Apostrophes don't display correctly in 608 Closed Captions
This is either a bug or a not-fully-baked feature: If you add an apostrophe to a 608 caption using the title tool in the canvas, it places a curly apostrophe and then renders incorrectly in the caption stream (as a box character). You have to instead type the apostrophe in the Text panel, where it will insert a straight apostrophe that renders correctly in the caption stream. Apparently curly apostrophes are unsupported in 608 CCs, and the Text panel knows this but the Text Tool doesn't.
Perhaps this is intentional and the goal is to allow curly apostrophes in open captions and supported CC streams, but at the very least Premiere needs to "clean" these characters with appropriate substitutes at the point of writing the CC stream on export.
What would make even more sense to me is for the Canvas text tool and the Text panel to behave exactly the same way, and for both to instantly swap out illegal characters for a particular type of caption stream. That way everything is WYSIWYG.
Peter Murray commented
Working on a 30 minute TV show and finding out all the apostrophes didn't export properly is an absolute nightmare. ADOBE FIX THIS!!!
Ron Inglis commented
Thank you for pointing out that quirk. I can at least type into the Text Window, knowing it's going to be correct. Both modes (Program vs Text Window) of typing an apostrophe in a 608 track should certainly give you the correct apostrophe.
At the very least, the display should display the square block "error character", so you can spot the problem before output. I work primarily on 15s and 30s spots, but this would be a horror show in a 30m documentary. The Program display should accurately reflect what viewers will actually see, otherwise, what is the point?
I've had to do some French, and proofing was extremely difficult, because French has all kinds of accents. Currently 608 allows you to add the French Œ character, which does not exist in the 608 closed caption character set.
Knowing PP didn't handle a simple apostrophe correctly certainly didn't give me confidence that it would get French correct, so I caught that...