fix: 导出视频地址只包含已部署通道

internal/web/ui.go

@@ -1702,6 +1702,9 @@ func (u *UI) actionDevicesExportChannels(w http.ResponseWriter, r *http.Request)
                 break
             }
         }
+        if devName == "" {
+            continue
+        }
         rtspPort := unit.RTSPPort
         if rtspPort == "" {
             rtspPort = "8555"