How to produce HD video files with best quality/size ratio?

I have used the HC3 for 2 days with iMovie and iDVD on my mac mini.
When i started to import the footage with iMovie, i started to do it manually, moving forward and backward between scenes. This caused iMovie to crash very frequently. I then chose to let iMovie import the footage by itself and everything went fine.
I then easily added the chapters, transfered to iDVD and created a DVD with menus in 1 hour. I am really exited about how fast i was able to create a very nice DVD.
However i am trying to convert the footage from iMovie into a small (100-200 MB) in a 16:9 format but I am getting very big files that are not as sharp as the original or some other examples i saw on the web such as the examples in this page about the Sanyo DMX-HD1:
http://www.akihabaranews.com/review-62-SanyoDMX-HD1%2C+everything+except+for+HD%2C+thedisappointment.html
Would you have any recommendation about the settings to export in quicktime or other format? Which video codec provides the best quality/size ratio? H.264? MPEG4? interlace or not?
~Antheo

I'm not familiar wih HiDef content - look at my hardware specs... I'm based in the early 90ies, way before 1080p etc..
Prof Pixel made some... observations...
http://homepage.mac.com/profpixel/color_bars/colorbars.htm
http://homepage.mac.com/profpixel/iDVDsize.html
most codecs, which are implemented in Quicktime, are between good and excellent; my personal favorit is mp4, but in this case, I prefer the algorithms of http://isquint.org/; it also offers a h264 converter, which, I've read, should be excelllent, a little faster then Apple's and with excellent results...
compression depends very much on content and final output media... I'm afraid, you really need to do some tests on your own....

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Video sharing with best quality

I am not sure if this is the right forum to post it.
I am new to this technology/area of preparing video by getting best quality and no pains in viewing it over web.
I am going to shoot mostly family events or kids activities.
I am planning to buy a HD camcorder.
But to get best quality while capturing the video/source, what to look for in camcorder and any preferences about the models in the market?
After capturing the video at best quality, what are the next steps in preparing this for web delivery? What softwares/tools do i need to use to get the best video quality for sharing over web with out any pain (like buffering/slow start) while viewing?
I am more concerned about sharing videos of best quality and I am OK to spend extra bucks to achieve this.
Please suggest me or direct me to any source where i could get this information.
Thanks, Eswar

Eswar ~ The following is just one suggestion of many possible ways of delivering videos to the Web. Click on this link to see one of Apple's demo _MobileMe Gallery_ videos:
http://gallery.me.com/emily_parker#100624
...at lower right of the video there is a fullscreen button you can click. That video was produced in _iLife '08_ iMovie s/w which allows it to be published in a wide range of sizes for optimal viewing on iPhone, Web, AppleTV, etc. See this video tutorial "_Sharing to MobileMe Gallery_".
In iWeb, you can view a list of all the albums and movies in your MobileMe Gallery, and incorporate any of them in an iWeb page. Visitors can click to go directly to your MobileMe Gallery. See this _video tutorial_ — just over half-way through, where it says: +"To embed a MobileMe Gallery..."+
MobileMe Gallery's maximum video resolution is 960x540. Alternative HD video sharing sites such as Vimeo support 1280x720. And according to this _comparison of video services_, also Dailymotion, YouTube and _HD share_. ...But with 1280x720, depending on their connection speed, some viewers may see buffering/slow start problems.
Here's an example of an HD video on YouTube. ...Once on the page, click on "watch in HD" at lower right of the video and click the fullscreen icon. Another thing to consider is how powerful a CPU would be required on a PC or Mac to view 1280x720 video satisfactorily. Apple's MobileMe Gallery cap of 960x540 may be in regard to this, together with connection speed considerations.
But to get best quality while capturing the video/source, what to look for in camcorder and any preferences about the models in the market?
I don't have any specific recommendations, but one thing to consider is that Apple, like camcorder manufacturers, appears to be moving away from Firewire connectivity and towards USB connectivity — so you may want to concentrate your search for camcorders with that in mind. Let me... Well, see for yourself by clicking here.

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After working during 1 hour, aparently the video is finished, but I can't watch any video.
Apologizes for my poor english

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Message was edited by: John Cogdell - added Note

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How to produce HD video files with best quality/size ratio?

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