Redo everything in the MR

src/components/video_attachment/video_attachment.js

@@ -0,0 +1,31 @@
+
+const VideoAttachment = {
+  props: ['attachment', 'controls'],
+  data () {
+    return {
+      loopVideo: this.$store.state.config.loopVideo
+    }
+  },
+  methods: {
+    onVideoDataLoad (e) {
+      const target = e.srcElement || e.target
+      if (typeof target.webkitAudioDecodedByteCount !== 'undefined') {
+        // non-zero if video has audio track
+        if (target.webkitAudioDecodedByteCount > 0) {
+          this.loopVideo = this.loopVideo && !this.$store.state.config.loopVideoSilentOnly
+        }
+      } else if (typeof target.mozHasAudio !== 'undefined') {
+        // true if video has audio track
+        if (target.mozHasAudio) {
+          this.loopVideo = this.loopVideo && !this.$store.state.config.loopVideoSilentOnly
+        }
+      } else if (typeof target.audioTracks !== 'undefined') {
+        if (target.audioTracks.length > 0) {
+          this.loopVideo = this.loopVideo && !this.$store.state.config.loopVideoSilentOnly
+        }
+      }
+    }
+  }
+}
+
+export default VideoAttachment