void ReadingAndWritingDidFinish(bool success, NSError error)
{
if (!success)
{
assetReader.CancelReading();
assetWriter.CancelWriting();
}
// Tear down
assetReader.Dispose();
assetReader = null;
assetWriter.Dispose();
assetWriter = null;
audioSampleBufferChannel = null;
videoSampleBufferChannel = null;
cancellationTokenSrc = null;
completionProc(error);
}
