Peview Generator refueses to make thumbnails for videos from Samsung (any android version) phones

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Steps to reproduce

1. Record any video with Samsung
2. Upload it to Nextcloud
3. No profit - go to Memories app and not get any thumbnail for uploaded video. Of course this video can be played without any problem in Nextcloud, it’s just a problem with thumbnail.

Expected behaviour

Preview Generator should generate thumbnail for requested file

Actual behaviour

sudo -u www-data php occ preview:generate /directory/filename.mp4 -vvv

In Generator.php line 366:

  [OCP\Files\NotFoundException]
  No provider successfully handled the preview generation


Exception trace:
  at /var/www/nextcloud/lib/private/Preview/Generator.php:366
 OC\Preview\Generator->generateProviderPreview() at /var/www/nextcloud/lib/private/Preview/Generator.php:313
 OC\Preview\Generator->getMaxPreview() at /var/www/nextcloud/lib/private/Preview/Generator.php:117
 OC\Preview\Generator->generatePreviews() at /var/www/nextcloud/lib/private/PreviewManager.php:182
 OC\PreviewManager->generatePreviews() at /var/www/nextcloud/core/Command/Preview/Generate.php:92
 OC\Core\Command\Preview\Generate->execute() at /var/www/nextcloud/3rdparty/symfony/console/Command/Command.php:326
 Symfony\Component\Console\Command\Command->run() at /var/www/nextcloud/3rdparty/symfony/console/Application.php:1078
 Symfony\Component\Console\Application->doRunCommand() at /var/www/nextcloud/3rdparty/symfony/console/Application.php:324
 Symfony\Component\Console\Application->doRun() at /var/www/nextcloud/3rdparty/symfony/console/Application.php:175
 Symfony\Component\Console\Application->run() at /var/www/nextcloud/lib/private/Console/Application.php:187
 OC\Console\Application->run() at /var/www/nextcloud/console.php:87
 require_once() at /var/www/nextcloud/occ:33

preview:generate [-s|--size SIZE] [-c|--crop] [-m|--mode MODE] [--] <file>

Server configuration

Web server: Apache 2.4.58

Database: MariaDB

PHP version: 8.3

Nextcloud version: 31.0.5

Enabled:
  - activity: 4.0.0
  - app_api: 5.0.2
  - bruteforcesettings: 4.0.0
  - circles: 31.0.0
  - cloud_federation_api: 1.14.0
  - comments: 1.21.0
  - 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_external: 1.23.0
  - 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
  - ldap_write_support: 1.13.0
  - logreader: 4.0.0
  - lookup_server_connector: 1.19.0
  - memories: 7.5.2
  - nextcloud_announcements: 3.0.0
  - 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
  - serverinfo: 3.0.0
  - settings: 1.14.0
  - survey_client: 3.0.0
  - suspicious_login: 9.0.1
  - systemtags: 1.21.1
  - text: 5.0.0
  - theming: 2.6.1
  - theming_customcss: 1.18.0
  - twofactor_backupcodes: 1.20.0
  - updatenotification: 1.21.0
  - user_ldap: 1.22.0
  - viewer: 4.0.0
  - webhook_listeners: 1.2.0
  - workflow_media_converter: 1.13.5
  - workflowengine: 2.13.0
Disabled:
  - admin_audit: 1.21.0
  - contactsinteraction: 1.12.0 (installed 1.9.0)
  - encryption: 2.19.0
  - files_rightclick: 0.15.1 (installed 0.15.1)
  - files_scripts: 4.1.0 (installed 4.0.3)
  - sharebymail: 1.21.0 (installed 1.18.0)
  - support: 3.0.0 (installed 1.11.0)
  - twofactor_nextcloud_notification: 5.0.0
  - twofactor_totp: 13.0.0-dev.0
  - user_status: 1.11.0 (installed 1.8.1)
  - video_converter: 1.0.6 (installed 1.0.6)
  - weather_status: 1.11.0 (installed 1.8.0)
  - workflow_script: 2.0.0 (installed 2.0.0)

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "nc.p12.com.pl",
            "192.168.1.112"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "31.0.5.1",
        "overwrite.cli.url": "https:\/\/192.168.1.112",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "maintenance": false,
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory",
        "theme": "",
        "loglevel": 2,
        "twofactor_enforced": "false",
        "twofactor_enforced_groups": [],
        "twofactor_enforced_excluded_groups": [],
        "defaultapp": "memories,files,dashboard",
        "memories.exiftool": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/exiftool-amd64-glibc",
        "memories.vod.path": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/go-vod-amd64",
        "enable_previews": true,
        "enabledPreviewProviders": [
            "OC\\Preview\\Movie",
            "OC\\Preview\\TIFF",
            "OC\\Preview\\Image",
            "OC\\Preview\\HEIC"
        ],
        "preview_max_memory": 5120,
        "skeletondirectory": "",
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "memories.video_default_quality": "-1",
        "preview_max_filesize_image": 10240,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "app_install_overwrite": [
            "video_converter",
            "files_rightclick"
        ],
        "maintenance_window_start": 23,
        "memories.db.triggers.fcu": true,
        "preview_max_x": 4096,
        "preview_max_y": 4096
    }
}

