avmutablecomposition

I am using the below code, for streaming the two videos sequentially. But it is not showing any video in the simulator, its totally blank. Also how can I seek through these two videos. Like, if one video is of 2 minutes and the second is 3 minutes. Now I need to get the total time of these videos and seek through them. When I slide the slider bar to 4 minutes so the 2nd video should be played from minute 2 to onward. Is it possible? - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. NSURL *url1 = [NSURL URLWithString:@"http://www

I am using the below code to try and merge two m4v files stored in the documents folder : CMTime insertionPoint = kCMTimeZero; NSError * error = nil; AVMutableComposition *composition = [AVMutableComposition composition]; AVURLAsset* asset = [AVURLAsset URLAssetWithURL: [assetURLArray objectForKey:kIntroVideo] options:nil]; if (![composition insertTimeRange:CMTimeRangeMake(kCMTimeZero, asset.duration) ofAsset:asset atTime:insertionPoint error:&error]) { NSLog(@"error: %@",error); } insertionPoint = CMTimeAdd(insertionPoint, asset.duration); AVURLAsset* asset2 = [AVURLAsset URLAssetWithURL:

Requirement : It sounds like litte different but this is what I want to achieve. I want to make movie (.mov) file in reverse. Just like how we rewind the movie file. I also want maintain same frame rate as my video is containing. NOTE: I do not just want to play video file in reverse order. I want to generate new movie file playing in reverse order. My Exploration : I thought of below steps to perform to do the same. Make chunks of video files with specific frame rate using AVAssetExportSession Merge all these video chunks into single movie file using AVMutableComposition and

I'm playing with the AVEditDemo project, from Apple's WWDC 2010 sample pack, and I'm trying to change the frame rate of the exported video. The video is exported using an AVMutableComposition on which the frameDuration is set like that: videoComposition.frameDuration = CMTimeMake(1, 30); // 30 fps For some reason, changing the 30 to 25 does not change the framerate of the video exported with the AVAssetExportSession . Does anyone have an idea why? MonsieurDart It seems that the AVAssetExportSession preset takes precedence over the AVVideoComposition frameDuration . I've opened a bug report:

I know this question was asked before (for example here and here ) but I just can't figure out what I'm doing wrong. I have an AVMutableComposition that I use to combine some video clips with some CALayer s that animate on top of them. Everything works ok when I take my AVMutableComposition and combine it with an AVSynchronizedLayer for playback inside an AVPlayerLayer . The video comes out correctly and everything is positioned where it should. My problem is that when I tried to export this thing I tried using AVVideoCompositionCoreAnimationTool instead of AVSynchronizedLayer (that's what the