["pre_rgb", "person_det"],
+        ["person_det", "person_trk"],
+        ["person_trk", "shoe_det", {"queue": {"size": 16, "strategy": "drop_oldest"}}],
+        ["shoe_det", "osd", {"queue": {"size": 16, "strategy": "drop_oldest"}}],
+        ["osd", "post", {"queue": {"size": 32, "strategy": "drop_oldest"}}],
+        ["post", "pub", {"queue": {"size": 64, "strategy": "drop_oldest"}}]
+      ]
+    }
+  ]
+}

docs/deployment.md

@@ -149,6 +149,27 @@ sudo ./scripts/ops.sh ddr-restore
 - `restore`：恢复到切换前保存的 governor/min/max
 - 默认节点为 `/sys/class/devfreq/dmc`
 
+### 3.2 RTSP 解码推荐
+
+对高位监控、烟雾多、偶发 H.264 参考帧异常的 RTSP 源，优先使用 `FFmpeg CPU decode + MPP encode` 组合。
+
+推荐配置：
+
+```bash
+./build/media-server -c configs/person_shoe_two_stage_recommended.json
+```
+
+说明：
+
+- 输入端：`use_ffmpeg: true`、`use_mpp: false`
+- 输出端：仍然使用 `MPP` 编码
+- 适用场景：源流在 VLC 中播放正常，但项目内 `ffmpeg demux + mpp decode` 会出现固定画面卡顿
+
+排障建议：
+
+- 若 `configs/sample_rtsp_publish_only.json` 会卡，但 VLC 直接拉原始 RTSP 源不卡，优先切到 FFmpeg 解码版验证
+- 若 FFmpeg 解码版不卡，则说明问题主要在 MPP 解码兼容性，而不是 AI 链路或发布链路
+
 ### 4. 卸载
 
 ```bash