Browser

Browser name: Brave

Browser version: 1.78.102

Operating system: Ubuntu 24.04.2

Additionally, information about files that worked/ didn't work with Preview Generator

File that worked:

General
Format :	MPEG-4
Format profile :	Base Media / Version 2
Codec ID :	mp42 (isom/mp42)
File size :	18.0 MiB
Duration :	7 s 280 ms
Overall bit rate :	20.7 Mb/s
Frame rate :	30.051 FPS
Encoded date :	2025-06-09 21:22:56 UTC
Tagged date :	2025-06-09 21:22:56 UTC
Writing operating system :	Google Android 15
Writing hardware :	motorola edge 50 ultra
Video
ID :	1
Format :	AVC
Format/Info :	Advanced Video Codec
Format profile :	High@L4.1
Format settings :	CABAC / 1 Ref Frames
Format settings, CABAC :	Yes
Format settings, Reference frames :	1 frame
Format settings, GOP :	M=1, N=30
Codec ID :	avc1
Codec ID/Info :	Advanced Video Coding
Duration :	7 s 188 ms
Bit rate :	20.3 Mb/s
Width :	1 920 pixels
Height :	1 080 pixels
Display aspect ratio :	16:9
Frame rate mode :	Variable
Frame rate :	30.051 FPS
Minimum frame rate :	27.916 FPS
Maximum frame rate :	32.491 FPS
Standard :	PAL
Color space :	YUV
Chroma subsampling :	4:2:0
Bit depth :	8 bits
Scan type :	Progressive
Bits/(Pixel*Frame) :	0.325
Stream size :	17.4 MiB (97%)
Title :	VideoHandle
Language :	English
Encoded date :	2025-06-09 21:22:56 UTC
Tagged date :	2025-06-09 21:22:56 UTC
Color range :	Full
colour_range_Original :	Limited
Color primaries :	BT.601 PAL
colour_primaries_Original :	BT.709
Transfer characteristics :	BT.709
Matrix coefficients :	BT.601
matrix_coefficients_Original :	BT.709
mdhd_Duration :	7188
Codec configuration box :	avcC
Audio
ID :	2
Format :	AAC LC
Format/Info :	Advanced Audio Codec Low Complexity
Codec ID :	mp4a-40-2
Duration :	7 s 280 ms
Source duration :	7 s 211 ms
Bit rate mode :	Constant
Nominal bit rate :	256 kb/s
Channel(s) :	2 channels
Channel layout :	L R
Sampling rate :	48.0 kHz
Frame rate :	46.875 FPS (1024 SPF)
Compression mode :	Lossy
Source stream size :	225 KiB (1%)
Title :	SoundHandle
Language :	English
Encoded date :	2025-06-09 21:22:56 UTC
Tagged date :	2025-06-09 21:22:56 UTC
mdhd_Duration :	7280

