Preview-Generation // proc_open() // Video-Files

AsDinFlames · April 9, 2025, 3:56pm

Setup

Nextcloud Server version (e.g., 29.x.x):
- [Nextcloud Hub 10 31.0.2
Operating system and version (e.g., Ubuntu 24.04):
- Synology DSM7
Reverse proxy and version _(e.g. nginx 1.27.2)
- NGinx
PHP version (e.g, 8.3):
- 8.3.19
Installation method
- Docker-Compose in Portainer
Are you using CloudfIare, mod_security, or similar?
- Strato Domain

Summary of the issue you are facing:

I have a problem with the Previewgeneration of files exept images. I read a lot of posts and forums and fixes that dont work for me sadly. Is there any way to fix it on the Synology NAS or is it even related to the synology? In my research i found an already installed preversion of ffmpeg4 which i removed and used ffmpeg7. I tryed coping the binary data to a local folder on my volume and changed all the time the path in the config.php. While generation i can see that nextcloud is trying to but as the logs tell it failes. I hope i can get the help here Most of the forums are close or outdated so i opened a new one.

Steps to replicate it (hint: details matter!):

Installed nextcloud via docker-compose with redis and postgres-db
Aktivated the app Preview-Generator
Added SynoCli Video Drivers which was needed for ffmpeg7 in the community and also ffmpeg7 in my synology packet center
Edited the config.php:

'preview_ffmpeg_path' => '/volume1/@appstore/ffmpeg/bin/ffmpeg'
'enable_previews' => true,
  'enabledPreviewProviders' => 
  array (
    0 => 'OC\\Preview\\Movie',
    ...
    ...
  ),

Restarted everything and run the command:

docker exec -u www-data nextcloud_app php occ preview:generate-all -p "/AsD/files/Test" -vvv

Got error-message in the nextcloud.log:

"message": "proc_open(): posix_spawn() failed: No such file or directory at /var/www/html/lib/private/Preview/Movie.php#129",

I get the preview of pictures for sure but not for video files. I also uploaded some more samples with different extionsions (avi, mpeg, mp4 heic, another mp4 and mkv) but cant make it work. I mean i cant run this video in chrome either because of the black screen codec thing but thats fine.

I tryed this one as well:

github.com/yannicklescure/wiki-md

nextcloud/enable-video-previews-for-nextcloud-snap.md

main

# how-to-enable-video-previews-for-nextcloud

To enable video previews in your Nextcloud instance, you need to ensure that a few dependencies are installed, and then adjust your Nextcloud configuration to generate video thumbnails. Here’s how you can do it in the Snap version of Nextcloud.

## Steps to Enable Video Previews

### Install FFmpeg

The Nextcloud Snap package uses external tools like `ffmpeg` to generate video previews. To install `ffmpeg`, follow those steps:

- Create `/var/snap/nextcloud/bin/` directory

  ```bash
  sudo mkdir /var/snap/nextcloud/bin/
  ```

