avfoundation

I'm trying to merge (append) 3 videos using AVAssetExportSession, but I keep getting this error. Weirdly for 1 or 2 videos it worked. Error Domain=AVFoundationErrorDomain Code=-11820 "Cannot Complete Export" UserInfo=0x458120 {NSLocalizedRecoverySuggestion=Try exporting again., NSLocalizedDescription=Cannot Complete Export} I even tried to redo the function in case of error but what I got is only infinite error message. This is the snippet of my code. AVMutableComposition *mixComposition = [AVMutableComposition composition]; AVMutableCompositionTrack *compositionTrack = [mixComposition

I am getting this error when I am trying to play multiple videos using this swift library ( https://github.com/piemonte/player ). Not sure if it's related to that player, or to the Photos framework or what though. What happens is, I have a view that will display either a photo or a video. Everything works fine a few times until a few videos have played and then this message will pop up, followed by all the videos not being able to play and in their place you just see a black screen, and then I get a memory usage error. I am using a library called SwipeView and here is some relevant code which

I have a weird problem. In my app I am combining multiple audio and video files using the code below. The resulted video seems to work fine once I downloaded it from the device to the computer and play with Quick Time, but whenever I am trying to play the newly composed video using either UIWebView or AVPLayer I can only see first part of merged video files. Furthermore when I tried to use MPMoviePlayerController to play it hangs on "Loading". I can hear audio for all composition. To make it clear I have two arrays: 1- audioPieces with paths to audio files [song1, song2, song3]; 2- moviePieces

I'm playing songs in AVPlayer . I have created a separate view controller for my media player and initialization, and all the methods that I'm using for the player (play, pause, repeat, shuffle) are there in the same view controller. I update a slider like this: [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(sliderUpdate:) userInfo:nil repeats:YES];` - (void) sliderUpdate:(id) sender{ int currentTime = (int)((song.player.currentTime.value)/song.player.currentTime.timescale); slider.value=currentTime; NSLog(@"%i",currentTime); song.currentTime=currentTime; int

I have PlayerView class for displaying AVPlayer's playback. Code from documentation . #import <UIKit/UIKit.h> #import <AVFoundation/AVFoundation.h> @interface PlayerView : UIView @property (nonatomic) AVPlayer *player; @end @implementation PlayerView + (Class)layerClass { return [AVPlayerLayer class]; } - (AVPlayer*)player { return [(AVPlayerLayer *)[self layer] player]; } - (void)setPlayer:(AVPlayer *)player { [(AVPlayerLayer *)[self layer] setPlayer:player]; } @end I set up my AVPlayer (contains video asset with size 320x240) in this PlayerView (with frame.size.width = 100, frame.size.height

I'm trying to merge some audio files (picked via MPMediaPickerController), but the export always fails with error code -12780. When I try to play my composition with an AVPlayer object, it plays correctly. Just the export fails. What am I doing wrong? This is my code: AVAssetExportSession *exportSession; AVPlayer *player; - (void)mergeAudiofiles { // self.mediaItems is an NSArray of MPMediaItems if (self.mediaItems.count == 0) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"No Tracks selected." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert