diff --git a/index.html b/index.html
index d7d3401..b92d1f9 100644
--- a/index.html
+++ b/index.html
@@ -279,7 +279,7 @@ $(function(){
                 var topList=JSON.parse(data.dataList[0].content)
                 console.log(topList)
                 // duration
-                html+='<a href="video.html?topicId='+data.dataList[0].topicId+'&tag='+tagNum+'"><div style="background: url(https://zhibocdn.yabolive.net/comm'+topList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_60000,f_jpg,w_510,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="swiper-img">';        
+                html+='<a href="video.html?topicId='+data.dataList[0].topicId+'&tag='+tagNum+'"><div style="background: url(https://zhibocdn.yabolive.net/comm'+topList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_55000,f_jpg,w_510,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="swiper-img">';        
                 html+='<div class="top-img-shadow"></div>';
                 html+='</div>';
                 html+='<div class="swiper-time">'+add0(Math.floor(topList.videos[0].duration/1000/60))+':'+add0(Math.floor(topList.videos[0].duration/1000)%60)+'</div>';
@@ -299,7 +299,7 @@ $(function(){
                 for(var i=1;i<5;i++){
                     var list=data.dataList[i]
                     var videoList=JSON.parse(list.content)
-                    html+='<a href="video.html?topicId='+list.topicId+'&tag='+tagNum+'"><div data-type="'+list.topicId+'" style="background: url(https://zhibocdn.yabolive.net/comm'+videoList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_60000,f_jpg,w_360,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="videos-box">';
+                    html+='<a href="video.html?topicId='+list.topicId+'&tag='+tagNum+'"><div data-type="'+list.topicId+'" style="background: url(https://zhibocdn.yabolive.net/comm'+videoList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_55000,f_jpg,w_360,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="videos-box">';
                     html+='<img class="play-icon" src="images/play-icon.png" alt="">';
                     html+='<div class="video-time">'+add0(Math.floor(videoList.videos[0].duration/1000/60))+':'+add0(Math.floor(videoList.videos[0].duration/1000)%60)+'</div>';
                     html+='<div class="video-more">';
@@ -325,7 +325,7 @@ $(function(){
                     html+='<img src="https://zhibocdn.yabolive.net/comm'+list.face+'?x-oss-process=image/resize,w_80" alt="">';
                     html+='<p>'+list.nickname+'</p>';
                     html+='</div>';
-                    html+='<div style="background: url(https://zhibocdn.yabolive.net/comm'+videoList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_60000,f_jpg,w_510,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="add-video-img">';
+                    html+='<div style="background: url(https://zhibocdn.yabolive.net/comm'+videoList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_55000,f_jpg,w_510,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="add-video-img">';
                     html+='<img class="play-icon" src="images/play-icon.png" alt="">';
                     html+='</div>';
                     html+='<div class="add-video-text-box">';
@@ -369,7 +369,7 @@ $(function(){
                     html+='<img src="https://zhibocdn.yabolive.net/comm'+list.face+'?x-oss-process=image/resize,w_80" alt="">';
                     html+='<p>'+list.nickname+'</p>';
                     html+='</div>';
-                    html+='<div style="background: url(https://zhibocdn.yabolive.net/comm'+videoList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_60000,f_jpg,w_510,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="add-video-img">';
+                    html+='<div style="background: url(https://zhibocdn.yabolive.net/comm'+videoList.videos[0].cover.split('?')[0]+'?x-oss-process=video/snapshot,t_55000,f_jpg,w_510,h_0,m_fast,f_jpg)no-repeat;background-size: cover;background-position-y: center;" class="add-video-img">';
                     html+='<img class="play-icon" src="images/play-icon.png" alt="">';
                     html+='</div>';
                     html+='<div class="add-video-text-box">';