Image previews for HEIC images no longer shown when using Imaginary

[BWibo]

Description

When using Imaginary as preview provider, image previews for HEIC image are no longer shown in recommended files. All other previews work fine for me, I can monitor preview generation in the Imaginary logs.
As far as I recall this used to work earlier, so it is probably a regression introduces in NC 27.0.0 or 27.0.1.
The problem still persists in 27.1.0.

How to reproduce

• Setup NC 27 with Imaginary as preview provider
• Upload 2 HEIC and 2 JPE images with a current timestamp
• Check the recommended files view on the dashboard for preview display

Server configuration detail

Operating system: Linux 5.4.0-162-generic #179-Ubuntu SMP Mon Aug 14 08:51:31 UTC 2023 x86_64

Webserver: Unknown (cli)

Database: pgsql PostgreSQL 14.9 on x86_64-pc-linux-musl, compiled by gcc (Alpine 12.2.1_git20220924-r10) 12.2.1 20220924, 64-bit

PHP version: 8.2.10

Modules loaded: Core, date, libxml, openssl, pcre, sqlite3, zlib, ctype, curl, dom, fileinfo, filter, ftp, hash, iconv, json, mbstring, SPL, session, PDO, pdo_sqlite, standard, posix, random, readline, Reflection, Phar, SimpleXML, tokenizer, xml, xmlreader, xmlwriter, mysqlnd, apcu, bcmath, exif, gd, gmp, imagick, intl, ldap, memcached, pcntl, pdo_mysql, pdo_pgsql, redis, sodium, sysvsem, zip, Zend OPcache

Nextcloud version: 27.1.0 - 27.1.0.7

Updated from an older Nextcloud/ownCloud or fresh install:

Where did you install Nextcloud from: unknown

Signing status

[]

List of activated apps

Enabled:
 - activity: 2.19.0
 - calendar: 4.5.0
 - circles: 27.0.1
 - cloud_federation_api: 1.10.0
 - comments: 1.17.0
 - contacts: 5.4.0
 - contactsinteraction: 1.8.0
 - dashboard: 7.7.0
 - dav: 1.27.0
 - deck: 1.11.0
 - federatedfilesharing: 1.17.0
 - federation: 1.17.0
 - files: 1.22.0
 - files_pdfviewer: 2.8.0
 - files_photospheres: 1.27.0
 - files_reminders: 1.0.0
 - files_rightclick: 1.6.0
 - files_sharing: 1.19.0
 - files_trashbin: 1.17.0
 - files_versions: 1.20.0
 - firstrunwizard: 2.16.0
 - logreader: 2.12.0
 - lookup_server_connector: 1.15.0
 - memories: 5.4.1
 - nextcloud_announcements: 1.16.0
 - notifications: 2.15.0
 - oauth2: 1.15.1
 - password_policy: 1.17.0
 - photos: 2.3.0
 - previewgenerator: 5.3.0
 - privacy: 1.11.0
 - provisioning_api: 1.17.0
 - recognize: 4.3.2
 - recommendations: 1.6.0
 - related_resources: 1.2.0
 - serverinfo: 1.17.0
 - settings: 1.9.0
 - sharebymail: 1.17.0
 - side_menu: 3.10.3
 - support: 1.10.0
 - survey_client: 1.15.0
 - systemtags: 1.17.0
 - text: 3.8.0
 - theming: 2.2.0
 - twofactor_backupcodes: 1.16.0
 - updatenotification: 1.17.0
 - user_status: 1.7.0
 - viewer: 2.1.0
 - weather_status: 1.7.0
 - workflowengine: 2.9.0
Disabled:
 - admin_audit
 - bruteforcesettings
 - encryption
 - facerecognition: 0.9.31
 - files_external
 - suspicious_login
 - twofactor_totp
 - user_ldap

Configuration (config/config.php)

{
    "memcache.local": "\\OC\\Memcache\\APCu",
    "apps_paths": [
        {
            "path": "\/var\/www\/html\/apps",
            "url": "\/apps",
            "writable": false
        },
        {
            "path": "\/var\/www\/html\/custom_apps",
            "url": "\/custom_apps",
            "writable": true
        }
    ],
    "memcache.distributed": "\\OC\\Memcache\\Redis",
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "password": "***REMOVED SENSITIVE VALUE***",
        "port": 6379
    },
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "localhost",
        "***REMOVED SENSITIVE VALUE***"
    ],
    "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "dbtype": "pgsql",
    "version": "27.1.0.7",
    "overwrite.cli.url": "http:\/\/localhost",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "memories.exiftool": "\/var\/www\/html\/custom_apps\/memories\/exiftool-bin\/exiftool-amd64-glibc",
    "memories.vod.path": "\/var\/www\/html\/custom_apps\/memories\/exiftool-bin\/go-vod-amd64",
    "preview_max_memory": 2048,
    "enable_previews": true,
    "preview_concurrency_all": 6,
    "preview_concurrency_new": 3,
    "enabledPreviewProviders": [
        "OC\\Preview\\JPEG",
        "OC\\Preview\\GIF",
        "OC\\Preview\\HEIC",
        "OC\\Preview\\XBitmap",
        "OC\\Preview\\Movie",
        "OC\\Preview\\PDF",
        "OC\\Preview\\Image",
        "OC\\Preview\\TXT",
        "OC\\Preview\\MarkDown",
        "OC\\Preview\\Epub",
        "OC\\Preview\\TIFF",
        "OC\\Preview\\MKV",
        "OC\\Preview\\MP4",
        "OC\\Preview\\AVI",
        "OC\\Preview\\PNG",
        "OC\\Preview\\SVG",
        "OC\\Preview\\Font",
        "OC\\Preview\\Imaginary"
    ],
    "preview_max_x": "2048",
    "preview_max_y": "2048",
    "jpeg_quality": "80",
    "maintenance": false,
    "updater.release.channel": "beta",
    "memories.gis_type": 2,
    "loglevel": "0",
    "mail_smtpmode": "smtp",
    "mail_smtpsecure": "ssl",
    "mail_sendmailmode": "smtp",
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpauth": 1,
    "mail_smtpport": "465",
    "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
    "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
    "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
    "memories.vod.ffprobe": "\/usr\/bin\/ffprobe"
}

Cron Configuration: Array
(
[backgroundjobs_mode] => cron
[lastcron] => 1695126301
)

External storages: files_external is disabled

Encryption: no

User-backends:

• OC\User\Database

Browser: unknown