我正在使用AVPlayer播放AVMutableVideoComposition,因为IOS8一切都很好。 但是现在视频开始播放,并且在4或5秒后它停止,如缓冲或类似的东西,声音继续播放,当视频结束AVPlayer循环并播放它没有停止。
我无法解决此问题。
任何帮助都会受到赞赏,
谢谢
答案 0 :(得分:0)
同样在这里,不知道它是否可以算作答案,但无论如何,只需使用
[AVPlayer seekToTime:AVPlayer.currentItem.duration];
自己做第一个循环并避免AVPlayer停止。这是我找到的唯一方式。
答案 1 :(得分:0)
我遇到了同样的问题,我这样解决了.. 而不是直接将videoComposition应用于AVPlayerItem ..我使用 AVAssetExportSession 导出我的视频以应用videoComposition,这反过来给了我一个带有我所有videoComposition应用的视频的Url,现在我可以使用这个contentURL来播放AVPlayer上的视频.. 这就像一个魅力.. 导出视频需要时间,但由于现在渲染视频合成不会在旅途中发生,它将顺利运行..
以下代码可用于导出视频..
AVAssetExportSession *export = [[AVAssetExportSession alloc] initWithAsset:asset presetName:AVAssetExportPreset1280x720];
export.videoComposition = videoComposition;
export.outputURL = [NSURL fileURLWithPath:[[NSTemporaryDirectory() stringByAppendingPathComponent:[NSUUID new].UUIDString] stringByAppendingPathExtension:@"MOV"]];
export.outputFileType = AVFileTypeQuickTimeMovie;
export.shouldOptimizeForNetworkUse = YES;
[export exportAsynchronouslyWithCompletionHandler:^{
dispatch_async(dispatch_get_main_queue(), ^{
if (export.status == AVAssetExportSessionStatusCompleted) {
completionHander(export.outputURL, nil);
} else {
completionHander(nil, export.error);
}
});
}];
答案 2 :(得分:0)
我有同样的问题,但我得到了解决方案。
您应该在playerItem的状态更改为.ReadyToPlay后播放。
我也回答了here,该问题与您的问题类似。
请参阅以下内容。
func startVideoPlayer() {
let playerItem = AVPlayerItem(asset: self.composition!)
playerItem.videoComposition = self.videoComposition!
let player = AVPlayer(playerItem: playerItem)
player.actionAtItemEnd = .None
videoPlayerLayer = AVPlayerLayer(player: player)
videoPlayerLayer!.frame = self.bounds
/* add playerItem's observer */
player.addObserver(self, forKeyPath: "player.currentItem.status", options: .New, context: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector: "playerItemDidReachEnd:", name: AVPlayerItemDidPlayToEndTimeNotification, object: playerItem);
self.layer.addSublayer(videoPlayerLayer!)
}
override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
if keyPath != nil && keyPath! == "player.currentItem.status" {
if let newValue = change?[NSKeyValueChangeNewKey] {
if AVPlayerStatus(rawValue: newValue as! Int) == .ReadyToPlay {
playVideo() /* play after status is changed to .ReadyToPlay */
}
}
} else {
super.observeValueForKeyPath(keyPath, ofObject: object, change: change, context: context)
}
}
func playerItemDidReachEnd(notification: NSNotification) {
let playerItem = notification.object as! AVPlayerItem
playerItem.seekToTime(kCMTimeZero)
playVideo()
}
func playVideo() {
videoPlayerLayer?.player!.play()
}