Hello @Vulksgren, the first part is being tracked at #5724, only the second half will be tracked in this issue report.
This is also happening to me on Ubuntu Budgie.
Hello @Vulksgren, @Reonu, it looks like #5724 was resolved. Are either of you still experiencing the MP4 issue on an up to date system?
Closing pending feedback.
Nothing extracted yet.
Your system information
Steps for reproducing this issue: