diff --git a/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java b/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java
index 78955ec..459bbb0 100644
--- a/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java
+++ b/gb28181-wvp-proxy-service/src/main/java/cn/skcks/docking/gb28181/wvp/service/gb28181/Gb28181DownloadService.java
@@ -93,7 +93,7 @@ public class Gb28181DownloadService {
     }
 
     private String videoUrl(String streamId) {
-        return StringUtils.joinWith("/", zlmMediaConfig.getUrl(), "rtp", streamId + ".live.flv");
+        return StringUtils.joinWith("/", zlmMediaConfig.getUrl(), "rtp", streamId + ".live.mp4");
     }
 
     @SneakyThrows