Peertube background play behaviour is not consistent with Youtube (and not practical)

[Ombrelin]

Checklist

• I am able to reproduce the bug with the latest version given here: CLICK THIS LINK.
• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Affected version

0.27.4

Steps to reproduce the bug

1. Tab NewPipe's burger menu button
2. In the platform drop select Peertube, any instance
3. Play any video
4. Seek on the progress bar advance the video at the middle of it
5. Tap the "🎧 Background" button

Expected behavior

Background (sound only) playback starts, continuing at the current timecode of the video.

Actual behavior

Background (sound only) playback starts, starting back at the timestamp of the video before we seeked the progress bar to advance.

Screenshots/Screen recordings

output.webm

Logs

No response

Affected Android/Custom ROM version

Android 12 / e/OS 2.5

Affected device model

Fairphone 3

Additional information

No response

[ShareASmile]

AudricV, problem seems in properly fetching/identifying audio stream, also background player doesn't show exact duration of the audio stream in Play queue. Maybe an extractor issue?

[ShareASmile]

It looks like Closely related to #11601