I uploaded mpeg4 file from my local to s3. the file size is 10M on local while the file size is just under 1M. compression itself doesn't matter, but the uploaded file on s3 cause a/v async problem. I want to solve the a/v async issue. My code is as follows.

TransferUtility utility = new TransferUtility(ConfigurationManager.AppSettings["AmazonAccessKey"], ConfigurationManager.AppSettings["AmazonSecretKey"], RegionEndpoint.USWest2);
// making a TransferUtilityUploadRequest instance
TransferUtilityUploadRequest request = new TransferUtilityUploadRequest();        

if (subDirectoryInBucket == "" || subDirectoryInBucket == null)
{
    request.Key = fileNameInS3; //file name up in S3
}
else
{   // subdirectory and bucket name
    request.Key = subDirectoryInBucket + @"/" + fileNameInS3; //file name up in S3                                
}
request.BucketName = bucketName; //no subdirectory just bucket name
request.CannedACL = S3CannedACL.PublicRead;
request.FilePath = localFilePath; //local file name
utility.Upload(request); //commensing the transfer

If there is anyone who experience this problem, please help me. Thanks in advance.