- Google for ffmpeg static build (has included static libraries). I used [https://johnvansickle.com/ffmpeg/](https://johnvansickle.com/ffmpeg/)

  ```bash
  wget https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz

This file has been truncated. show original

Log entries

{
“reqId”: “VMJry6jJDiSy2SIOGrSc”,
“level”: 3,
“time”: “2025-04-09T15:17:05+00:00”,
“remoteAddr”: “77.21.51.34”,
“user”: “AsD”,
“app”: “PHP”,
“method”: “GET”,
“url”: “/index.php/core/preview?fileId=00107138oc89b4yzfbx5&x=96&y=96&a=true”,
“message”: “proc_open(): posix_spawn() failed: No such file or directory at /var/www/html/lib/private/Preview/Movie.php#129”,
“userAgent”: “Mozilla/5.0 (Windows) mirall/3.16.2 (build 20250319) (Nextcloud, windows-10.0.26100 ClientArchitecture: x86_64 OsArchitecture: x86_64)”,
“version”: “31.0.2.1”,
“data”: {
“app”: “PHP”
},
“id”: “67f69374375b5”
}

Nextcloud Log

{"reqId":"VMJry6jJDiSy2SIOGrSc","level":3,"time":"2025-04-09T15:17:05+00:00","remoteAddr":"77.21.51.34","user":"AsD","app":"PHP","method":"GET","url":"/index.php/core/preview?fileId=00107138oc89b4yzfbx5&x=96&y=96&a=true","message":"proc_open(): posix_spawn() failed: No such file or directory at /var/www/html/lib/private/Preview/Movie.php#129","userAgent":"Mozilla/5.0 (Windows) mirall/3.16.2 (build 20250319) (Nextcloud, windows-10.0.26100 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"31.0.2.1","data":{"app":"PHP"},"id":"67f69374375b5"}

Configuration

Nextcloud

The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):

{
    "system": {
        "maintenance_window_start": 1,
        "htaccess.RewriteBase": "\/",
        "filelocking.enabled": true,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": xxxx
        },
        "default_phone_region": "de",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "upgrade.disable-web": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "192......33.",
            "nextcloud....de"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "31.0.2.1",
        "overwrite.cli.url": "http:\/\/192......33..",
        "overwriteprotocol": "https",
        "default_language": "de",
        "default_locale": "de_DE",
        "force_language": "de",
        "force_locale": "de_DE",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "preview_ffmpeg_path": "\/volume1\/docker\/nextcloud\/ffmpeg",
        "enable_previews": true,
        "enabledPreviewProviders": [
            "OC\\Preview\\Movie",
            "OC\\Preview\\PNG",
            "OC\\Preview\\JPEG",
            "OC\\Preview\\GIF",
            "OC\\Preview\\BMP",
            "OC\\Preview\\XBitmap",
            "OC\\Preview\\MP3",
            "OC\\Preview\\MP4",
            "OC\\Preview\\TXT",
            "OC\\Preview\\MarkDown",
            "OC\\Preview\\PDF",
            "OC\\Preview\\Video",
            "OC\\Preview\\MKV",
            "OC\\Preview\\AVI",
            "OC\\Preview\\MPEG",
            "OC\\Preview\\\\Font",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\Illustrator",
            "OC\\Preview\\MSOffice2003",
            "OC\\Preview\\MSOfficeDoc",
            "OC\\Preview\\PDF",
            "OC\\Preview\\MSOffice2007",
            "OC\\Preview\\Photoshop",
            "OC\\Preview\\Postscript",
            "OC\\Preview\\StarOffice",
            "OC\\Preview\\SVG",
            "OC\\Preview\\TIFF",
            "OC\\Preview\\EMF"
        ],
        "maintenance": false
    },
    "apps": {
        "activity": {
            "installed_version": "4.0.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "app_api": {
            "installed_version": "5.0.2",
            "types": "",
            "enabled": "yes"
        },
        "backgroundjob": {
            "lastjob": "224"
        },
        "bruteForce": {
            "whitelist_1": "77.21.51.34\/32"
        },
        "bruteforcesettings": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "calendar": {
            "types": "",
            "enabled": "yes",
            "installed_version": "5.2.1"
        },
        "circles": {
            "installed_version": "31.0.0",
            "types": "filesystem,dav",
            "enabled": "yes",
            "loopback_tmp_scheme": "http",
            "maintenance_update": "{\"3\":1744128643,\"2\":1744128643,\"1\":1744128643}",
            "migration_22": "1",
            "migration_run": "0",
            "maintenance_run": "0"
        },
        "cloud_federation_api": {
            "installed_version": "1.14.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "comments": {
            "installed_version": "1.21.0",
