title: html5 video tag - delay in loading/playing video
body: <p>Can somebody please explain why there is a significant delay when using the html5 video tag to autoplay identical videos (~1 min/5MB files) that are stored on Amazon S3?</p>
  
  <p>Here's the code that demonstrates the delay (you'll need to wait about 20 seconds for the second video to start):</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
    &lt;body&gt;
      &lt;video autoplay="true" controls="true" src="https://s3-us-west-2.amazonaws.com/testbucket666/long_video_1.MOV"&gt;&lt;/video&gt;
      &lt;video autoplay="true" controls="true" src="https://s3-us-west-2.amazonaws.com/testbucket666/long_video_1.MOV"&gt;&lt;/video&gt;
    &lt;/body&gt;   
  &lt;/html&gt;
  </code></pre>
  
  <p>With the code above, hitting the pause button on the first video will cause the second video to start playing immediately.</p>
  
  <p>On the other hand, if the video files are different (but also 1 min/about 5MB files), both load videos start playing immediately:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
    &lt;body&gt;
      &lt;video autoplay="true" controls="true" src="https://s3-us-west-2.amazonaws.com/testbucket666/long_video_1.MOV"&gt;&lt;/video&gt;
      &lt;video autoplay="true" controls="true" src="https://s3-us-west-2.amazonaws.com/testbucket666/long_video_2.MOV"&gt;&lt;/video&gt;
    &lt;/body&gt;   
  &lt;/html&gt;
  </code></pre>
  
  <p>Just as another data point, if I load two smaller, identical video (~15 seconds, 1.5MB files), both also start playing immediately:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
    &lt;body&gt;
      &lt;video autoplay="true" controls="true" src="https://s3-us-west-2.amazonaws.com/testbucket666/short_video_1.MOV"&gt;&lt;/video&gt;
      &lt;video autoplay="true" controls="true" src="https://s3-us-west-2.amazonaws.com/testbucket666/short_video_1.MOV"&gt;&lt;/video&gt;
    &lt;/body&gt;   
  &lt;/html&gt;
  </code></pre>
  
  <p>Can somebody please explain the cause for delay when two identical long videos are loaded at once and how I can get them to start immediately? (maybe play each video for a second before pausing it to cause subsequent videos to load???)</p>