diff --git a/app/services/create_watch_video_service.rb b/app/services/create_watch_video_service.rb
index 4629d9c8e..4920374dc 100644
--- a/app/services/create_watch_video_service.rb
+++ b/app/services/create_watch_video_service.rb
@@ -50,7 +50,12 @@ class CreateWatchVideoService < ApplicationService
               # 更新课程视频的时长及是否看完状态
               watch_course_video.watch_duration = params[:watch_duration] if watch_course_video.watch_duration < params[:watch_duration]
               if params[:ed].present? || (watch_course_video.duration >= 300 && (watch_course_video.duration - params[:point].to_i) <= 20)
-                watch_course_video.is_finished = watch_course_video.total_duration >= watch_course_video.duration
+                video_duration = watch_video_history.video.duration.to_i
+                if video_duration > 0
+                  watch_course_video.is_finished = watch_course_video.total_duration >= video_duration
+                else
+                  watch_course_video.is_finished = watch_course_video.total_duration >= watch_course_video.duration
+                end
               end
             end
             watch_course_video.save!
diff --git a/app/services/videos/batch_publish_service.rb b/app/services/videos/batch_publish_service.rb
index 553ffe4f2..3ddc54967 100644
--- a/app/services/videos/batch_publish_service.rb
+++ b/app/services/videos/batch_publish_service.rb
@@ -31,16 +31,23 @@ class Videos::BatchPublishService < ApplicationService
 
         #  非MP4 H264编码的都转码
         code_info = AliyunVod::Service.get_meta_code_info(video.uuid)
+
+        result = AliyunVod::Service.get_play_info(video.uuid) rescue nil
         Rails.logger.info("code_info: #{code_info[:format]}, #{code_info[:codecnamne]}")
         if code_info[:format] == "mp4" && code_info[:codecnamne].present? && code_info[:codecnamne].start_with?('h264')
           video.transcoded = true
-          result = AliyunVod::Service.get_play_info(video.uuid) rescue nil
-          play_url = result['PlayInfoList']['PlayInfo'].first['PlayURL'] if result.present?
-          video.play_url = play_url
+          if result.present? && result['PlayInfoList']['PlayInfo'].first['PlayURL']
+            play_url = result['PlayInfoList']['PlayInfo'].first['PlayURL']
+            video.play_url = play_url
+          end
         else
           AliyunVod::Service.submit_transcode_job(video.uuid, Video::NORMAL_TRANSCODE_GROUP_ID)
         end
 
+        if result.present?
+          video.duration = result['PlayInfoList']['PlayInfo'][0]['Duration'] if result['PlayInfoList']['PlayInfo'][0]['Duration'].present?
+        end
+
         video.save!
 
         if param[:course_id].present?
diff --git a/db/migrate/20200318181442_add_duration_to_video.rb b/db/migrate/20200318181442_add_duration_to_video.rb
new file mode 100644
index 000000000..caf3a70e9
--- /dev/null
+++ b/db/migrate/20200318181442_add_duration_to_video.rb
@@ -0,0 +1,5 @@
+class AddDurationToVideo < ActiveRecord::Migration[5.2]
+  def change
+    add_column :videos, :duration, :float, default: 0
+  end
+end
diff --git a/lib/tasks/get_video_data.rake b/lib/tasks/get_video_data.rake
index f6f85c7d5..efb89e99e 100644
--- a/lib/tasks/get_video_data.rake
+++ b/lib/tasks/get_video_data.rake
@@ -74,4 +74,17 @@ namespace :video do
       end
     end
   end
+
+
+  task :set_duration => :environment do
+    videos = Video.published.where("duration = 0")
+    videos.find_each do |v|
+      result = AliyunVod::Service.get_play_info(v.uuid)
+      if result.present? && result['PlayInfoList']['PlayInfo'][0]['Duration'].present?
+        p "-----#{v.id} , #{result['PlayInfoList']['PlayInfo'][0]['Duration']}"
+        v.update(duration: result['PlayInfoList']['PlayInfo'][0]['Duration'])
+      end
+    end
+    
+  end
 end
\ No newline at end of file
diff --git a/public/react/src/modules/courses/Video/video-play/index.jsx b/public/react/src/modules/courses/Video/video-play/index.jsx
index 77c64f73c..5fb87cc0f 100644
--- a/public/react/src/modules/courses/Video/video-play/index.jsx
+++ b/public/react/src/modules/courses/Video/video-play/index.jsx
@@ -130,7 +130,7 @@ export default ({ src, videoId, logWatchHistory, courseId = null }) => {
         let newTime = el.current.currentTime
         let timeDiff = newTime - lastUpdatedTime
         //currenttime update before Seeking & Seeked fired
-        if (Math.abs(timeDiff) < 0.5) {
+        if (Math.abs(timeDiff) < 10) {
           sumTimePlayed += Math.abs(timeDiff)
           lastUpdatedTime = newTime
           if (!isLoging) {