We recently just switched our production to anamorphic (SD) widescreen (720x486) and we're running into some issues getting our videos to export from Final Cut Pro (version 6) at the right size. To get things looking correctly, our current workflow is to go to Export->Using QuickTime Conversion. Then from there, leaving the "Use" dropdown on "Default Settings", we click Options, then the Size button from the Movie Settings box and finally change the Dimensions dropdown from the current Compressor native (apparently the default setting, which has dimensions of 854x480) to NTSC 720 x 486 16:9. See screenshot below:
This is obviously a very tedious process to repeat for every video we want to export. Is there some way we can change the default settings (or something to that effect) so that it exports at that size as the default? While the Export Using QuickTime Conversion works well after you change that, if there's another simpler workaround, I'd likely be open to considering it!