This is how i personally compress to quicktime with sony vegas.
So, youve made the monatge or whatever and you want to compress it.
Go to File > Render As
Then Change the 'Save as Type' to 'Quicktime 6'
On 'Template' Select Default then click 'Custom' just to the right of that
Make sure the Video rendering Quality is set to 'Best'
Then at the bottom of the custom template window click video.
'Include Video' box should be ticked
For frame size i use multimedia (320 by 240)
For frame rate select 25 (pal) if your in europe and 29.970 (ntsc) if your in America
For Field order i have it set on 'none (progressive scan)'
Pixel aspect ratio I have set at '1.000'
For Video Format i have 'Sorenson Video 3' Selected, however it changed to this automatically when i downloaded sorenson. I think that 'H.261', 'H.263' and 'H.264' will all be fine though
Compression depth is set at 24bbp colour
Quality is set high on 100%
Data rate is set at 'Basic'
Target rate, KBps (Kbytes/second) This is what i find the most useful thing about compressing with Vegas For an average quality compression set it to about 200, but if your looking for a bit clearer picture go to about 500. But after a few tests you can make your decision. (changing this will also change the size of your files as if you set it at 400 it will be twice as large a file as if it were set at 200)
Tick the keyframes box and set it to every 24 frames
Then at the bottom of the Custom template window select 'Audio'
Tick the include Audio box
Aduio format i have set on IMA 4:1
Sample rate is set on 32,000
Bit depth is set on 16
Channels is set to Stereo
Then Click 'Streaming' at the bottom of the Custom Template window
Tick the 'Prepare for streaming' box
And Omptimization is set at Fast Start
Once youve done this name the Template at the top of the window and save it so you can use it again when its needed, or you can get back to modify it as and when you need.
Here are some examples of the compression
Uncompressed 26.1Mb (.avi)
[url="http://www.vimeo.com/clip:166520"]http://www.vimeo.com/clip:166520[/url] (click download and open the .avi file for full quality)
Compressed at 800Kb/sec 5.84Mb (.mov)
Compressed at 400Kb/sec 3.04Mb (.mov)
Compressed at 200Kb/sec 1.63Mb (.mov)
Compressed at 100Kb/sec 0.95Mb (.mov)