新版本怎么设置avAsset

[trial]

使用avplayer，3.3.3用下面的code是正常工作的，升级成3.4.1后，报错

 var headers: [AnyHashable: Any] = [:]
            headers["Referer"] = "referer"
            headers["User-Agent"] = "user_agent"
            let asset = AVURLAsset(url: url, options: [
                "AVURLAssetHTTPHeaderFieldsKey": headers
            ])
            player.urlAsset = SJVideoPlayerURLAsset(avAsset: asset)

新版本报错

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'You must override playerWithMedia:completionHandler: in a subclass.'

[changsanjiang]

方便贴一下播放器初始化部分的代码吗？