Delay between Count-in and Song Playback

[Danielku15]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When activating count-in and the count-in finishes, the playback of the normal song does not directly start but there is a delay.

Expected Behavior

When the count-in finished, the real playback must start immediately.

Steps To Reproduce

1. Open https://jsfiddle.net/danielku15/xs57qvLr/2/ on affected devices
2. Hit play
3. Notice how the song playback does not start directly after the count-in

Link to jsFiddle, CodePen, Project

https://jsfiddle.net/danielku15/xs57qvLr/2/

Found in Version

1.4 (alpha)

Platform

Web

Environment

- **OS**: iOS, Android
- **Browser**: Safari, Chrome

Anything else?

The delay varies from device to device. In my tests newer iOS versions had a longer delay then older ones. iPad was also slightly faster in the newer iOS.

But the problem is not iOS exclusive, on my pixel 6 pro I also can notice a delay (even though it is a lot smaller)

[h16416]

In iOS platform, with alphatab v1.5.0, I have the same countIn delay problem, while the web env is OK.

[Danielku15]

There were no fixes or improvements made in 1.5.0 for this problem. I looked at it various times but its hard to reproduce in an environment where the problem can be narrowed down.

My best guess currently is that it is a similar problem like in #2076

You could try v1.6.0 (re-release version) to see if it has an impact. I haven't checked this problem after the changes in #2076

[Danielku15]

I did again some tests comparing 1.5 and 1.6 and I can clearly see the delay gone. Feel free to test on your side with https://next.alphatab.net/ or NPM version @alpha.