diff --git a/scripts/dev-env.ps1 b/scripts/dev-env.ps1
index a95f629..0d9cc13 100644
--- a/scripts/dev-env.ps1
+++ b/scripts/dev-env.ps1
@@ -25,7 +25,8 @@ $safesightdConfig = Join-Path $controlDir $SafesightdConfig
 $mediaServerConfig = Join-Path $edgeDir $MediaConfig
 $mediaServerExe = Join-Path $edgeDir "build\media-server.exe"
 
-$rtspUrl = "rtsp://localhost:8554/cam"
+$rtspUrl = "rtsp://10.0.0.49:8554/cam"
+$defaultVideo = "C:\Users\Tellme\Pictures\人脸库\reg_008_unk_011_多人_正面_黑色鞋_白色鞋_1.mp4"
 
 function Write-Banner {
     param([string]$Text)
@@ -65,10 +66,11 @@ function Invoke-Start {
 
     # 2. ffmpeg push
     Write-Banner "2/5 RTSP 推流 (ffmpeg)"
-    if ($VideoFile -and (Test-Path $VideoFile)) {
-        $ffArgs = @("-re", "-stream_loop", "-1", "-i", $VideoFile,
+    $videoToUse = if ($VideoFile -and (Test-Path $VideoFile)) { $VideoFile } elseif (Test-Path $defaultVideo) { $defaultVideo } else { $null }
+    if ($videoToUse) {
+        $ffArgs = @("-re", "-stream_loop", "-1", "-i", $videoToUse,
                     "-c", "copy", "-rtsp_transport", "tcp", "-f", "rtsp", $rtspUrl)
-        Write-Host "  视频文件: $VideoFile"
+        Write-Host "  视频文件: $videoToUse"
     } else {
         # Try to find a webcam
         $webcam = (& $ffmpeg -list_devices true -f dshow -i dummy 2>&1 |
@@ -148,6 +150,7 @@ function Invoke-Start {
     # Summary
     Write-Banner "全部启动完成"
     Write-Host "  RTSP 输入:   $rtspUrl"
+    Write-Host "  默认视频:    $defaultVideo"
     Write-Host "  管理端:      http://localhost:18080"
     Write-Host "  视频监控:    http://localhost:18080/ui/monitor"
     Write-Host "  MinIO:       http://localhost:9001"