Hi,
Well I have had a look using LiveHTTPHeaders and it looks like it is
using a content delivery network to stream video.
There is also a "/low/" path in my requests, so I am guessing the
system may be using content depending on the bandwidth.
It looks like some content is preloaded and some is only downloaded
when you select it.
I guess this is a pretty good strategy for loading - only preload it
if you are going to use it. In the past, I have had a simple sequence
of animations. I made this a preloaded sequence to put the first
animation straight into the "player" and all subsequent clips were
loaded in the background. Because the first clip was about 45 seconds
long, the rest were loaded by the time they were needed, bingo.
I broke this down a bit for a subsequent project, but I am still
trying to balance out the preloading - I even tried preloading PDF's
into the browser cache, which works, but Flash does not get the progress
updates. I had to abandon the preloading during animations though,
because it really slowed down the vector heavy animation - my code is
AS2 and could probably do with some optimising, but this is something
you have to watch out for with background loading - if the player needs
CPU resources, loading lots of small clips in a queue could impact
this. The workaround here was to wait until someone launched a PDF, set
a one-off timer then start the preloading queue - hopefully everything
would load whilst the visitor is reading the PDF, but if they come back
and click a resume button, the loader is paused. It's nearly there, but
like I said, some optimisation is required.
As another example, I would say have a look at the BBC's CDX game
done by Preloaded http://www.bbc.co.uk/history/interactive/ although
there was restrictions on non-UK residents, I think this has been
lifted. This is a very resource heavy game and does a lot of preloading
without intro's etc, but there do seem to be some issues with the video
buffering going pear shaped. I like the game, but would say it took a
long time to load each time and could do with some "intelligent" preloading.
I guess it's a per-project balance, but there are a lot of
preloading tools out there which deal with queue's etc. There is also
the Gaia framework, which looks like it has a sensible approach to
preloading and I think it also provides some options to override some of
this loading of assets in the sitemap too - hopefully Mr Gaia can tell
us more.
HTH, now who's next.
Glen
Glen
Dwayne Neckles wrote:
What do you think?
On Mon, May 12, 2008 at 5:59 PM, Dwayne Neckles <[EMAIL PROTECTED]>
wrote:
http://nolaf.org/
This whole site ( video based) loads extremely quick.. can we discuss some
loading strategies for this kind of content..
Even other video sections on the site load fast..
Do you think a sequential loader was used...
Its not HD but video that was stretched a bit right..
This should be a good discussion..
Dwayne
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Glen Pike
01326 218440
www.glenpike.co.uk <http://www.glenpike.co.uk>
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