在iOS中平滑视频循环 [英] Smooth video looping in iOS

问题描述

有人可以建议一种方法，通过它可以在iOS中实现视频剪辑的完全平滑无缝循环吗？我尝试了两种方法，两种方法都会在视频循环时产生一个小暂停

Can anyone suggest a method by which you can achieve a completely smooth and seamless looping of a video clip in iOS? I have tried two methods, both of which produce a small pause when the video loops

1）AVPlayerLayer，其中playerItemDidReachEnd通知设置为seekToTime：kCMTimeZero

1) AVPlayerLayer with the playerItemDidReachEnd notification setting off seekToTime:kCMTimeZero

我更喜欢使用AVPlayerLayer（出于其他原因），但这种方法会在循环之间产生大约一秒钟的显着暂停。

I prefer to use an AVPlayerLayer (for other reasons), but this method produces a noticeable pause of around a second between loops.

2）带有setRepeatMode的MPMoviePlayerController：MPMovieRepeatModeOne

2) MPMoviePlayerController with setRepeatMode:MPMovieRepeatModeOne

这会导致较小的暂停，但仍然不完美。

This results in a smaller pause, but it is still not perfect.

我不知道从哪里开始。任何人都可以提出一个灵魂吗？

I'm not sure where to go from here. Can anyone suggest a soultion?

推荐答案

我可以同意@ SamBrodkin的调查结果。

I can concur @SamBrodkin's findings.

[[NSNotificationCenter defaultCenter]
    addObserver: self
    selector: @selector(myMovieFinishedCallback:)
    name: MPMoviePlayerPlaybackStateDidChangeNotification
    object: m_player];

和

-(void) myMovieFinishedCallback: (NSNotification*) aNotification
{
    NSLog( @"myMovieFinishedCallback: %@", aNotification );
    MPMoviePlayerController *movieController = aNotification.object;
    NSLog( @"player.playbackState = %d", movieController.playbackState );
}

为我修复了iOS 5上的非循环问题。

fixed the non-looping issue on iOS 5 for me too.

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