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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Video is displayed outside border of container with transform property set"
   href="https://bugs.webkit.org/show_bug.cgi?id=164583">164583</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Video is displayed outside border of container with transform property set
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Local Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows 7
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Layout and Rendering
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>regist_game&#64;mail.ru
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>simon.fraser&#64;apple.com
          </td>
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        <pre>Created <span class=""><a href="attachment.cgi?id=294340" name="attach_294340" title="Screenshot of problem page">attachment 294340</a> <a href="attachment.cgi?id=294340&amp;action=edit" title="Screenshot of problem page">[details]</a></span>
Screenshot of problem page

I have an absolutely positioned container with 'transform: translateX(-50%) translateY(-50%)' and 'overflow: hidden' properties. Inside this container I have an absolutely positioned video and several absolutely positioned images. As you can see on the screenshot, 1 pixel of video is displayed to the right and to the bottom of the container, though overflowing part of the container content must be hidden.
Example is available at <a href="http://academy.spaceapp.ru/test">http://academy.spaceapp.ru/test</a>.</pre>
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