我正在尝试使用AVFoundation播放本地视频。我不知道这里发生了什么,只有当我在网上播放视频然后播放本地视频时才有效。如果我只是播放本地视频,它会给我错误:
项目无法播放 资产跟踪已加载,但无法播放。
这是我的代码:
- (void)setURL:(NSURL*)URL
{
if (mURL != URL)
{
[mURL release];
mURL = [URL copy];
NSLog(@"Im here %@",mURL);
}
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:mURL options:nil];
NSArray *requestedKeys = [NSArray arrayWithObjects:kTracksKey, kPlayableKey, nil];
/* Tells the asset to load the values of any of the specified keys that are not already loaded. */
[asset loadValuesAsynchronouslyForKeys:requestedKeys completionHandler:
^{
dispatch_async( dispatch_get_main_queue(),
^{
/* IMPORTANT: Must dispatch to main queue in order to operate on the AVPlayer and AVPlayerItem. */
[self prepareToPlayAsset:asset withKeys:requestedKeys];
});
}];
}
- (void)prepareToPlayAsset:(AVURLAsset *)asset withKeys:(NSArray *)requestedKeys
{
if (!asset.playable)
{
NSString *localizedDescription = NSLocalizedString(@"Item cannot be played", @"Item cannot be played description");
NSString *localizedFailureReason = NSLocalizedString(@"The assets tracks were loaded, but could not be made playable.", @"Item cannot be played failure reason");
NSDictionary *errorDict = [NSDictionary dictionaryWithObjectsAndKeys:
localizedDescription, NSLocalizedDescriptionKey,
localizedFailureReason, NSLocalizedFailureReasonErrorKey,
nil];
NSError *assetCannotBePlayedError = [NSError errorWithDomain:@"StitchedStreamPlayer" code:0 userInfo:errorDict];
[self assetFailedToPrepareForPlayback:assetCannotBePlayedError];
return;
}
if (self.mPlayerItem)
{
[self.mPlayerItem removeObserver:self forKeyPath:kStatusKey];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:AVPlayerItemDidPlayToEndTimeNotification
object:self.mPlayerItem];
}
self.mPlayerItem = [AVPlayerItem playerItemWithAsset:asset];
[self.mPlayerItem addObserver:self
forKeyPath:kStatusKey
options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew
context:AVPlayerDemoPlaybackViewControllerStatusObservationContext];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playerItemDidReachEnd:)
name:AVPlayerItemDidPlayToEndTimeNotification
object:self.mPlayerItem];
seekToZeroBeforePlay = NO;
if (!self.mPlayer)
{
[self setPlayer:[AVPlayer playerWithPlayerItem:self.mPlayerItem]];
[self.player addObserver:self
forKeyPath:kCurrentItemKey
options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew
context:AVPlayerDemoPlaybackViewControllerCurrentItemObservationContext];
[self.player addObserver:self
forKeyPath:kRateKey
options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew
context:AVPlayerDemoPlaybackViewControllerRateObservationContext];
}
if (self.player.currentItem != self.mPlayerItem)
{
[self.mPlayer replaceCurrentItemWithPlayerItem:self.mPlayerItem];
[self syncPlayPauseButtons];
}
[self.mScrubber setValue:0.0];
[self play:nil];
loading.hidden = YES;
}
NSLog提供即时使用的本地URL:
我在这里文件:/// var / mobile / Containers / Data / Application / E806EC2A-2C5D-4B86-AD05-D9FD29E8FDDD / Documents / downloads / VVV%20-%20One%20Direction,%20Band%20Aid%2030, %20Mark%20Ronson,%20Bruno%20Mars,%20OneRepublic,%20DSCVR%20Ones%20To%20Watch%202015.m4v
先谢谢!!
答案 0 :(得分:0)
//您可以使用MPMoviePlayerController播放视频。 添加MediaPlayer.framework(#import)
MPMoviePlayerController *movieController = [[MPMoviePlayerController alloc] init];
movieController.controlStyle = MPMovieControlStyleDefault;//MPMovieControlStyleNone;
[movieController setContentURL:@"Your local Url Path"];
[movieController.view setFrame:CGRectMake (0,0,214,186)];
[self.view addSubview:movieController.view];
[movieController.view bringSubviewToFront:self.view];
[movieController prepareToPlay];
[movieController play];