Я получил это на работу!вот код!Я не написал большую часть этого, я просто подправил некоторые, но единственная проблема заключается в том, что само видео поворачивается для альбомной ориентации в портретном режиме?а затем в альбомной ориентации его портретное видео, но изображение направо вверх!
CALayer *aLayer = [CALayer layer];
aLayer.frame = CGRectMake(5, 0, 320, 480);
aLayer.bounds = CGRectMake(5, 0, 320, 480);
aLayer.contents = (id) [UIImage imageNamed:@"image.png"].CGImage;
aLayer.opacity = 0.5;
aLayer.backgroundColor = [UIColor clearColor].CGColor;
NSURL *url = [NSURL fileURLWithPath:[urlsOfVideos objectAtIndex:self.pageControl.currentPage]];
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:url options:nil];
cmp = [AVMutableComposition composition];
AVMutableCompositionTrack *trackA = [cmp addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
AVAssetTrack *sourceVideoTrack = [[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
[trackA insertTimeRange:CMTimeRangeMake(kCMTimeZero, [asset duration]) ofTrack:sourceVideoTrack atTime:kCMTimeZero error:nil] ;
animComp = [AVMutableVideoComposition videoComposition];
animComp.renderSize = CGSizeMake(320, 480);
animComp.frameDuration = CMTimeMake(1,30);
CALayer *parentLayer = [CALayer layer];
CALayer *videoLayer = [CALayer layer];
parentLayer.frame = CGRectMake(0, 0, 320, 480);
videoLayer.frame = CGRectMake(0, 0, 320, 480);
[parentLayer addSublayer:videoLayer];
[parentLayer addSublayer:aLayer];
animComp.animationTool = [AVVideoCompositionCoreAnimationTool videoCompositionCoreAnimationToolWithPostProcessingAsVideoLayer:videoLayer inLayer:parentLayer];
AVMutableVideoCompositionInstruction *instruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
instruction.timeRange = CMTimeRangeMake(kCMTimeZero, [asset duration]);
AVMutableVideoCompositionLayerInstruction *layerInstruction = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:trackA];
//[layerInstruction setTrackID:2];
[layerInstruction setOpacity:1.0 atTime:kCMTimeZero];
instruction.layerInstructions = [NSArray arrayWithObject:layerInstruction] ;
animComp.instructions = [NSArray arrayWithObject:instruction];
[self exportMovie:self];
и вот код экспорта
-(IBAction) exportMovie:(id)sender{
NSArray *docPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *tempPath = [docPaths objectAtIndex:0];
NSLog(@"Temp Path: %@",tempPath);
NSString *fileName = [NSString stringWithFormat:@"%@/output-anot.MOV",tempPath];
NSFileManager *fileManager = [NSFileManager defaultManager] ;
if([fileManager fileExistsAtPath:fileName ]){
//NSError *ferror = nil ;
//BOOL success = [fileManager removeItemAtPath:fileName error:&ferror];
}
NSURL *exportURL = [NSURL fileURLWithPath:fileName];
AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset:cmp presetName:AVAssetExportPresetHighestQuality] ;
exporter.outputURL = exportURL;
exporter.videoComposition = animComp;
exporter.outputFileType= AVFileTypeQuickTimeMovie;
[exporter exportAsynchronouslyWithCompletionHandler:^(void){
switch (exporter.status) {
case AVAssetExportSessionStatusFailed:{
NSLog(@"Fail");
break;
}
case AVAssetExportSessionStatusCompleted:{
NSLog(@"Success");
break;
}
default:
break;
}
}];
}