Forum Discussion
Audio Desync / Loading
Hey ThierryEMMANUEL,
Thanks for jumping in and sharing your experience! I completely understand how frustrating this can feel, especially when the behavior impacts client delivery.
While we recommend authoring on the latest Storyline versions for stability and fixes, this is helpful insight and something we’d like to investigate further. Since you're seeing this issue across multiple projects and versions, do you mind uploading a sample .story file for testing? You can share that file here in the discussion or through a support case.
In the meantime, I have some follow-up questions to help us troubleshoot this better:
- Are you using multiple short clips on the Timeline, Triggered audio, or both?
- Are your audio files externally sourced, AI-generated, or a mix of both?
- Does the behavior occur consistently across all browsers?
Looking forward to hearing from you!
StevenBenassi, I have noticed an increase in the same issues with our audio in Storyline: it either gets clipped or delayed when viewed. We have practiced adding a buffer before and after the audio on the timeline. And still having the issue.
Hello CarrieAnders421,
I understand that even when adding a buffer before and after audio narration, it still seems to get clipped when published. Gosh, that's frustrating! I'm happy to learn more.
- Are your audio files externally sourced, AI-generated, or a mix of both?
- What browser are your learners using to view your course? Do they experience this in an incognito window?
- Are you experiencing this in multiple files or just this one?
I'm curious if you experience this behavior when testing out your course in SCORM Cloud or when publishing to Review 360. We'd be happy to have our talented Support Engineers weigh in within a support case.
Looking forward to hearing from you!
Hi LucianaPiazza,
1. All our audio files are external and inserted on the timeline. We record our own audio file.
2. We internal users use Chrome and Edge; however, I am not sure what our external users are using. We recommend Chrome. However, they would use any browser such as Edge, Chrome, Firefox, and maybe some users who have Safari.
I've noticed it when previewing my work or doing a peer review in Review 360. I have not tested it in Incognito mode. I will give that a try.
3. It is noted in several files across all our developers' files. I have personally checked a few, and the audio has plenty of time between audio on the timeline.
Do I create a case in support and send one of our files?
Thank you.Hello CarrieAnders421,
I appreciate you sharing those additional details. I've gone ahead and opened a support case on your behalf so we can continue the conversation with our talented Support Engineers. You're in excellent hands! Our team will be in touch shortly via email.
StevenBenassi I'm here to report I am having this same audio timing issue with the newest version of Storyline.
For me, this is happening in the 360 Review player. I have not yet uploaded this file to the LMS. I will try that and report back. For now:
1. My timelines have at most 3 different audio clips that are at most ~30 seconds long. Their timing is dependent on their placement on the timeline and no other triggers.
2. Each slide's first audio clip is placed at the 1 second mark at the earliest.
3. The audio clips were uploaded from my hard drive (not using built-in AI audio features).
4. The overlapping/de-syncing during the review is inconsistent. Sometimes it overlaps nearly every slide, sometimes viewers are having zero problems within the same browser.
5. This is happening (and sometimes not happening) in Chrome and Edge, again inconsistently on the same browser and computer for the same people.
6. This is a bug that seems to be particularly pronounced using the newer version of Storyline. I have had previous projects in previous versions with bigger files and higher quantity of separate audio clips for which this problem did not occur.
Some workarounds already mentioned, such as creating a single audio file or creating timeline triggers for media playback, while it might put a band-aid the issue, it does put a significant wrench into the translation process. This project is going to be translated into 7 or so different languages and these workarounds, like having to adjust not only asset timing but also trigger timing to account for length differences across languages, are going to be taxing on my time and attention. I also would prefer not to downgrade to a previous version because I'm using new features (which are quite cool, thank you, love the JavaScript-related updates in particular).
Has there been any more investigation into the cause of this with the new versions? I understand what's been said about latency in calling for separate clips, but, again, I have not encountered this level of de-sync before the April 2026 version of SL.
