>Is this a simple setting I'm missing somewhere?
Since nobody here has a neck long enough to wend through the Internet and look at your settings... the answer would be... ?????
How about a screen shot of your settings?
Or, at least, some details
So you're saying this is video from a miniDV camcorder and that you're importing it into a project set up for 4:3 DV, right?
If so, you should NOT try to create a custom frame size for your video under the Share Advanced button. Usually, this does not happen when:
a) your project settings match your source video; and
b) you use one of the preset output settings.
The problem is that you created a custom output size that was not the same shape as the video itself -- hence the black bars at the top and bottom.
This is the challenge with creating a custom size.
In your advanced settings, are you using square pixesl (1:1 PAR)?
If you set it to square pixels, you will then be able to use a custom output size that is 4:3 -- such at 400 px x 300 px.
You created a video that was 420x340, but you apparently didn't consider the pixel aspect ratio and how that would affect your video's size.
By default, FLVs used square pixels. So as long as your video's size is 4x3 shape, should be okay. (420x340 is more of a 21x17 shape.)
Your explanation makes sense; I had not considered the output size because I thought that the application would make all the necessary adjustments to the size I chose.
I was not able to find the square pixel reference (below is the advanced area) but I did resolve the issue. At first I changed the output to be 400 x 300, and while the bars still existed, they were greatly reduced. So I took a screen capture and in Photoshop measured the height of the remaining top bar at 3 pixels. So, I reduced my height in PrE7 by a total of 6 pixels to 294 and that completely corrected the issue. Thanks for your help on this.