            "types": "logging",
            "enabled": "yes"
        },
        "contacts": {
            "types": "dav",
            "enabled": "yes",
            "installed_version": "7.0.5"
        },
        "contactsinteraction": {
            "installed_version": "1.12.0",
            "types": "dav",
            "enabled": "yes"
        },
        "core": {
            "installedat": "1743970520.2131",
            "vendor": "nextcloud",
            "public_files": "files_sharing\/public.php",
            "lastupdatedat": 1744211902,
            "lastcron": 1744212853,
            "moveavatarsdone": "yes",
            "previewsCleanedUp": "1",
            "lastupdateResult": "[]",
            "oc.integritycheck.checker": [],
            "files_metadata": {
                "photos-original_date_time": {
                    "value": null,
                    "type": "int",
                    "etag": "",
                    "indexed": true,
                    "editPermission": 0
                },
                "photos-exif": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-ifd0": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-size": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-gps": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "blurhash": {
                    "value": null,
                    "type": "string",
                    "etag": "9e424dbe9e4fade57b610ac7373cbc66",
                    "indexed": false,
                    "editPermission": 0
                }
            }
        },
        "dashboard": {
            "installed_version": "7.11.0",
            "types": "",
            "enabled": "yes"
        },
        "dav": {
            "installed_version": "1.33.0",
            "types": "filesystem",
            "enabled": "yes",
            "regeneratedBirthdayCalendarsForYearFix": "yes",
            "buildCalendarSearchIndex": "yes",
            "builtSocialSearchIndex": "yes",
            "buildCalendarReminderIndex": "yes"
        },
        "federatedfilesharing": {
            "installed_version": "1.21.0",
            "types": "",
            "enabled": "yes"
        },
        "federation": {
            "installed_version": "1.21.0",
            "types": "authentication",
            "enabled": "yes"
        },
        "files": {
            "installed_version": "2.3.1",
            "types": "filesystem",
            "enabled": "yes",
            "mimetype_version": "31.0.2.1"
        },
        "files_downloadlimit": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "files_pdfviewer": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "files_reminders": {
            "installed_version": "1.4.0",
            "types": "",
            "enabled": "yes"
        },
        "files_sharing": {
            "installed_version": "1.23.1",
            "types": "filesystem",
            "enabled": "yes"
        },
        "files_trashbin": {
            "installed_version": "1.21.0",
            "types": "filesystem,dav",
            "enabled": "yes"
        },
        "files_versions": {
            "installed_version": "1.24.0",
            "types": "filesystem,dav",
            "enabled": "yes"
        },
        "firstrunwizard": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "logreader": {
            "installed_version": "4.0.0",
            "types": "logging",
            "enabled": "yes"
        },
        "lookup_server_connector": {
            "installed_version": "1.19.0",
            "types": "authentication",
            "enabled": "yes"
        },
        "nextcloud_announcements": {
            "installed_version": "3.0.0",
            "types": "logging",
            "enabled": "yes",
            "pub_date": "Thu, 24 Oct 2019 00:00:00 +0200"
        },
        "notes": {
            "installed_version": "4.11.0",
            "types": "",
            "enabled": "yes"
        },
        "notifications": {
            "installed_version": "4.0.0",
            "types": "logging",
            "enabled": "yes"
        },
        "oauth2": {
            "installed_version": "1.19.1",
            "types": "authentication",
            "enabled": "yes"
        },
        "password_policy": {
            "installed_version": "3.0.0",
            "types": "authentication",
            "enabled": "yes"
        },
        "photos": {
            "installed_version": "4.0.0-dev.1",
            "types": "dav,authentication",
            "enabled": "yes",
            "lastPlaceMappedUser": "AsD",
            "lastPlaceMappingDone": "true"
        },
        "previewgenerator": {
