's'

web.py

@@ -148,6 +148,43 @@ def is_tiktok_script(script: str) -> bool:
     return script.endswith(".py") and _stem(script).startswith("tiktok")
 
 
+def _script_targets_hdmi_sink(script: str) -> bool:
+    """与采集卡/板端 HDMI 输出争用同一物理链路的进程（互斥；与 YouTube RTMP 推流无关）。"""
+    if is_tiktok_script(script):
+        return True
+    s = _stem(script).lower()
+    return script.endswith(".sh") and s.startswith("obs")
+
+
+async def _stop_other_hdmi_sink_processes(keep_pm2: str) -> list[str]:
+    sc_keep = script_for_pm2_or_pro(keep_pm2)
+    if not sc_keep or not _script_targets_hdmi_sink(sc_keep):
+        return []
+    await process_backend.ensure_mode()
+    stopped: list[str] = []
+    try:
+        online = await process_backend.online_process_names()
+    except Exception:
+        online = []
+    for name in online:
+        if name == keep_pm2:
+            continue
+        sc = script_for_pm2_or_pro(name)
+        if not sc or not _script_targets_hdmi_sink(sc):
+            continue
+        info = await get_process_info(name)
+        st = (info.get("process_status") or "").lower()
+        if st not in ("online", "running"):
+            continue
+        await process_backend.stop(name)
+        if not str(name).startswith("web"):
+            await force_kill_ffmpeg(str(name), BASE_DIR)
+        stopped.append(str(name))
+    if stopped:
+        await asyncio.sleep(0.85)
+    return stopped
+
+
 def _build_process_monitor():
     return tuple(
         {
@@ -645,8 +682,12 @@ async def start(process: str = Query(..., description="进程名")):
     sc = script_for_pm2_or_pro(process)
     if not sc:
         return JSONResponse({"output": "内部错误：找不到脚本映射"}, status_code=500)
+    stopped = await _stop_other_hdmi_sink_processes(process)
     output = await process_backend.start(process, sc)
-    return JSONResponse({"output": output})
+    prefix = ""
+    if stopped:
+        prefix = "已停止其它占用 HDMI 链路的进程: " + "、".join(stopped) + "\n"
+    return JSONResponse({"output": prefix + output})
 
 
 @app.post("/start")
@@ -689,10 +730,14 @@ async def restart(process: str = Query(..., description="进程名")):
     sc = script_for_pm2_or_pro(process)
     if not sc:
         return JSONResponse({"output": "内部错误：找不到脚本映射"}, status_code=500)
+    stopped = await _stop_other_hdmi_sink_processes(process)
     output = await process_backend.restart(process, sc)
     if not process.startswith("web"):
         await force_kill_ffmpeg(process, BASE_DIR)
-    return JSONResponse({"output": output})
+    prefix = ""
+    if stopped:
+        prefix = "已停止其它占用 HDMI 链路的进程: " + "、".join(stopped) + "\n"
+    return JSONResponse({"output": prefix + output})
 
 
 @app.post("/restart")