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Re: [videoblogging] geek my ride

By Adrian Miles | Adrian Miles <adrian.miles@...> | adrianlmiles
July 22, 2004 | Post #387 | Topic #327

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/