Variable Playback Speed

I hope that this is only a step towards variable playback speed for the whole project as this is of very limited use to us (we generally host our videos outside of the Storyline project).

It also makes the lack of overall playback speed more jarring to learners when they can control the playback speed of the videos but not the overall training.

There are 3 issues here.

First, being able to slow playback is an important Accessibility feature found across most common player formats including YouTube and other video platforms. Many of my viewers are requesting this based on Accessibility needs. This issue in particular may at some point force me to change training platforms.

Second, the ability to speed and slow playback to meet student learning styles has been sited many times in feedback on my courses.

Third, many of my courses are viewed in offices around the world, where English is not their first or primary language. These folks have expressed significant need to slow the presentations down so they can better understand the narration.

Please make this a HIGH PRIORITY. I see this has been requested for over 5 years. I ask that you don't underestimate how important this feature is. Please feel free to contact me if you want to discuss this further.

Aaron Smith

I vote yes.  My client has requested this and I'm unable to provide it.

Many DAW's have a playback feature which allows multiple play back speeds. How hard would it be to copy the code from one like Audacity, which is written in C++ and C, and add a small selector to the audio playback? I don't write code so I have no idea how difficult that would be, but surely with so many audio recording software products on the market, something could be put together by Articulate Storyline?

Looking forward to you reply! Thanks so much! 

-Ben. 

Panopto, the streaming video company, allows for speed up/down playback. Often I would speed up playback to 1.75 in order to check captions when editing. Especially when you're dealing with professors' classes getting turned into webinars, some can be deadly slow, and it really benefits to speed up playback.

People's time is so compressed now.

Has there been any progress in getting to this feature?

First, I want to apologize for the snarky-ness of my earlier comment. I think I probably wrote it very quickly and didn't take the time necessary to discover all interpretations of its tone-of-voice. That was my fault, and so I'd like to apologize for being rude. 

Moving forward, it looks like what folks are requesting will be possible with the QT C++ library, however, there is a cost-factor associated with the Enterprise Level license, so I can understand why development has been so slow for this feature request.

This library may also be a little overkill for just adding a feature like variable-speed playback, but it's at least a good starting place. 

QT Library, MediaPlayer Class

QT QMediaPlayer Class Documentation

Ooh, nice rec!  Doesn't help me accelerate the audio in my courses at all, but that's a really useful tool in other areas of my work.

Based on the age of all these variable speed playback feature requests I won't hold my breath waiting for it to become a reality.

I'm noticing that Rise has this functionality for videos. Is there not a way to enable the same functionality for Storyline?

Gsap is build into Storyline360, ( not in 3 ) so you can use gsap code anywhere. To speed up audio you need to select the proper audio and change the playbackRate.

Something like this:

If you code it like this...

var allAudios = document.getElementsByTagName("audio");

it will get all audio on a page.

However then you have to loop the collection of elements you found like this...

for (var i = 0; i < allAudio.length; i++) {
   allAudios[i].playbackRate = 2.0;
}

If you want to speed up a single audio file...its like this
 allAudios[1].playbackRate = 2.0;