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POHow to use CVPixelBufferPool in conjunction with AVAssetWriterInputPixelBufferAdaptor in iPhone?
 

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  1. POHow to use CVPixelBufferPool in conjunction with AVAssetWriterInputPixelBufferAdaptor in iPhone?
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    <p>I have successfully created video from images using the following code</p> <pre><code>-(void)writeImageAsMovie:(NSArray *)array toPath:(NSString*)path size:(CGSize)size duration:(int)duration { NSError *error = nil; AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL: [NSURL fileURLWithPath:path] fileType:AVFileTypeQuickTimeMovie error:&amp;error]; NSParameterAssert(videoWriter); NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys: AVVideoCodecH264, AVVideoCodecKey, [NSNumber numberWithInt:size.width], AVVideoWidthKey, [NSNumber numberWithInt:size.height], AVVideoHeightKey, nil]; AVAssetWriterInput* writerInput = [[AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings] retain]; AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:writerInput sourcePixelBufferAttributes:nil]; NSParameterAssert(writerInput); NSParameterAssert([videoWriter canAddInput:writerInput]); [videoWriter addInput:writerInput]; //Start a session: [videoWriter startWriting]; [videoWriter startSessionAtSourceTime:kCMTimeZero]; CVPixelBufferRef buffer = NULL; buffer = [self pixelBufferFromCGImage:[[array objectAtIndex:0] CGImage]]; [adaptor appendPixelBuffer:buffer withPresentationTime:kCMTimeZero]; //Write samples: for (int i = 0;i&lt;[array count]; i++) { if([writerInput isReadyForMoreMediaData]) { NSLog(@"inside for loop %d",i); CMTime frameTime = CMTimeMake(1, 20); CMTime lastTime=CMTimeMake(i, 20); //i is from 0 to 24 of the loop above CMTime presentTime=CMTimeAdd(lastTime, frameTime); buffer = [self pixelBufferFromCGImage:[[array objectAtIndex:i] CGImage]]; [adaptor appendPixelBuffer:buffer withPresentationTime:presentTime]; } else { NSLog(@"error"); i--; } } NSLog(@"outside for loop"); //Finish the session: [writerInput markAsFinished]; [videoWriter finishWriting]; } </code></pre> <p>Here I have used <code>CVPixelBufferRef</code>. Instead of this, I want to use the <code>CVPixelBufferPoolRef</code> in conjunction with <code>AVAssetWriterInputPixelBufferAdaptor</code>.</p> <p>Can anybody provide an example which I can debug and use?</p>
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