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13560283
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2012-11-26T07:17:52.893
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2012-11-26T07:17:52.893
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<h1>Try this code</h1> <pre><code> <ul> <li>(IBAction)createVideo:(id)sender { ///////////// setup OR function def if we move this to a separate function //////////// // this should be moved to its own function, that can take an imageArray, videoOutputPath, etc... // - (void)exportImages:(NSMutableArray *)imageArray // asVideoToPath:(NSString *)videoOutputPath // withFrameSize:(CGSize)imageSize // framesPerSecond:(NSUInteger)fps { NSError *error = nil; // set up file manager, and file videoOutputPath, remove "test_output.mp4" if it exists... //NSString *videoOutputPath = @"/Users/someuser/Desktop/test_output.mp4"; NSFileManager *fileMgr = [NSFileManager defaultManager]; NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]; NSString *videoOutputPath = [documentsDirectory stringByAppendingPathComponent:@"test_output.mp4"]; //NSLog(@"-->videoOutputPath= %@", videoOutputPath); // get rid of existing mp4 if exists... if ([fileMgr removeItemAtPath:videoOutputPath error:&error] != YES) NSLog(@"Unable to delete file: %@", [error localizedDescription]); CGSize imageSize = CGSizeMake(400, 200); NSUInteger fps = 30; //NSMutableArray *imageArray; //imageArray = [[NSMutableArray alloc] initWithObjects:@"download.jpeg", @"download2.jpeg", nil]; NSMutableArray imageArray; NSArray imagePaths = [[NSBundle mainBundle] pathsForResourcesOfType:@"jpg" inDirectory:nil]; imageArray = [[NSMutableArray alloc] initWithCapacity:imagePaths.count]; NSLog(@"-->imageArray.count= %i", imageArray.count); for (NSString* path in imagePaths) { [imageArray addObject:[UIImage imageWithContentsOfFile:path]]; //NSLog(@"-->image path= %@", path); } ////////////// end setup /////////////////////////////////// NSLog(@"Start building video from defined frames."); AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL: [NSURL fileURLWithPath:videoOutputPath] fileType:AVFileTypeQuickTimeMovie error:&error]; NSParameterAssert(videoWriter); NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys: AVVideoCodecH264, AVVideoCodecKey, [NSNumber numberWithInt:imageSize.width], AVVideoWidthKey, [NSNumber numberWithInt:imageSize.height], AVVideoHeightKey, nil]; AVAssetWriterInput* videoWriterInput = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings]; AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:videoWriterInput sourcePixelBufferAttributes:nil]; NSParameterAssert(videoWriterInput); NSParameterAssert([videoWriter canAddInput:videoWriterInput]); videoWriterInput.expectsMediaDataInRealTime = YES; [videoWriter addInput:videoWriterInput]; //Start a session: [videoWriter startWriting]; [videoWriter startSessionAtSourceTime:kCMTimeZero]; CVPixelBufferRef buffer = NULL; //convert uiimage to CGImage. int frameCount = 0; double numberOfSecondsPerFrame = 6; double frameDuration = fps * numberOfSecondsPerFrame; //for(VideoFrame * frm in imageArray) NSLog(@"****************************"); for(UIImage * img in imageArray) { //UIImage * img = frm._imageFrame; buffer = [self pixelBufferFromCGImage:[img CGImage]]; <pre><code>BOOL append_ok = NO; int j = 0; while (!append_ok && j < 30) { if (adaptor.assetWriterInput.readyForMoreMediaData) { //print out status: NSLog(@"Processing video frame (%d,%d)",frameCount,[imageArray count]); CMTime frameTime = CMTimeMake(frameCount*frameDuration,(int32_t) fps); append_ok = [adaptor appendPixelBuffer:buffer withPresentationTime:frameTime]; if(!append_ok){ NSError *error = videoWriter.error; if(error!=nil) { NSLog(@"Unresolved error %@,%@.", error, [error userInfo]); } } } else { printf("adaptor not ready %d, %d\n", frameCount, j); [NSThread sleepForTimeInterval:0.1]; } j++; } if (!append_ok) { printf("error appending image %d times %d\n, with error.", frameCount, j); } frameCount++; </code></pre> } NSLog(@"****************************"); //Finish the session: [videoWriterInput markAsFinished]; [videoWriter finishWriting]; NSLog(@"Write Ended"); //////////////////////////////////////////////////////////////////////////// ////////////// OK now add an audio file to move file ///////////////////// AVMutableComposition* mixComposition = [AVMutableComposition composition]; NSString *bundleDirectory = [[NSBundle mainBundle] bundlePath]; // audio input file... NSString *audio_inputFilePath = [bundleDirectory stringByAppendingPathComponent:@"30secs.mp3"]; NSURL *audio_inputFileUrl = [NSURL fileURLWithPath:audio_inputFilePath]; // this is the video file that was just written above, full path to file is in --> videoOutputPath NSURL *video_inputFileUrl = [NSURL fileURLWithPath:videoOutputPath]; // create the final video output file as MOV file - may need to be MP4, but this works so far... NSString *outputFilePath = [documentsDirectory stringByAppendingPathComponent:@"final_video.mp4"]; NSURL *outputFileUrl = [NSURL fileURLWithPath:outputFilePath]; if ([[NSFileManager defaultManager] fileExistsAtPath:outputFilePath]) [[NSFileManager defaultManager] removeItemAtPath:outputFilePath error:nil]; CMTime nextClipStartTime = kCMTimeZero; AVURLAsset* videoAsset = [[AVURLAsset alloc]initWithURL:video_inputFileUrl options:nil]; CMTimeRange video_timeRange = CMTimeRangeMake(kCMTimeZero,videoAsset.duration); AVMutableCompositionTrack *a_compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid]; [a_compositionVideoTrack insertTimeRange:video_timeRange ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil]; //nextClipStartTime = CMTimeAdd(nextClipStartTime, a_timeRange.duration); AVURLAsset* audioAsset = [[AVURLAsset alloc]initWithURL:audio_inputFileUrl options:nil]; CMTimeRange audio_timeRange = CMTimeRangeMake(kCMTimeZero, audioAsset.duration); AVMutableCompositionTrack *b_compositionAudioTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid]; [b_compositionAudioTrack insertTimeRange:audio_timeRange ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:nextClipStartTime error:nil]; //AVAssetExportSession* _assetExport = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetHighestQuality]; __block AVAssetExportSession* _assetExport = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetPassthrough]; NSLog(@"support file types= %@", [_assetExport supportedFileTypes]); _assetExport.outputFileType = @"com.apple.quicktime-movie"; NSLog(@"support file types= %@", [_assetExport supportedFileTypes]); _assetExport.outputURL = outputFileUrl; [_assetExport exportAsynchronouslyWithCompletionHandler:^{ switch (_assetExport.status) { case AVAssetExportSessionStatusCompleted: // Custom method to import the Exported Video NSLog(@"completed!!!"); break; case AVAssetExportSessionStatusFailed: // NSLog(@"Failed:%@",_assetExport.error); break; case AVAssetExportSessionStatusCancelled: // NSLog(@"Canceled:%@",_assetExport.error); break; default: break; } }]; ///// THAT IS IT DONE... the final video file will be written here... NSLog(@"DONE.....outputFilePath--->%@", outputFilePath); // the final video file will be located somewhere like here: // /Users/caferrara/Library/Application Support/iPhone Simulator/6.0/Applications/D4B12FEE-E09C-4B12-B772-7F1BD6011BE1/Documents/outputFile.mov</li> </ul> } </pre></code>
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