Captions

My guess is that it can't put the number of characters on one line - e.g. font size, # of characters, default size of the bounding box.

Are you using the Subtitle format? (vs 608)

If so, try creating a Track Style, maximizing the caption bounding box width. Edit one caption in the Program Monitor (double click). See the red box around it? In the Align and Transform section of the Essential Graphics Panel, find "Set Horizontal Size." Put in 200 or such - it won't take that much, but it entered "96" for me - probably the max for my particular sequence. The red box is now maxed to the left and right.

Now, in the Track Style section, "Create Style..." That new style is automatically applied to the whole track, so any double line captions that can be single line should be. Also look at font size if that doesn' t do it. There are some gotchas with track styles, so ask further if this doesn't work.

IF (and it is a big if - I did not test this), the create captions process created a single line and then wrapped it into the box, when you make the box wider, it will unwrap and go to one line.

If you tell create captions to make 2 lines, and some are shorter than they might be, they are broken by a hard return, and my method will not move them onto one line.

Stan