High CPU load after watching a few MP4 files

[janumix]

Describe the bug
I upload CCTV MP4 files to NC. I can watch them easily however, after about 10-20 files CPU load dramatically rise to 100% (on client) and system almost hangs until I close Chromium browser.
It behaves all time the same on Linux Chromium and on Android, too.

To Reproduce
Steps to reproduce the behavior:

1. Upload 10-20 mp4 files (i.e. 10MB each)
2. Open Chromium browser and start watching mp4 files one by one (next - right-side arrow)
3. After watching about 10 files system almost hangs (on client side - browser stop respondig)

Expected behavior
Easy watch files one by one

Screenshots
n/a

Desktop (please complete the following information):

• OS: Ubuntu 20.04.2 LTS
• Browser: Chromium (version: 87.0.4280.88)

Smartphone (please complete the following information):

• Device: Samsung Galaxy S8
• OS: Android 9
• Browser: Samsung browser
• Version 13.2.3.2

Browser log
192.168.100.8-1617733414898.log
192.168.100.8-1617737797008.log

[szaimen]

I bet this issue is also caused by this: nextcloud/server#22334 (comment)

[skjnldsv]

AH no! This one is on the client side @szaimen 🤔

[skjnldsv]

Can't reproduce this anymore.
We added some workaround to make sure the browser clar the video caching when we close/change the currently displayed file
Closing then. If that happens again in 24 or 25, feel free to re-open