Closed Caption issues with AI Text to Speech

I have noticed the same behavior and you are not missing anything. From my experience, AI Text to Speech captions in Storyline do not always split or align naturally with the audio because they are generated as a single caption block. When I need better alignment, I convert the captions to manual and adjust the timing myself. Adding clearer punctuation to the source text sometimes helps as well. This feels more like a current limitation than a bug, and I have treated it as an enhancement opportunity.

It's been a minute since I used this feature, and while I love the voices and auto-creation of the captions, it's disappointing the captioning is not aligned to the natural speech breaks. It's annoying, especially if you have to re-record to fix one word...

I am curious what it thinks it is aligning to...a certain # of words or? 🤔

Happy to see that this issue wasn't just me! It's definitely faster to add the cc myself since the automatically generated captions break in such strange places! Hopefully there will be a fix for this because I love the new ai voices, but the captioning takes foreverrrrr

Our team is still experiencing this issue. Does Storyline staff have an estimated time for fixing this bug? It is a lot of extra work to do this for every course. Thank you!!

Captions are aligning to the audio clips for me, but turning off automatic CC generation does not work. I like to add closed captions manually since I find the VO content breaks up illogically when using the auto feature. Clsoed captions are part of the learning experience and knowledge transfer and it's especially critical for hearing-impaired audiences. In addition, when there are edits to VO and I need to re-generate audio, I want to be able to maintain my custom CC. Unfortunately, the AI TTS generator is consistently overwriting that. I've even tried exporting my vtt files to preserve my work, but when I reimport the original vtts, they aren't "taking" - Storyline maintains the automatically-generated CC. Is the team aware of these issues and is a fix underway? 

Also doesn't help that for every caption you need to edit, you need to click the top bar, twice!

Would be better if it was in the right click menu for the audio, just as the Edit TTS is. 

Hello Eric. as commenter Laura stated, the example you posted actually makes our point - that the closed captions are not aligning with the natural breaks in the speech. 

I've attached a sample file in this post. The voice I am using is Matilda. The red arrows in the image here show where I would expect the captions to break but as you can see they are breaking at random locations. 

Hello everyone,

Thank you for sharing your experiences with the AI text-to-speech closed captions!

I've added more voices and TTS to my attached sample project, and I'd like to invite you to test how the closed captions synchronize with the AI audio. Here's the Review 360 link to my course.

I might be wrong, but I have tested Roger, Laura, and Sarah and do not see a marked asynchronicity in these voices. Feel free to share your sample Storyline files with AI audio so we can investigate this issue further. You may also share it privately by sending it along in a support case. We'll delete it when we're done testing.

Having the same issue here as well and am using 'Sarah'.

I'm going to chime in with the same issue. Love the new voices but having to do a lot of cleanups of closed captions. Using Laura.