If the project is now interlaced or has been reduced in size, it will not maintain the clarity of the original Keynote.
Or if you created a DV Quicktime it will not maintain the clarity. The only way to maintain the clarity would be to create a Lossless Quicktime at the same frame size as the original. But again, a progressive timeline would yield the best results but not sure if that will work for your application.
Walter Biscardi, Jr.
Creative Genius, Biscardi Creative Media
https://www.biscardicreative.com
Now in Production, “The Rough Cut,” https://www.theroughcutmovie.com
Now editing “Good Eats” in HD for the Food Network
“I reject your reality and substitute my own!” – Adam Savage, Mythbusters
G5 Dual 2.0, AJA Kona 2, Medea FCR2X