            "installed_version": "5.8.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "privacy": {
            "installed_version": "3.0.0",
            "types": "",
            "enabled": "yes"
        },
        "profile": {
            "installed_version": "1.0.0",
            "types": "",
            "enabled": "yes"
        },
        "provisioning_api": {
            "installed_version": "1.21.0",
            "types": "prevent_group_restriction",
            "enabled": "yes"
        },
        "recommendations": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "related_resources": {
            "installed_version": "2.0.0",
            "types": "",
            "enabled": "yes"
        },
        "richdocuments": {
            "disable_certificate_verification": "",
            "wopi_url": "https:\/\/collabora.......de",
            "installed_version": "8.6.4",
            "types": "prevent_group_restriction",
            "enabled": "yes",
            "public_wopi_url": "https:\/\/collabora.......de"
        },
        "richdocumentscode": {
            "installed_version": "24.4.1302",
            "types": "",
            "enabled": "yes"
        },
        "serverinfo": {
            "installed_version": "3.0.0",
            "types": "",
            "enabled": "yes",
            "size_appdata_storage": 6399623034,
            "cached_count_appdata_files": 81105,
            "cached_count_filecache": 92246,
            "cached_count_storages": 3
        },
        "settings": {
            "installed_version": "1.14.0",
            "types": "",
            "enabled": "yes"
        },
        "sharebymail": {
            "installed_version": "1.21.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "support": {
            "installed_version": "3.0.0",
            "types": "session",
            "enabled": "yes",
            "SwitchUpdaterServerHasRun": "yes"
        },
        "survey_client": {
            "installed_version": "3.0.0",
            "types": "",
            "enabled": "yes"
        },
        "systemtags": {
            "installed_version": "1.21.1",
            "types": "logging",
            "enabled": "yes"
        },
        "text": {
            "installed_version": "5.0.0",
            "types": "dav",
            "enabled": "yes"
        },
        "theming": {
            "installed_version": "2.6.1",
            "types": "logging",
            "enabled": "yes"
        },
        "twofactor_backupcodes": {
            "installed_version": "1.20.0",
            "types": "",
            "enabled": "yes"
        },
        "twofactor_totp": {
            "installed_version": "13.0.0-dev.0",
            "types": "",
            "enabled": "yes"
        },
        "updatenotification": {
            "installed_version": "1.21.0",
            "types": "",
            "enabled": "yes",
            "calendar": "5.2.1",
            "update_check_errors": 0,
            "contacts": "7.0.5"
        },
        "user_status": {
            "installed_version": "1.11.0",
            "types": "",
            "enabled": "yes"
        },
        "viewer": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "weather_status": {
            "installed_version": "1.11.0",
            "types": "",
            "enabled": "yes"
        },
        "webhook_listeners": {
            "installed_version": "1.2.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "workflowengine": {
            "installed_version": "2.13.0",
            "types": "filesystem",
            "enabled": "yes"
        }
    }
}
ash-4.4# docker exec -u www-data nextcloud_app php occ preview:generate-all -p "/AsD/files/Test" -vvv
2025-04-09T15:37:37+00:00 Specifications: [{"width":64,"height":64,"crop":true},{"width":256,"height":256,"crop":true},{"width":1024,"height":1024,"crop":true},{"width":4096,"height":4096,"crop":true},{"width":64,"height":64,"crop":false},{"width":256,"height":256,"crop":false},{"width":1024,"height":1024,"crop":false},{"width":4096,"height":4096,"crop":false},{"width":-1,"height":64,"crop":false},{"width":-1,"height":256,"crop":false},{"width":-1,"height":1024,"crop":false},{"width":-1,"height":4096,"crop":false},{"width":64,"height":-1,"crop":false},{"width":256,"height":-1,"crop":false},{"width":1024,"height":-1,"crop":false},{"width":4096,"height":-1,"crop":false}]
2025-04-09T15:37:37+00:00 Scanning folder /AsD/files/Test
2025-04-09T15:37:37+00:00 Generating previews for /AsD/files/Test/20240303_204439.mp4
2025-04-09T15:37:37+00:00 Generating previews for /AsD/files/Test/file_example_AVI_1920_2_3MG.avi
