我需要在我的AVQueuePlayer
中创建类似无限循环的东西。特别地,我想要在最后一个组件播放完成后重新播放整个AVPlayerItem
的NSArray
。
我必须承认我并不知道如何实现这一点,希望您能给我一些线索。
我需要在我的AVQueuePlayer
中创建类似无限循环的东西。特别地,我想要在最后一个组件播放完成后重新播放整个AVPlayerItem
的NSArray
。
我必须承认我并不知道如何实现这一点,希望您能给我一些线索。
在AVQueuePlayer中循环播放视频序列的最佳方法。
对AVQueuePlayer中的每个playeritem进行观察。
queuePlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
for(AVPlayerItem *item in items) {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(nextVideo:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:item ];
}
-(void) nextVideo:(NSNotification*)notif {
AVPlayerItem *currItem = notif.userInfo[@"object"];
[currItem seekToTime:kCMTimeZero];
[queuePlayer advanceToNextItem];
[queuePlayer insertItem:currItem afterItem:nil];
}
notif.userInfo[@"object"]
为 notif.object
后,这个方法对我有效(iOS 9)。 - Tomas AndrleBOOL videoShouldLoop = YES;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSMutableArray *videoQueue = [[NSMutableArray alloc] init];
AVQueuePlayer *mPlayer;
AVPlayerDemoPlaybackView *mPlaybackView;
// You'll need to get an array of the files you want to queue as NSARrray *fileList:
for (NSString *videoPath in fileList) {
// Add all files to the queue as AVPlayerItems
if ([fileManager fileExistsAtPath: videoPath]) {
NSURL *videoURL = [NSURL fileURLWithPath: videoPath];
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL: videoURL];
// Setup the observer
[[NSNotificationCenter defaultCenter] addObserver: self
selector: @selector(playerItemDidReachEnd:)
name: AVPlayerItemDidPlayToEndTimeNotification
object: playerItem];
// Add the playerItem to the queue
[videoQueue addObject: playerItem];
}
}
// Add the queue array to the AVQueuePlayer
mPlayer = [AVQueuePlayer queuePlayerWithItems: videoQueue];
// Add the player to the view
[mPlaybackView setPlayer: mPlayer];
// If you should only have one video, this allows it to stop at the end instead of blanking the display
if ([[mPlayer items] count] == 1) {
mPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
}
// Start playing
[mPlayer play];
- (void) playerItemDidReachEnd: (NSNotification *)notification
{
// Loop the video
if (videoShouldLoop) {
// Get the current item
AVPlayerItem *playerItem = [mPlayer currentItem];
// Set it back to the beginning
[playerItem seekToTime: kCMTimeZero];
// Tell the player to do nothing when it reaches the end of the video
// -- It will come back to this method when it's done
mPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
// Play it again, Sam
[mPlayer play];
} else {
mPlayer.actionAtItemEnd = AVPlayerActionAtItemEndAdvance;
}
}
AVQueuePlayer
:- (void)viewDidLoad
{
NSMutableArray *vidItems = [[NSMutableArray alloc] init];
for (int i = 0; i < 5; i++)
{
// create file name and make path
NSString *fileName = [NSString stringWithFormat:@"intro%i", i];
NSString *path = [[NSBundle mainBundle] pathForResource:fileName ofType:@"mov"];
NSURL *movieUrl = [NSURL fileURLWithPath:path];
// load url as player item
AVPlayerItem *item = [AVPlayerItem playerItemWithURL:movieUrl];
// observe when this item ends
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:item];
// add to array
[vidItems addObject:item];
}
// initialize avqueueplayer
_moviePlayer = [AVQueuePlayer queuePlayerWithItems:vidItems];
_moviePlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
// create layer for viewing
AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:_moviePlayer];
layer.frame = self.view.bounds;
layer.videoGravity = AVLayerVideoGravityResizeAspectFill;
// add layer to uiview container
[_movieViewContainer.layer addSublayer:layer];
}
当通知被发布时
- (void)playerItemDidReachEnd:(NSNotification *)notification {
AVPlayerItem *p = [notification object];
// keep playing the queue
[_moviePlayer advanceToNextItem];
// if this is the last item in the queue, add the videos back in
if (_moviePlayer.items.count == 1)
{
// it'd be more efficient to make this a method being we're using it a second time
for (int i = 0; i < 5; i++)
{
NSString *fileName = [NSString stringWithFormat:@"intro%i", i];
NSString *path = [[NSBundle mainBundle] pathForResource:fileName ofType:@"mov"];
NSURL *movieUrl = [NSURL fileURLWithPath:path];
AVPlayerItem *item = [AVPlayerItem playerItemWithURL:movieUrl];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:item];
// the difference from last time, we're adding the new item after the last item in our player to maintain the order
[_moviePlayer insertItem:item afterItem:[[_moviePlayer items] lastObject]];
}
}
}
截至2021年3月,已适用于iOS 14
作为一名新手编码者,我想发布我的解决方案,这花费了我一些时间才弄清楚。我的解决方案在UIView内循环使用avqueuplayer,而不使用AVLooper。这个想法来自raywenderlich。您可以忽略UIView包装器等。关键是使用NSKeyValeObservation而不是像其他人建议的通知中心。
class QueuePlayerUIView: UIView {
private var playerLayer = AVPlayerLayer()
private var playerLooper: AVPlayerLooper?
@objc let queuePlayer = AVQueuePlayer()
var token: NSKeyValueObservation?
var clips = [URL]()
func addAllVideosToPlayer() {
for video in clips {
let asset = AVURLAsset(url: video)
let item = AVPlayerItem(asset: asset)
queuePlayer.insert(item, after: queuePlayer.items().last)
}
}
init(videosArr: [URL]) {
super.init(frame: .zero)
self.clips = videosArr
addAllVideosToPlayer()
playerLayer.player = queuePlayer
playerLayer.videoGravity = .resizeAspectFill
layer.addSublayer(playerLayer)
queuePlayer.play()
token = queuePlayer.observe(\.currentItem) { [weak self] player, _ in
if player.items().count == 1 {
self?.addAllVideosToPlayer()
}
}
}
override func layoutSubviews() {
super.layoutSubviews()
playerLayer.frame = bounds
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
NotificationCenter.default.addObserver(forName: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil, queue: nil) {
notification in
print("A PlayerItem just finished playing !")
currentVideo += 1
if(currentVideo >= videoPaths.count) {
currentVideo = 0
}
let url = URL(fileURLWithPath:videoPaths[currentVideo])
let playerItem = AVPlayerItem.init(url: url)
player.insert(playerItem, after: nil)
}
AVQueuePlayer
会删除上次播放的最后一项,因此您需要将刚刚播放的视频添加到队列中,否则它实际上会播放完所有视频!您不能只是使用.seek
跳转到0并再次.play()
,这样是行不通的。
[self performSelector:@selector(setObservationInfo)]; currentIndex = index; AVPlayerItem *videoItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:[arrVideoList objectAtIndex:index]]];
}需要检查:if (currentIndex < [arrVideoList count]-1) { currentIndex++; } else { currentIndex = 0; } [self playVideoAtIndex:currentIndex]; - Dhruv