Improve UX of the audio delay slider

Most users want to select very small time durations like 0.3s, which is virtually impossible right now and worse not remembered once succeeded.

removed Beginner friendly label

There are a number of problems with the UX for audio and subtitle delay:

1. Granularity of the slider is ~110ms, which is a bit too coarse. (VLC for desktop uses 50ms).
2. The act of taking your finger off the control often moves it by up to a few hundred ms.
3. The app doesn't remember the last used settings, which is a pain if you use Bluetooth headphones which introduce a constant delay (as I do).

This patch addresses 1 & 2 by reducing the slider range from ±30s to ±1s and fixing the granularity at exactly 50ms (same as VLC for desktop). It also displays the delay as milliseconds instead of seconds.

This patch doesn't address 3.

audio-delay.diff

It might make sense to deploy OBSlider here like for playback position.

assigned to @caro

@caro will give you feedback on the patch later - thanks for your patch!

@Marginal thank you so much for your patch. I just applied and pushed it and stole your author name and email from your github. Hope that's fine

closed with 7b360847

closed

See also: https://trac.videolan.org/vlc/ticket/14612

@caro Yes. Thanks.

added Feature label

mentioned in issue vlc#14612 (closed)