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我使用AVFoundation和MacRuby来处理视频播放。我没有麻烦的视频最初使用下面的代码在我的AVPlayer播放:使用MacRuby时使用replaceCurrentItemWithPlayerItem时出错
videoWindow.setFrame(@frame, display:true, animate:true)
@content_view = self.videoWindow.contentView
@content_view.wantsLayer = true
asset = AVAsset.assetWithURL(url)
item = AVPlayerItem.new
item.initWithAsset(asset)
$video = AVPlayer.alloc.initWithPlayerItem(item)
@player_layer = AVPlayerLayer.playerLayerWithPlayer($video)
@player_layer.Frame = @frame
@content_view.layer.addSublayer(@player_layer)
@player_layer.videoGravity = AVLayerVideoGravityResize
$video.seekToTime(CMTimeMake(4, 1))
$video.play
我在哪里遇到麻烦是,当我试图回放更改为新的视频。为此,我试图使用相同的AVPlayer对象并使用replaceCurrentItemWithPlayerItem命令。当我尝试运行此应用程序停止响应。
asset2 = AVAsset.assetWithURL(@url2)
item2 = AVPlayerItem.new
item2.initWithAsset(asset2)
$video.pause
$video.replaceCurrentItemWithPlayerItem(item2)
我也试过performSelectorOnMainThread,但我得到了相同的结果。
$video.performSelectorOnMainThread('replaceCurrentItemWithPlayerItem:', withObject:item2, waitUntilDone:true)
我想知道是否有重用我的AVPlayer对象播放新项目的方法?