Video Playback Stumbeling and Losing Sound when Scroll Bar is Used

Steps to reproduce

1. Upload a larger video file to the nextcloud server (l.e. avi)
2. play back the video from either media view or files view
3. Jump to a different frame within the video during playback using the scroll bar - do that a second time - try to continue playing the video

Expected behaviour

Video playback should continue at the chosen frame without stopping and with sound turned on as before

Actual behaviour

Video playback sometimes stops completely - sometimes video starts from begining - sometimes works for first trial, after second or third move completely hangs.
In multiple tries the video playback continued, but the sound disappeared. I could now restore sound by manually selecting "track 1" within sound menu.

Reasoning or why should it be changed/implemented?

Better UX while watching videos

Environment data

iOS version: iOS 17.6 and iOS 18 public beta

Nextcloud iOS app version: 5.5.0.11

Server operating system: Debian (Armbian amd64)

Web server: Apache as reverse proxy - Nextcloud aio with Apache

Database: Postgresql

PHP version: 8.3

Nextcloud version: 29.0.4

Start by reproducing repeated seeking during playback on the listed iOS and Nextcloud app versions, using the supplied video and server environment. Check whether playback resumes at the selected frame and whether audio remains enabled after multiple seeks; done means both behaviors work consistently.