AVAssetReader Seeking

Question

I am in need of seeking around an audio file and pull out chunks. I am trying to use the AVAssetReader. The bug I am seeing is if I read the audio over a period of time from

Answer 1

It appears to me that you problem is with assuming the following code accurately seeks to startTime:

CMTimeRange timeRange = CMTimeRangeMake(startTime, kCMTimePositiveInfinity);
assetReader.timeRange = timeRange;

You can test this using a call to

CMSampleBufferGetOutputPresentationTimeStamp(nextBuffer);

From this you will be able to see the exact time (in seconds) of start of the buffer.