title: Upload more than 500MB video file at amazon s3 bucket and show error
body: <p>Please any one tell me how to upload file more than 500mb at amazon s3 bucket ,because i am uploading file less than 500mb (like 470mb or 430mb) it's working fine but when upload 600mb 700mb file then  show error .and the error is</p>
  
  <pre><code>A PHP Error was encountered
  Severity: User Warning
  Message:  S3::inputFile(): Unable to open input file:
  Filename: libraries/S3.php
  Line Number: 224
  </code></pre>
  
  <p>when i run the phpinfo() function then show the same settings at these below.
  My php.ini settings are</p>
  
  <pre><code>1. upload_max_filesize=2048M 
  2. post_max_size=2048M
  3. max_execution_time=3000 (50 minutes)
  4. memory_limit=1024M
  </code></pre>
  
  <p>file read is 100% but when goes to write then shows error.I don't know where is the problem.</p>
  
  <p>Thank's</p>