Video Export Is Blurry Only After Editing Video

FAQ: What are the best export settings?

Exactly what is inside that AVI wrapper, and what is your project setting?

Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037

What is a CODEC... a Primer http://forums.adobe.com/thread/546811

What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037

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Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing

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For PC http://www.headbands.com/gspot/ or http://mediainfo.sourceforge.net/en

For Mac http://mediainspector.massanti.com/

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http://blogs.adobe.com/premiereprotraining/2011/02/red-yellow-and-green-render-bars.html

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Once you know exactly what it is you are editing, report back with that information... and your project setting, and if there is a red line above the video in the timeline, which indicates a mismatch between video and project

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The easy way to insure that your video and your project match

See 2nd post for picture of NEW ITEM process http://forums.adobe.com/thread/872666

Original  AVI

1920 x 1080

That's the likely issue, as there is no standardized HD format recording to an AVI file.

If you start out with media you shot yourself using a supported camera format, you will likely fare much better.