Video Preload

[Jeremy Pope]

The HTML5 video tag has a few options on how a video is loaded on
page load. Currently, MediaGoblin uses ``preload="auto"`` which
causes the whole video to be downloaded on the end users side, even
if they don't actually play the video.
The ``preload="metadata"`` option will only load the metadata and
first frame of the video on page load. This can help site
navigation quite a bit during low-bandwidth times (such as through
3G on phone's wifi hotspot).
I have edited the
``mediagoblin/templates/mediagoblin/media_displays/video.html``
file on my MG instance to have the 'metadata' option. A couple of
examples: `http://url.jpope.org/9a <http://url.jpope.org/9a>`_ and
`http://url.jpope.org/99 <http://url.jpope.org/99>`_