Question Nextcloud extension preview movie

[Stuttgart_Plesk]

Server operating system version

Ubuntu 20.04.5 LTS

Plesk version and microupdate number

Plesk Obsidian v18.0.54_build1800230807.10 os_Ubuntu 20.04

Hi there,

does anybody know how to enable movie and HEIC previews in the Nextcloud extension of Plesk?
OCCWeb output in Nextcloud admin looks as follows.

"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "25.0.10.1",
"overwrite.cli.url": "http:\/\/localhost",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"instanceid": "***REMOVED SENSITIVE VALUE***",
"enabledPreviewProviders": [
"OC\\Preview\\BMP",
"OC\\Preview\\GIF",
"OC\\Preview\\JPEG",
"OC\\Preview\\MarkDown",
"OC\\Preview\\MP3",
"OC\\Preview\\PNG",
"OC\\Preview\\TXT",
"OC\\Preview\\XBitmap",
"OC\\Preview\\OpenDocument",
"OC\\Preview\\Krita",
"OC\\Preview\\Movie",
"OC\\Preview\\HEIC"

Also, I have installed FFmpeg by the Plesk SSH Terminal.

Cheers,
Benny