2025-04-09T15:37:37+00:00 Generating previews for /AsD/files/Test/file_example_MP4_480_1_5MG.mp4
2025-04-09T15:37:37+00:00 Generating previews for /AsD/files/Test/sample_960x400_ocean_with_audio.mkv
2025-04-09T15:37:37+00:00 Generating previews for /AsD/files/Test/sample_960x400_ocean_with_audio.mpeg
ash-4.4# docker exec -u www-data nextcloud_app php occ config:list
{
    "system": {
        "maintenance_window_start": 1,
        "htaccess.RewriteBase": "\/",
        "filelocking.enabled": true,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": xxxx
        },
        "default_phone_region": "de",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "upgrade.disable-web": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "192......33.",
            "nextcloud.......de"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "31.0.2.1",
        "overwrite.cli.url": "http:\/\/192.....33.",
        "overwriteprotocol": "https",
        "default_language": "de",
        "default_locale": "de_DE",
        "force_language": "de",
        "force_locale": "de_DE",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "preview_ffmpeg_path": "\/volume1\/docker\/nextcloud\/ffmpeg",
        "enable_previews": true,
        "enabledPreviewProviders": {
            "0": "OC\\Preview\\Movie",
            "1": "OC\\Preview\\PNG",
            "2": "OC\\Preview\\JPEG",
            "3": "OC\\Preview\\GIF",
            "4": "OC\\Preview\\BMP",
            "5": "OC\\Preview\\XBitmap",
            "6": "OC\\Preview\\MP3",
            "7": "OC\\Preview\\MP4",
            "8": "OC\\Preview\\TXT",
            "9": "OC\\Preview\\MarkDown",
            "10": "OC\\Preview\\PDF",
            "11": "OC\\Preview\\Video",
            "15": "OC\\Preview\\\\Font",
            "16": "OC\\Preview\\HEIC",
            "17": "OC\\Preview\\Illustrator",
            "18": "OC\\Preview\\MSOffice2003",
            "19": "OC\\Preview\\MSOfficeDoc",
            "20": "OC\\Preview\\PDF",
            "21": "OC\\Preview\\MSOffice2007",
            "22": "OC\\Preview\\Photoshop",
            "23": "OC\\Preview\\Postscript",
            "24": "OC\\Preview\\StarOffice",
            "25": "OC\\Preview\\SVG",
            "26": "OC\\Preview\\TIFF",
            "27": "OC\\Preview\\EMF"
        },
        "maintenance": false
    },
    "apps": {
        "activity": {
            "installed_version": "4.0.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "app_api": {
            "installed_version": "5.0.2",
            "types": "",
            "enabled": "yes"
        },
        "backgroundjob": {
            "lastjob": "225"
        },
        "bruteForce": {
            "whitelist_1": "77.21.51.34\/32"
        },
        "bruteforcesettings": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "calendar": {
            "types": "",
            "enabled": "yes",
            "installed_version": "5.2.1"
        },
        "circles": {
            "installed_version": "31.0.0",
            "types": "filesystem,dav",
            "enabled": "yes",
            "loopback_tmp_scheme": "http",
            "maintenance_update": "{\"3\":1744128643,\"2\":1744128643,\"1\":1744128643}",
            "migration_22": "1",
            "migration_run": "0",
            "maintenance_run": "0"
        },
        "cloud_federation_api": {
            "installed_version": "1.14.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "comments": {
            "installed_version": "1.21.0",
            "types": "logging",
            "enabled": "yes"
        },
        "contacts": {
            "types": "dav",
            "enabled": "yes",
            "installed_version": "7.0.5"
        },
        "contactsinteraction": {
            "installed_version": "1.12.0",
            "types": "dav",
            "enabled": "yes"
        },
        "core": {
            "installedat": "1743970520.2131",
            "vendor": "nextcloud",
            "public_files": "files_sharing\/public.php",
            "lastupdatedat": 1744211902,
            "lastcron": 1744213066,
            "moveavatarsdone": "yes",
            "previewsCleanedUp": "1",
            "lastupdateResult": "[]",
            "oc.integritycheck.checker": [],
            "files_metadata": {
                "photos-original_date_time": {
                    "value": null,
                    "type": "int",
                    "etag": "",
                    "indexed": true,
                    "editPermission": 0
                },
