修复视频播放点击音量报错 #557，修复编解码信息获取失败

648540858

2022-08-01 5e4a673ecc95d6fb06aec6c5e2f3ec4ffb72584b

 web_src/src/components/dialog/devicePlayer.vue

@@ -374,7 +374,7 @@
                    url: '/zlm/' +this.mediaServerId+ '/index/api/getMediaInfo?vhost=__defaultVhost__&schema=rtmp&app='+ this.app +'&stream='+ this.streamId
                }).then(function (res) {
                    that.tracksLoading = false;
                    if (res.data.code == 0 && res.data.online) {
                    if (res.data.code == 0 && res.data.tracks) {
                        that.tracks = res.data.tracks;
                    }else{
                        that.tracksNotLoaded = true;