Quicktime self-contained movie stalls

How do I get my self-contained movie to load for a few seconds before it automatically starts? I am getting minor stalls in the beginning of the movie while it is starting to load. After it loads for 10 seconds or so, then it's smooth sailing.
Here's the link: http://www.smolinskistudios.com/Design06sc.mov
specs h264 640x480 self-contained
Thanks in advance,
Dick

How do I get my self-contained movie to load for a few seconds before it automatically starts? I am getting minor stalls in the beginning of the movie while it is starting to load. After it loads for 10 seconds or so, then it's smooth sailing.While some of the "power users" may know of a way to script an "auto start" for your clip, I do not. Spent several hours a day over the last few days performing "segmentation analysis" of clip characteristics. Based on these results and what little you have said regarding settings used, it might be best to simply attemt to avoid the problem rather than "fix" it. (All of my attempts to reconvert the file either created a green bar artifact, reduced quality to an unacceptable level, or delayed auto start until all tracks were pre-loaded even when only one added "ramp adjustment" track was so set.) Of course, you can always allow the user to manually start playback here.
RECAP: The primary problem here seems to be one of the speed with which the data rate "ramps up/down" during playback. QT compares data rate to file length in order to automatically calculate the start play delay needed to buffer enough data to theoretically prevent an "overrun" during playback. In this case, you committed two cardinal sins -- failure to limit data rate to Internet compatible connection speeds and not limiting quantimization excursion to this range. Failure to do this allows the instantaneous video data rate to monotonically ramp from near zero Mbps to nearly 4 Mbps causing QT to overrun, recalculate, rebuffer, and restart numerous times during the initial 7-8 seconds of play. This is likely due to use of the H.264 codec in the "muti-pass" mode coupled with setting the "Quality slider" for maximum data rate excursion with a possible "auto" frame rate setting. Unfortunately, your content is deceptively complex in motion (allowed to ramp up to high) and transition (can't ramp up fast enough) sequences when compared to the rest of the content (allowed to ramp down too low). Like CD/VCD/DVD playback, "progressing streaming" plays best when you use a "constant throughput" rather than "constant quality" encoding strategy. I.e., you might try using the single-pass mode, using 50-75% quality setting, and adjusting the key frame frequency (or better yet manually inserting extra key frame markers to transitions if using an editor that allows this).
An interesting exercise. Sorry I couldn't come up with any better suggestions.

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Message was edited by: Yongwon Lee

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Message was edited by: P.N. Barnes
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