General
Format :	MPEG-4
Format profile :	Base Media / Version 2
Codec ID :	mp42 (isom/mp42)
File size :	71.7 MiB
Duration :	34 s 802 ms
Overall bit rate mode :	Variable
Overall bit rate :	17.3 Mb/s
Frame rate :	30.000 FPS
Encoded date :	2018-04-22 10:47:09 UTC
Tagged date :	2018-04-22 10:47:09 UTC
Writing operating system :	Google Android 7.0
Video
ID :	1
Format :	AVC
Format/Info :	Advanced Video Codec
Format profile :	Constrained Baseline@L4
Format settings :	1 Ref Frames
Format settings, CABAC :	No
Format settings, Reference frames :	1 frame
Format settings, GOP :	M=1, N=31
Format settings, Slice count :	2 slices per frame
Codec ID :	avc1
Codec ID/Info :	Advanced Video Coding
Duration :	34 s 802 ms
Source duration :	34 s 817 ms
Bit rate mode :	Variable
Bit rate :	17.0 Mb/s
Width :	1 920 pixels
Height :	1 080 pixels
Display aspect ratio :	16:9
Frame rate mode :	Variable
Frame rate :	30.000 FPS
Minimum frame rate :	21.062 FPS
Maximum frame rate :	39.982 FPS
Color space :	YUV
Chroma subsampling :	4:2:0
Bit depth :	8 bits
Scan type :	Progressive
Bits/(Pixel*Frame) :	0.273
Stream size :	70.6 MiB (98%)
Source stream size :	70.6 MiB (98%)
Title :	VideoHandle
Language :	English
Encoded date :	2018-04-22 10:47:09 UTC
Tagged date :	2018-04-22 10:47:09 UTC
Color range :	Limited
Color primaries :	BT.709
Transfer characteristics :	BT.709
Matrix coefficients :	BT.709
mdhd_Duration :	34802
Codec configuration box :	avcC
Audio
ID :	2
Format :	AAC LC
Format/Info :	Advanced Audio Codec Low Complexity
Codec ID :	mp4a-40-2
Duration :	34 s 731 ms
Bit rate mode :	Constant
Bit rate :	192 kb/s
Channel(s) :	2 channels
Channel layout :	L R
Sampling rate :	48.0 kHz
Frame rate :	46.875 FPS (1024 SPF)
Compression mode :	Lossy
Stream size :	814 KiB (1%)
Title :	SoundHandle
Language :	English
Encoded date :	2018-04-22 10:47:09 UTC
Tagged date :	2018-04-22 10:47:09 UTC
mdhd_Duration :	34731

Files that didn't work:

General
Format :	MPEG-4
Format profile :	Base Media / Version 2
Codec ID :	mp42 (isom/mp42)
File size :	88.8 MiB
Duration :	1 min 0 s
Overall bit rate :	12.2 Mb/s
Frame rate :	29.891 FPS
Encoded date :	2025-06-07 18:16:24 UTC
Tagged date :	2025-06-07 18:16:24 UTC
Recorded location :	
Writing operating system :	Google Android 15
Writing hardware :	Samsung Galaxy S25 (SM-S931B)
com.android.video.temporal_layers_count :	Unknown kind of value!
com.samsung.android.utc_offset :	+0200
Video
ID :	1
Format :	HEVC
Format/Info :	High Efficiency Video Coding
Format profile :	Main 10@L4@Main
Codec ID :	hvc1
Codec ID/Info :	High Efficiency Video Coding
Duration :	1 min 0 s
Source duration :	1 min 0 s
Bit rate :	12.0 Mb/s
Width :	1 920 pixels
Height :	1 080 pixels
Display aspect ratio :	16:9
Rotation :	180°
Frame rate mode :	Variable
Frame rate :	29.891 FPS
Minimum frame rate :	15.005 FPS
Maximum frame rate :	33.645 FPS
Real frame rate :	30.000 FPS
Color space :	YUV
Chroma subsampling :	4:2:0
Bit depth :	10 bits
Bits/(Pixel*Frame) :	0.193
Stream size :	86.9 MiB (98%)
Source stream size :	86.9 MiB (98%)
Title :	VideoHandle
Language :	English
Encoded date :	2025-06-07 18:16:24 UTC
Tagged date :	2025-06-07 18:16:24 UTC
Color range :	Limited
Color primaries :	BT.2020
Transfer characteristics :	HLG
Matrix coefficients :	BT.2020 non-constant
mdhd_Duration :	60989
Codec configuration box :	hvcC
Audio
ID :	2
Format :	AAC LC
Format/Info :	Advanced Audio Codec Low Complexity
Codec ID :	mp4a-40-2
Duration :	1 min 0 s
Bit rate mode :	Constant
Bit rate :	256 kb/s
Channel(s) :	2 channels
Channel layout :	L R
Sampling rate :	48.0 kHz
Frame rate :	46.875 FPS (1024 SPF)
Compression mode :	Lossy
Stream size :	1.86 MiB (2%)
Title :	SoundHandle
Language :	English
Encoded date :	2025-06-07 18:16:24 UTC
Tagged date :	2025-06-07 18:16:24 UTC