                "photos-exif": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-ifd0": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-size": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-gps": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "blurhash": {
                    "value": null,
                    "type": "string",
                    "etag": "71385a9813cb6834ab738ec7a74b16bf",
                    "indexed": false,
                    "editPermission": 0
                }
            }
        },
        "dashboard": {
            "installed_version": "7.11.0",
            "types": "",
            "enabled": "yes"
        },
        "dav": {
            "installed_version": "1.33.0",
            "types": "filesystem",
            "enabled": "yes",
            "regeneratedBirthdayCalendarsForYearFix": "yes",
            "buildCalendarSearchIndex": "yes",
            "builtSocialSearchIndex": "yes",
            "buildCalendarReminderIndex": "yes"
        },
        "federatedfilesharing": {
            "installed_version": "1.21.0",
            "types": "",
            "enabled": "yes"
        },
        "federation": {
            "installed_version": "1.21.0",
            "types": "authentication",
            "enabled": "yes"
        },
        "files": {
            "installed_version": "2.3.1",
            "types": "filesystem",
            "enabled": "yes",
            "mimetype_version": "31.0.2.1"
        },
        "files_downloadlimit": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "files_pdfviewer": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "files_reminders": {
            "installed_version": "1.4.0",
            "types": "",
            "enabled": "yes"
        },
        "files_sharing": {
            "installed_version": "1.23.1",
            "types": "filesystem",
            "enabled": "yes"
        },
        "files_trashbin": {
            "installed_version": "1.21.0",
            "types": "filesystem,dav",
            "enabled": "yes"
        },
        "files_versions": {
            "installed_version": "1.24.0",
            "types": "filesystem,dav",
            "enabled": "yes"
        },
        "firstrunwizard": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "logreader": {
            "installed_version": "4.0.0",
            "types": "logging",
            "enabled": "yes"
        },
        "lookup_server_connector": {
            "installed_version": "1.19.0",
            "types": "authentication",
            "enabled": "yes"
        },
        "nextcloud_announcements": {
            "installed_version": "3.0.0",
            "types": "logging",
            "enabled": "yes",
            "pub_date": "Thu, 24 Oct 2019 00:00:00 +0200"
        },
        "notes": {
            "installed_version": "4.11.0",
            "types": "",
            "enabled": "yes"
        },
        "notifications": {
            "installed_version": "4.0.0",
            "types": "logging",
            "enabled": "yes"
        },
        "oauth2": {
            "installed_version": "1.19.1",
            "types": "authentication",
            "enabled": "yes"
        },
        "password_policy": {
            "installed_version": "3.0.0",
            "types": "authentication",
            "enabled": "yes"
        },
        "photos": {
            "installed_version": "4.0.0-dev.1",
            "types": "dav,authentication",
            "enabled": "yes",
            "lastPlaceMappedUser": "AsD",
            "lastPlaceMappingDone": "true"
        },
        "previewgenerator": {
            "installed_version": "5.8.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "privacy": {
            "installed_version": "3.0.0",
            "types": "",
            "enabled": "yes"
        },
        "profile": {
            "installed_version": "1.0.0",
            "types": "",
            "enabled": "yes"
        },
        "provisioning_api": {
            "installed_version": "1.21.0",
            "types": "prevent_group_restriction",
            "enabled": "yes"
        },
        "recommendations": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "related_resources": {
            "installed_version": "2.0.0",
            "types": "",
            "enabled": "yes"
        },
        "richdocuments": {
            "disable_certificate_verification": "",
            "wopi_url": "https:\/\/collabora......de",
            "installed_version": "8.6.4",
            "types": "prevent_group_restriction",
            "enabled": "yes",
            "public_wopi_url": "https:\/\/collabora.......de"
        },
        "richdocumentscode": {
