(dis)connection of BT keyboard stops playback and loses timeline position

[nrvale0]

Important information

Android version:

LineageOS 20-20231227-nightly-gts4lvwifi / Android 13

mpv-android version:

2024-11-30-release

Which version of mpv-android introduced the problem (if known):

This has been a long-running issue with all(?) releases over the past few years.

Description

If a video or audio file is playing and a BT keyboard is connected/disconnected the media file's playback halts and upon restarting the timeline progress has been lost. Meaning the media file restart play at 0:00.

Log output

log.txt

[sfan5]

As far as I can see the app handles all relevant configuration changes and I don't have a BT keyboard to test this myself right now.
Nothing useful in the log either unfortunately.

[nrvale0]

So I did some digging on forums. Lots of folks complaining about playback stopped when a BT speaker is (dis)connected and some folks saying that is an internal thing with the Android audio routing. Assuming that is correct, I thought "Well maybe its all BT devices and not just speakers?"

mpv-android seems to be impacted on both connect and disconnect. vlc, for comparison, doesn't seem to be impacted on either.

Not sure what to make of that data point other than it disproves my hypotheses about it being something intractable down in the Android BT routing logic.

I suppose I need to figure out how to tap the logs of some of the Android OS subsystems and see if I can spot anything interesting in those logs.