I have a cross dissolve that I'm adjusting. When I open to set a frame rate I see this: What the hec is 00:00:06:0 stand for because it is not 6 sec or 6 frames. I want a 15 frame duration and cannot figure out how, for just this, dissolve I can adjust that.
Let's say your Sequence is running at 30 frames per second and the Audio is set to 48,000 Hz and Show Audio Time Samples is enabled. A six-second and 15-frame transition would be 0:00:06:24000. Unless, of course, your Project Settings are set to Milliseconds instead of Audio Samples in which case it would be 0:00:06:500.
That said, it's much easier to work with frames rather than samples while assembling picture.