General
Format :	MPEG-4
Format profile :	Base Media / Version 2
Codec ID :	mp42 (isom/mp42)
File size :	29.4 MiB
Duration :	20 s 45 ms
Overall bit rate :	12.3 Mb/s
Frame rate :	29.970 FPS
Encoded date :	2025-06-09 20:48:58 UTC
Tagged date :	2025-06-09 20:48:58 UTC
Writing operating system :	Google Android 15
Writing hardware :	Samsung Galaxy S25 (SM-S931B)
com.samsung.android.utc_offset :	+0200
Video
ID :	1
Format :	AVC
Format/Info :	Advanced Video Codec
Format profile :	High@L3.1
Format settings :	CABAC / 1 Ref Frames
Format settings, CABAC :	Yes
Format settings, Reference frames :	1 frame
Format settings, GOP :	M=1, N=30
Codec ID :	avc1
Codec ID/Info :	Advanced Video Coding
Duration :	20 s 45 ms
Bit rate :	12.0 Mb/s
Width :	1 280 pixels
Height :	720 pixels
Display aspect ratio :	16:9
Frame rate mode :	Variable
Frame rate :	29.970 (29970/1000) FPS
Minimum frame rate :	19.235 FPS
Maximum frame rate :	30.020 FPS
Real frame rate :	30.000 FPS
Standard :	PAL
Color space :	YUV
Chroma subsampling :	4:2:0
Bit depth :	8 bits
Scan type :	Progressive
Bits/(Pixel*Frame) :	0.436
Stream size :	28.8 MiB (98%)
Title :	VideoHandle
Language :	English
Encoded date :	2025-06-09 20:48:58 UTC
Tagged date :	2025-06-09 20:48:58 UTC
Color range :	Limited
Color primaries :	BT.709
Transfer characteristics :	BT.709
Matrix coefficients :	BT.709
mdhd_Duration :	20045
Codec configuration box :	avcC
Audio
ID :	2
Format :	AAC LC
Format/Info :	Advanced Audio Codec Low Complexity
Codec ID :	mp4a-40-2
Duration :	20 s 32 ms
Bit rate mode :	Constant
Bit rate :	256 kb/s
Channel(s) :	2 channels
Channel layout :	L R
Sampling rate :	48.0 kHz
Frame rate :	46.875 FPS (1024 SPF)
Compression mode :	Lossy
Stream size :	626 KiB (2%)
Title :	SoundHandle
Language :	English
Encoded date :	2025-06-09 20:48:58 UTC
Tagged date :	2025-06-09 20:48:58 UTC

General
Format :	MPEG-4
Format profile :	Base Media / Version 2
Codec ID :	mp42 (isom/mp42)
File size :	40.5 MiB
Duration :	19 s 662 ms
Overall bit rate :	17.3 Mb/s
Frame rate :	30.000 FPS
Encoded date :	2023-06-21 19:18:51 UTC
Tagged date :	2023-06-21 19:18:51 UTC
Writing operating system :	Google Android 13
Writing hardware :	Samsung SM-G990B2
Video
ID :	1
Format :	AVC
Format/Info :	Advanced Video Codec
Format profile :	High@L4
Format settings :	CABAC / 1 Ref Frames
Format settings, CABAC :	Yes
Format settings, Reference frames :	1 frame
Format settings, GOP :	M=1, N=30
Codec ID :	avc1
Codec ID/Info :	Advanced Video Coding
Duration :	19 s 662 ms
Bit rate :	17.0 Mb/s
Width :	1 920 pixels
Height :	1 080 pixels
Display aspect ratio :	16:9
Rotation :	90°
Frame rate mode :	Variable
Frame rate :	30.000 FPS
Minimum frame rate :	29.278 FPS
Maximum frame rate :	30.822 FPS
Real frame rate :	30.000 FPS
Standard :	PAL
Color space :	YUV
Chroma subsampling :	4:2:0
Bit depth :	8 bits
Scan type :	Progressive
Bits/(Pixel*Frame) :	0.273
Stream size :	39.8 MiB (98%)
Title :	VideoHandle
Language :	English
Encoded date :	2023-06-21 19:18:51 UTC
Tagged date :	2023-06-21 19:18:51 UTC
Color range :	Limited
Color primaries :	BT.709
Transfer characteristics :	BT.709
Matrix coefficients :	BT.709
Codec configuration box :	avcC
Audio
ID :	2
Format :	AAC LC
Format/Info :	Advanced Audio Codec Low Complexity
Codec ID :	mp4a-40-2
Duration :	19 s 632 ms
Source duration :	19 s 605 ms
Bit rate mode :	Constant
Bit rate :	256 kb/s
Channel(s) :	2 channels
Channel layout :	L R
Sampling rate :	48.0 kHz
Frame rate :	46.875 FPS (1024 SPF)
Compression mode :	Lossy
Stream size :	613 KiB (1%)
Source stream size :	613 KiB (1%)
Title :	SoundHandle
Language :	English
Encoded date :	2023-06-21 19:18:51 UTC
Tagged date :	2023-06-21 19:18:51 UTC
mdhd_Duration :	19632

Start with the preview:generate command and the lib/private/Preview/Generator.php stack trace, then inspect the enabled OC\Preview\Movie provider. Reproduce the failure with the Samsung HEVC video described in the issue and compare it with the working files. Done means a thumbnail is generated for the affected Samsung video.