我正在使用AVQueuePlayer按顺序播放视频(尽管我在播放之间会打嗝)。现在我想:
1) 循环该序列中的最后一项(而不是完整项)。
2) 通过这样做,我也想消除打嗝。
下面是我播放视频序列的代码。我怎样才能实现我的两个目标?
[super viewDidLoad];
NSString *secondVideoPath = [[NSBundle mainBundle] pathForResource:@"vid_1" ofType:@"mov"];
NSString *firstVideoPath = [[NSBundle mainBundle] pathForResource:@"vid_2" ofType:@"mov"];
AVPlayerItem *firstVideoItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:firstVideoPath]];
AVPlayerItem *secondVideoItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:secondVideoPath]];
queuePlayer = [AVQueuePlayer queuePlayerWithItems:[NSArray arrayWithObjects:firstVideoItem, secondVideoItem,nil]];
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:queuePlayer];
avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
layer.frame = CGRectMake(0, 0, 1024, 768);
[self.view.layer addSublayer:layer];
[queuePlayer play];
我正在考虑的另一种方法是播放1个长视频并循环播放最后几秒。也许我也可以这样避免打嗝。这种方法是可以实现的吗?如果是,如何调整下面的代码(播放1个视频)?
[super viewDidLoad];
NSString *filepath = [[NSBundle mainBundle] pathForResource:@"vid_long" ofType:@"mov"];
NSURL *fileURL = [NSURL fileURLWithPath:filepath];
avPlayer = [AVPlayer playerWithURL:fileURL];
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];
avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
layer.frame = CGRectMake(0, 0, 1024, 768);
[self.view.layer addSublayer: layer];
[avPlayer play];
以下是循环播放视频的解决方案:-
queuePlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
int k=0;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(itemPlayEnded:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:[queuePlayer currentItem]];
- (void)itemPlayEnded:(NSNotification *)notification
{
k++;
if(k<10-15 times)
{
AVPlayerItem *p = [notification object];
[p seekToTime:kCMTimeZero];
}
}
编辑答案:-上面的答案播放相同的文件,但这对我有效。它播放循环中最后添加的文件:
- (void)itemPlayEnded1:(NSNotification *)notification
{
NSString *secondVideoPath = [[NSBundle mainBundle] pathForResource:@"video2" ofType:@"mp4"];
k=0;
AVPlayerItem *secondVideoItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:secondVideoPath]];
// AVPlayerItem *p = [notification object];
NSMutableArray *currentItemArray = [NSMutableArray arrayWithObjects:secondVideoItem,nil];
AVQueuePlayer* queuePlayer = [[AVQueuePlayer alloc] initWithItems:currentItemArray];
[queuePlayer play];
queuePlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:queuePlayer];
avPlayer.actionAtItemEnd = AVPlayerItemStatusReadyToPlay;
layer.frame = CGRectMake(0, 0, 1024, 768);
[self.view.layer addSublayer:layer];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(itemPlayEnded:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:[queuePlayer currentItem]];
}
我能找到的最好的方法是这个
观察AVQueuePlayer中的每个playeritem。
queuePlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
for(AVPlayerItem *item in items) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(nextVideo:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:item ];
}
在每个nextVideo上,再次插入currentItem以排队播放。确保每个项目都为零。前进到NextItem之后,AVQueuePlayer将从队列中删除currentItem。我们只是重新插入。
-(void) nextVideo:(NSNotification*)notif {
AVPlayerItem *currItem = notif.userInfo[@"object"];
[currItem seekToTime:kCMTimeZero];
[queuePlayer advanceToNextItem];
[queuePlayer insertItem:currItem afterItem:nil];
}
我发现唯一可靠的方法是采用Apple的Using AVQueuePlayer来演示循环播放示例。你需要添加自己的代码来播放初始视频,然后循环播放不同的视频,但这种方法比我尝试过的任何其他方法都要好。