Happy New Year, and thanks for responding. Sorry for the scant info earlier. I will have to power up the iMac and let you know the settings, since I changed them a few times yesterday, but in the meantime, I seemed to have found a solution. Via the Final Cut Movie option, I exported out of Final Cut using what seemed to me an odd combination of HDV and DV settings (will get those and post them here later today). It looked great, with no skipping, but for the final destination, the web, it wouldn’t work, because using that option it will only play within the Final Cut project. So I created a new project, imported the Quicktime file back in, changing the sequence settings to match, then exported out using Quicktime Conversion using custom settings, at a frame rate of 24 since the lower frame rates didn’t work (again, will post all the settings here later). The final product is compact, crisp, and smooth. The only thing I’m not happy with is the audio–it sounds rather tinny to me. I’ll probably go in and tweak it later today, then will go into the settings and put them here.
I think the issues were a few things–I probably had the wrong settings on capture, but the only setting in which the camera would recognize the Canon camera was the HD setting. Weird. I usually use a Sony and have no problem. Then, the project settings were probably off–I had it set for HD to match the capture settings, and it was probably too much for the processor, although I thought the iMac had plenty of muscle going into this. The third issue was the export settings. Somehow all these things created the perfect storm that screwed up the video. Fixing one at a time didn’t work, but fixing two of the three together did the trick.