I've tried everything I can think of but my output to MPEG video narrow black horizontal bars and wide black vertical bars around the video (Windows Media Player). I read online posts, watched tutorials, done web searches. All the advice says to either uncheck the "scale to frame" setting or match the source material to the project settings. I've done those and when they didn't work I experimented with other presets (including output settings). I understand frame size, aspect ratio and scaling but not much else. Anyway, this matchup *looks* like it should work. There are mismatches - most obviously the frame rate - but I don't have any alternatives that get me any closer.
Nikon D90 DSLR
High Speed SD Memory Card
Type: AVI Movie
Image Size: 640x424
Pixel Depth: 24
Frame Rate: 24
Source Audio Format: 11025 Hz - 16 bit - Mono
Project Audio Format: 11025 Hz - 32 bit floating point - Mono
Average Data Rate: 835 KB/second
Pixel Aspect Ratio: 1.0
480p DSLR 640x480p60
Editing Mode: DSLR
Frame size: 640h 480v (1.0000)
Frame rate: 59.94 fps
Pixel Aspect Ratio: Square Pixels (1.0)
Fields: No Fields (Progressive Scans)
Audio Sample Rate: 48,000 samples/second
32 Bit Windows 7
Steve, good question! It wasn't easy to find in the manual. 640x424 (3:2) is the default setting. Go figure! It's one of 3 settings all of which record at 24 fps. Of the other two, one is even more inexplicable: 320x216 (3:2). But the other one SHOULD BE the default: 1280x720 (16:9). There's a DSLR preset in PE9 that looks like an exact match. Thanks!
According to http://www.nikonusa.com/Nikon-Products/Product/Digital-SLR-Cameras/254 46/D90.html#tab-ProductDetail-ProductTabs-TechSpecs that rather odd size is what they call VGA resolution
Of course, using a $100 consumer program to edit video from a $900 (msrp) camera does leave a few options off the table, when it comes to adjusting a project to match the video
If the OP really wants to edit VGA video instead of the HD 1280x720 24fps video the camera will produce, Premiere Pro allows custom projects
I wish that's all it cost! Actually, the D90 isn't what I'd nornally use for video since it doesn't have autofocus (in video mode) and it's mono. It's also a bit on the bulky and fragile side for casul family videos. I used it at Christmas because my camcorder battery went dead. In any event, I DON'T want to edit VGA video. That's what the camera was set to and I didn't realize it. So the $100 consumer program should be fine.