What is the best HD output settings for YouTube uploading?

Trying out iMovie '09 for the first time.
I shot a 2.5 minute video (AVCHD) and with
the video output settings I selected it is taking
about 20 minutes to encode.
That is way too much time...or is it?
Based on a YouTube video I watched on editing
in iMovie '09 I set my video and audio outputs as follows...
* Export using Quicktime
* File Format: MPP4
* Video Format: H.264
* Data Rate: 8192
* Image Size: 1920x1080HD
* Frame Rate: 60
Encoding: Faster Encode
Audio Data Rate: 256kbps
Encode Quality: Best
Now where can I improve encoding time without sacrificing
a huge amount of quality in my YouTube upload? I really want
the upload to look crisp HD on YouTube.
Thanks

For what it's worth, I used these settings earlier today in a test.
Share/Export Using QuickTime
Movie to MPEG4
Options:
h.264
10,000 kbits per second
1920x1080HD
Frame Rate 30
Keyframe: Automatic
Main Profile
Single Pass.
Here are the [results for 1920x1080|http://www.youtube.com/watch?v=tdBwUzWZf9M]
Other test results are in [this thread|http://discussions.apple.com/thread.jspa?threadID=2579263&tstart=0]
By the way, there is nothing magic about 10,000 kbps. If you used 16,000 kbps, it would be roughly the same data rate as Apple Intermediate Codec. But since YouTube does not penalize you for using a high data rate, as long as it fits their time limit, you can err on the side of high quality. The trick is to start high and then back off until you notice the quality dropping. In your case 8,000 may be fine.
My guess would be your frame rate is the issue. Most AVCHD camera shoot 30 frames per second (or 60 interlaced fields per second).
Message was edited by: AppleMan1958
Message was edited by: AppleMan1958

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