[testerr]

I try to setup Android set-top box w/KODI + wireless speakers working reliable, but found problem at every step.

Lastest problem: when I play videos, its audio played back by Bluetooth have continuously changed delay.
At beginning of the 2-hour video it is about 1300ms, but at the end of movie it is finally about 450ms.

So during watching videos in Kodi I must from time to time continuously correcting A/V sync.
Needless to say how this will affect the viewing experience.

Why this delay isn't constant?
It is possible to avoid this delay "drifting"?

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I have following setup: Android Fire TV + Bluetooth Wireless Avantree Saturn Pro Receiver + Speaker (or Bluetooth Sony Headphones DR-BT50).
On booth devices delay is "drifting" during watch.

[Ned Scott]

That is simply the nature of bluetooth audio. Sometimes you get lucky and things don't get a noticeable delay, and sometimes it drifts enough to be noticeable. Kodi does not currently have any way to automatically compensate for it.

[testerr]

Bad news.

So it seems that using Bluetooth speakers with Kodi is BAD IDEA at the root?

[Ned Scott]

Depending on the system or something. I've had it work great on some setups, but others wouldn't work no matter what I did. If there is a way to make it more accurate then it might be something on the android or hardware level. Or maybe even depending on something like framerate of a specific video, as a guess. There just doesn't seem to be a way to fix this universally in Kodi.