update zh-cn/application-dev/media/video-playback.md.

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

zh-cn/application-dev/media/video-playback.md

@@ -445,4 +445,5 @@ export class VideoPlayerDemo {
 ## 相关实例
 针对视频播放开发，有以下相关实例可供参考：
 
-- [`VideoPlayer`：视频播放（eTS）（API9）](https://gitee.com/openharmony/app_samples/tree/master/media/VideoPlayer)
+- [`VideoPlayer`：视频播放（eTS）（API9）](https://gitee.com/openharmony/app_samples/tree/master/media/VideoPlayer)
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+- [视频播放器（eTS）（API 9）](https://gitee.com/openharmony/codelabs/tree/master/Media/VideoPlayerStage)
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