Error on preview generator of metadata/cache OS files.

[nezumiwriter]

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I ask for apologies if this is already sorted in some how and I didn't find my answer after a period of searching about it. Also sorry if I have redacted more as needed. Please advise if further data is required.

Steps to reproduce

1. php occ preview:generate-all
2. Go to admin > Registers (Logs)
3. Reports of errors is shown: "Movie preview generation process failed, file=/[user_redacted]/files/Photos/[path_redacted]/._M00300.m4v"

Expected behaviour

Skip metadata files (or even hidden dot files)

Actual behaviour

previewgenerator tries to make a preview of a file just based on extensión and without possibility to skip some possible patterns related with metadata files as Apple Double "._XXXXX.m4v" files. This is filling my nexcloud server logs.

Short-term solution will be talk with owners, as it is a small home nextcloud server, to proceed to its removal.

Server configuration

Web server: Apache/Nginx

Database: PostgreSQL

PHP version: 8.4

**Nextcloud version:**34.0.0

List of activated apps

``` Enabled: - activity: 7.0.0 - app_api: 34.0.0 - appstore: 1.0.0 - bruteforcesettings: 7.0.0 - circles: 34.0.0 - cloud_federation_api: 1.18.0 - comments: 1.24.0 - contactsinteraction: 1.15.0 - dashboard: 7.14.0 - dav: 1.39.0 - drawio: 4.2.5 - federatedfilesharing: 1.24.0 - federation: 1.24.0 - files: 2.6.0 - files_downloadlimit: 5.2.0-dev.0 - files_lock: 34.0.0 - files_pdfviewer: 7.0.0-dev.0 - files_reminders: 1.7.0 - files_sharing: 1.26.0 - files_trashbin: 1.24.0 - files_versions: 1.27.0 - firstrunwizard: 7.0.0-dev.0 - guests: 4.8.0 - logreader: 7.0.0 - lookup_server_connector: 1.22.0 - maps: 1.7.1 - memories: 8.1.0 - nextcloud_announcements: 6.0.0 - notifications: 7.0.0-dev.1 - oauth2: 1.22.0 - office: 1.0.0 - password_policy: 6.0.0-dev.0 - photos: 7.0.0 - previewgenerator: 5.14.0 - privacy: 6.0.0-dev.1 - profile: 1.3.0 - provisioning_api: 1.24.0 - recommendations: 7.0.0-dev.0 - related_resources: 5.0.0-dev.0 - serverinfo: 6.0.0 - settings: 1.17.0 - sharebymail: 1.24.0 - support: 6.0.0 - survey_client: 6.0.0-dev.0 - systemtags: 1.24.0 - text: 8.0.0 - theming: 2.9.0 - twofactor_backupcodes: 1.23.0 - twofactor_totp: 16.0.0 - twofactor_webauthn: 2.7.0 - updatenotification: 1.24.0 - user_status: 1.14.0 - viewer: 7.0.0-dev.0 - weather_status: 1.14.0 - webhook_listeners: 1.6.0 - workflowengine: 2.16.0 Disabled: - admin_audit: 1.24.0 - encryption: 2.22.0 - files_external: 1.26.0 - suspicious_login: 12.0.0-dev.0 - twofactor_nextcloud_notification: 8.0.0 - user_ldap: 1.25.0 - user_migration: 10.4.0 (installed 10.4.0) ```

Nextcloud configuration

{
    "system": {
[redacted_for_privacy_and_security]
        "installed": true,
        "maintenance": false,
        "forbidden_filename_basenames": [
            "con",
            "prn",
            "aux",
            "nul",
            "com0",
            "com1",
            "com2",
            "com3",
            "com4",
            "com5",
            "com6",
            "com7",
            "com8",
            "com9",
            "com\u00b9",
            "com\u00b2",
            "com\u00b3",
            "lpt0",
            "lpt1",
            "lpt2",
            "lpt3",
            "lpt4",
            "lpt5",
            "lpt6",
            "lpt7",
            "lpt8",
            "lpt9",
            "lpt\u00b9",
            "lpt\u00b2",
            "lpt\u00b3"
        ],
        "forbidden_filename_characters": [
            "<",
            ">",
            ":",
            "\"",
            "|",
            "?",
            "*",
            "\\",
            "\/"
        ],
        "forbidden_filename_extensions": [
            " ",
            ".",
            ".filepart",
            ".part"
        ],
        "config_preset": 2,
        "memories.db.triggers.fcu": true,
        "memories.exiftool": "\/mnt\/storage0\/srv\/nextcloud\/www-data\/nextcloud-v34.0.0.12\/apps\/memories\/bin-ext\/exiftool-aarch64-glibc",
        "memories.vod.path": "\/mnt\/storage0\/srv\/nextcloud\/www-data\/nextcloud-v34.0.0.12\/apps\/memories\/bin-ext\/go-vod-aarch64",
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "enabledPreviewProviders": [
            "OC\\Preview\\Image",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\TIFF",
            "OC\\Preview\\Movie"
        ],
        "preview_max_x": 1024,
        "preview_max_y": 1024,
        "memories.gis_type": 2,
        "app_install_overwrite": [],
        "maintenance_window_start": 2
    }
}

Browser

Browser name: Not a browser issue,core

Browser version: 124/125/…

Operating system: Related with Mac

Browser log