QUICKTIME MOVIE TRAILERS : Another way to set this up is to simply play a few streaming movies (the QuickTime site has a lot of enjoyable trailers) and see at what speed you start to get "buffer under-runs." (My term for what happens when QT starts downloading the movie, gets to where it _thinks_ it's get enough of a head start, starts playing, catches up to the buffer, pauses to fill the buffer up some more, and then starts playing again.) Anyway, at that point, your speed is set too high. (But like Red Beard said, speeds can vary a lot from server to server, day to day, hour to hour.) I believe QT can also automatically select among several streamsavailable with different bitrates. But in order to do this, it has toknow the speed to prefer.Here's another cool link. If you fill out the "survey" form (what type of connection you have, where you are), you get a cool graph showing you how your speed rates: QUICKTIME MOVIE TRAILERS : (But the ratings seem awfully optimistic - maybe my connection is faster than most of the sites I connect _to_?) Okay, I took the speed test and this is what it says:__Your raw speed was 2163317.33 bits per second._____Communications: 2.2 megabits/second_____Storage: 264.1 kilobytes/second_____1 MB file download: 3.9 secondsSo what QuickTime speed should I choose?First of all, it doesn't really matter. What this controls is mainly how big/fast a QuickTime movie/stream the Internet should give you. A person who supplies QuickTime movies over the Net can make several versions of the same movie: One for guys who dial-up, maybe, with a little screen and lower quality video, a bigger better looking one for, say, the DSL people, and maybe a top-quality version with no compromises for cable modem people or folks who are on a local net. When you ask to see the movie, QuickTime can automatically supply whichever version it thinks is appropriate, based on the speed setting you made. QUICKTIME MOVIE TRAILERS : So you can specify any speed you want. But if you choose the highest speed, you'll get the big, georgous-lookingest movies avaiable, but it might choke your computer to play it - you might get stalling, halting behavior. On the other hand, if you choose too low a speed, QuickTime may supply the lower quality versions which won't look as good as better versions your computer may be able to handle.You can just fiddle with it and see what works best by trial and error.Here's how I figured it out. I went to the Apple Movie Trailers site. This site is chock full of current movie previews, all of them professionally digitied into QuickTime, often by Apple itself, and most of them do have the multiple-version support I just described. So pick a good trailer, and view it in various qualities. [Note some movies have few, or no, multiple versions. Depends on the movie creator. But in this area, most of the movies have multiple versions available.] QUICKTIME MOVIE TRAILERS : First go to the QuickTime settings, and set your speed to a very low speed. Then go to QuickTime Trailers and view a movie. On most, you'll get a decent, small-screen version of the trailer.Now go back to QuickTime Settings and set a high speed. Then go back to the browser and tell it to Refresh the page. This makes QuickTime recheck the speed, and this time you should see a bigger, better looking version. In this way, you can play with all the speed settings and figure out which one shows the best movie quality without stalling.As you probably know, the play bar control along the bottom of the movie doe not only show where the movie is currently positioned, but the gray part of the bar shows how much is currently downloaded into your computer. What you want ideally is for the gray bar to stay slightly ahead of the playback position. QUICKTIME MOVIE TRAILERS : Your speed test showed a fast braodband connection (but these things vary according to time of day and lots of other stuff.) My own connection is through a cable modem and the test gives about the same result, 2Mb/sec. I have my QuickTime speed set to T1. I can play all the trailers with no stalling and they look stunning. That area is great for demoing how good QuickTime can look! So I'd suggest you try the 1Mb/sec Cable speed and tweak it up or down from there. If the gray bar shows downloads always compete way before playback does, tweak it up. If the playback catches up with the download and you stall, tweak it down. Myself, I'd rather err on the side of lower quality but no stalling. I hate when movie playback stops in the middle!You really end up swapping them around. Although there are several Speed Testwebsites on the web to see how your broadband is performing, they are notalways indicative of the route you might be using for watching quicktime, forexample. And traffic changes throughout the day. But the speed tests can giveyou a ballpark figure that might actually relate to any local bandwidth, asperhaps capped by your provider.
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