Merge branch 'master' into jenkins

src/views/coursewarePlay/index.tsx

@@ -289,6 +289,7 @@ export default defineComponent({
                     {m.type === 'VIDEO' ? (
                       <>
                         <video
+                          preload='auto'
                           class="player"
                           data-vid={m.id}
                           src={m.content}