            "installed_version": "24.4.1302",
            "types": "",
            "enabled": "yes"
        },
        "serverinfo": {
            "installed_version": "3.0.0",
            "types": "",
            "enabled": "yes",
            "size_appdata_storage": 6399623034,
            "cached_count_appdata_files": 81105,
            "cached_count_filecache": 92246,
            "cached_count_storages": 3
        },
        "settings": {
            "installed_version": "1.14.0",
            "types": "",
            "enabled": "yes"
        },
        "sharebymail": {
            "installed_version": "1.21.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "support": {
            "installed_version": "3.0.0",
            "types": "session",
            "enabled": "yes",
            "SwitchUpdaterServerHasRun": "yes"
        },
        "survey_client": {
            "installed_version": "3.0.0",
            "types": "",
            "enabled": "yes"
        },
        "systemtags": {
            "installed_version": "1.21.1",
            "types": "logging",
            "enabled": "yes"
        },
        "text": {
            "installed_version": "5.0.0",
            "types": "dav",
            "enabled": "yes"
        },
        "theming": {
            "installed_version": "2.6.1",
            "types": "logging",
            "enabled": "yes"
        },
        "twofactor_backupcodes": {
            "installed_version": "1.20.0",
            "types": "",
            "enabled": "yes"
        },
        "twofactor_totp": {
            "installed_version": "13.0.0-dev.0",
            "types": "",
            "enabled": "yes"
        },
        "updatenotification": {
            "installed_version": "1.21.0",
            "types": "",
            "enabled": "yes",
            "calendar": "5.2.1",
            "update_check_errors": 0,
            "contacts": "7.0.5"
        },
        "user_status": {
            "installed_version": "1.11.0",
            "types": "",
            "enabled": "yes"
        },
        "viewer": {
            "installed_version": "4.0.0",
            "types": "",
            "enabled": "yes"
        },
        "weather_status": {
            "installed_version": "1.11.0",
            "types": "",
            "enabled": "yes"
        },
        "webhook_listeners": {
            "installed_version": "1.2.0",
            "types": "filesystem",
            "enabled": "yes"
        },
        "workflowengine": {
            "installed_version": "2.13.0",
            "types": "filesystem",
            "enabled": "yes"
        }
    }
}

Apps

The output of occ app:list (if possible).
Enabled:

activity: 4.0.0
app_api: 5.0.2
bruteforcesettings: 4.0.0
calendar: 5.2.1
circles: 31.0.0
cloud_federation_api: 1.14.0
comments: 1.21.0
contacts: 7.0.5
contactsinteraction: 1.12.0
dashboard: 7.11.0
dav: 1.33.0
federatedfilesharing: 1.21.0
federation: 1.21.0
files: 2.3.1
files_downloadlimit: 4.0.0
files_pdfviewer: 4.0.0
files_reminders: 1.4.0
files_sharing: 1.23.1
files_trashbin: 1.21.0
files_versions: 1.24.0
firstrunwizard: 4.0.0
logreader: 4.0.0
lookup_server_connector: 1.19.0
nextcloud_announcements: 3.0.0
notes: 4.11.0
notifications: 4.0.0
oauth2: 1.19.1
password_policy: 3.0.0
photos: 4.0.0-dev.1
previewgenerator: 5.8.0
privacy: 3.0.0
profile: 1.0.0
provisioning_api: 1.21.0
recommendations: 4.0.0
related_resources: 2.0.0
richdocuments: 8.6.4
richdocumentscode: 24.4.1302
serverinfo: 3.0.0
settings: 1.14.0
sharebymail: 1.21.0
support: 3.0.0
survey_client: 3.0.0
systemtags: 1.21.1
text: 5.0.0
theming: 2.6.1
twofactor_backupcodes: 1.20.0
twofactor_totp: 13.0.0-dev.0
updatenotification: 1.21.0
user_status: 1.11.0
viewer: 4.0.0
weather_status: 1.11.0
webhook_listeners: 1.2.0
workflowengine: 2.13.0
Disabled:
admin_audit: 1.21.0
encryption: 2.19.0
files_external: 1.23.0
suspicious_login: 9.0.1
twofactor_nextcloud_notification: 5.0.0
user_ldap: 1.22.0

AsDinFlames · April 9, 2025, 6:55pm

Little update:
When i exec into my container:

docker exec -it nextcloud_app /bin/bash

And install ffmpeg here:

apt update && apt upgrade && apt install ffmpeg imagemagick ghostscript

The preview-generation is working properly. But as we know these changes inside the docker are not persistent. I mean i restarted the container, redeployed it via portainer and it is persistent until now but i guess an update will remove this changes.

Mounting the /usr/bin folder is also not what i want.
Creating an own nextcloud-image with installed ffmpeg is also not the best solution

So how can i can fix this problem?