AVPlayer does not play video Instantly on iOS 10, while audio playing only

Question

I am creating video with AVAssetExportSession and playing video when it finishes. But Visual Part not showing instantly but only audio is playing instantly. Visual part comes af

Answer 1

The AVVideoCompositionCoreAnimationTool when used in AVAssetExportSession interferes with AVPlayer in iOS 10.0 - 10.1.1. iOS 10.2 fixes this bug and your code should work normally.

Answer 2

Try to set automaticallyWaitsToMinimizeStalling property of AVPlayer to NO in order to start playback immediately.

_avPlayer = [[AVPlayer alloc]init]; //WithPlayerItem:_avPlayerItem];
_avPlayer.automaticallyWaitsToMinimizeStalling = NO;

But if sufficient content is not available for playing then player might stall.

Apple documentation: https://developer.apple.com/reference/avfoundation/avplayer/1643482-automaticallywaitstominimizestal.

Hope this helps.

Answer 3

Im facing the same problem and my solution is take old code into main thread:

        -(void)ExporterManager:(DoCoExporterManager *)manager DidSuccessComplementWithOutputUrl:(NSURL *)outputUrl{
//...
dispatch_async(dispatch_get_main_queue(), ^{
            [_playView setContentUrl:outputUrl.path];
        });
//...
    }

Im using exportAsynchronouslyWithCompletionHandler to process my video.someone thinks that AVVideoCompositionCoreAnimationTool is the cause of the issuehttps://forums.developer.apple.com/thread/62521. I'm not sure,but i do use it.

Just try it!

Hope this helps!

Answer 4

I do next:

First

I add watcher

- (void)attachWatcherBlock {
    [self removeWatcherBlock];
    if (self.videoPlayer) {
        __weak typeof(self) wSelf = self;
        self.timeObserver = [self.videoPlayer addPeriodicTimeObserverForInterval:CMTimeMake(1, NSEC_PER_SEC) queue:dispatch_get_main_queue() usingBlock:^(CMTime time) {
            if (wSelf.playerBlock && wSelf.videoPlayer) {
                CGFloat playTime = CMTimeGetSeconds(wSelf.videoPlayer.currentTime);
                CGFloat duration = CMTimeGetSeconds(wSelf.videoPlayer.currentItem.duration);
                if (playTime > 0.0f) {
                    [wSelf replaceCoverToVideo];
                }
                wSelf.playerBlock(wSelf, playTime, duration);
            }
        }];
    }
 [self.videoPlayer play];
}

And then if in block playTime equals duration call replay

- (void)replay {
    __weak typeof(self) wSelf = self;
    dispatch_async(dispatch_get_main_queue(), ^{
        __strong typeof(wSelf) self = wSelf;
        if (self.videoPlayer) {
            [self.videoPlayer seekToTime:kCMTimeZero];
        }
    });
}

All this in my UIView subclass called NDVideoPlayerView