Closed Captions don't appear when I play my video exported with Premiere Pro CC

Question

So, I've spent some time researching this, but can't seem to get anywhere.  I'm fairly new to Premiere Pro and I've created a sequence with closed captions.  I've tried exporting several different ways (Quicktime, H264, etc.).  I've also been careful to include a sidecar closed caption file or to embed the closed captions within the video when exporting using Quicktime.  I've also been sure that both files (the movie and the scc file) are in the same place.  I've tried playing different versions of the exported video on Quicktime Player and VLC, but have had no luck getting the closed captions to appear.  In Quicktime player I've tried it with the closed captions activated, but that doesn't seem to make a difference.  In VLC I've tried the Advanced Open option which enables you to select the subtitles file you want to load with the movie.  Once again, no luck.  I've tried dragging and dropping the .scc file onto the movie while it plays.  I've tried selecting a Subtitle track using the video drop-down menu.  Once again, no luck.  I've tried exporting from Premiere Pro with the sidecar file as a .mcc file and that didn't work either.  I even tried converting the .scc file to an .srt file via some online app.
Anyway, I'm stumped.  All I want to do is to get my movie to play with the subtitles with some simple application.  Any help would be appreciated.  Thanks.
S.@@

Answer 1

Sorry, Fritz. It's been a while since I really looked at the Closed Captioning help page, and I just assumed that the New Caption workflow is covered there. And a second apology because the state of that page is at least partly my fault insofar as I promised our technical writer months ago that I'd help flesh out this page.
You're not doing anything wrong when it comes to adjusting the start/end times for caption blocks. Caption tracks in the Timeline are basically display-only. The apparent handles are really just indicators; they're not interactive. I believe it's on our roadmap to make them interactive, but I have no idea where that enhancement sits in the priority order.
I'm not sure what you mean about "each caption track block [being] limited to just over 30 seconds." If there's a maximum duration for a caption clip, it's probably up at 12 or 24 hours. I've worked with several that are longer than an hour. As for individual caption blocks within a clip, my memory has grown fuzzy in the months since I worked on the feature, but I think the program does not enforce a limit on the duration you can give a block. However, there may be a limit on how long a given caption block will actually get displayed. I thought that limit was 15 seconds, but I just did a test with blocks of 10, 20, and 40 seconds, and all of them had the full assigned duration in the encoded output. Could be that the limit I'm thinking of is standard-specific... Come Monday, I'll have to check with colleagues who have remained closer to the feature set.
Note that if you add a caption clip to a sequence before you've finished adding the blocks, then you'll need to trim out the clip after increasing its duration by adding blocks.
Lastly, although Premiere supports authoring captions from scratch, the feature set was conceived chiefly for importing captions created in a third-party authoring tool and, as needed, revising the content and adjusting the timing.