Re: [videoblogging] geek my ride

On 19/07/2004, at 8:47 AM, Steve Garfield wrote:

> the 12 mb one I did from the show floor with Final cut pro, no change
> in options, just export quicktime, i think for the web.
>
> the second one used the middle sorenson squeeze setting for dial up
> users.

I'd pitch for somewhere in between 🙂 Dial up is probably going to be
too heavily compressed so look poor. I'd be thinking broadband
delivery, and its important to keep in mind that when you use presets
with codecs the rationale for something like dial up is not:

"settings so that it will look ok other a dialup modem though you might
have to wait five minutes to see it all and play it continously"

but

"this setting is designed so that the video can pretty much play on
demand over dialup".

The difference is simple, most of the presets treat things like
'dialup' as a compression setting so that video will stream in real
time at that data rate, so it has to compress very very hard to achieve
this. But you're not trying to real time stream, you're progressive
streaming. The difference here is that with progressive download if it
takes 5 minutes to download then it will, but all the data arrives. So
since you're using progressive download just accept that if people
really want to see your content (and they're not on broadband) then
they'll have to wait 5 minutes or even 6, for your 2 minutes of footage
to arrive. If they want it, they will wait.

As an aside. a few years ago students were compressing film extracts to
put online in essays. They got permission to do this from copyright
holders. Our rule was always that if the director had quality concerns
they could exercise a veto *once* they'd seen it online. They always
assumed that video was realtime delivery (say Real), but with
progressive download we compress the video to an aesthetic standard and
its up to the client if they want to view it. Realistically that was
around 3 mb a minute, but most extracts were around 30 seconds in
length. Anyway the point of this essay is that no director exercised
their veto, because the work retained decent quality.

cheers
Adrian Miles
………………………………………………………..
hypertext.rmit || hypertext.rmit.edu.au/adrian
interactive networked video || hypertext.rmit.edu.au/vog
research blog || hypertext.rmit.edu.au/vog/vlog/