Pictures stacked despite disabling stacking for Unique ID and Sequential Names #1618

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opened 2026-02-20 00:17:14 -05:00 by deekerman · 2 comments

deekerman commented

2026-02-20 00:17:14 -05:00

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Originally created by @mrlimacz on GitHub (Nov 19, 2022).

I disabled stacking for Unique ID and Sequential Names in library settings. After indexing originals, pictures with the same name (different extension) end up being stacked even though they were taken on a different day.

Exiftool output:

$ exiftool -g -j -n -time:all *
[{
  "SourceFile": "IMG_8234.jpg",
  "File": {
    "FileModifyDate": "2021:09:13 21:37:25+02:00",
    "FileAccessDate": "2022:11:19 13:14:29+01:00",
    "FileInodeChangeDate": "2022:11:19 13:14:25+01:00"
  },
  "EXIF": {
    "ModifyDate": "2021:08:24 20:38:57",
    "DateTimeOriginal": "2021:08:24 20:38:57",
    "CreateDate": "2021:08:24 20:38:57",
    "OffsetTime": "+03:00",
    "OffsetTimeOriginal": "+03:00",
    "OffsetTimeDigitized": "+03:00",
    "SubSecTimeOriginal": 418,
    "SubSecTimeDigitized": 418,
    "GPSDateStamp": "2021:08:24"
  },
  "ICC_Profile": {
    "ProfileDateTime": "2017:07:07 13:22:32"
  },
  "Composite": {
    "SubSecCreateDate": "2021:08:24 20:38:57.418+03:00",
    "SubSecDateTimeOriginal": "2021:08:24 20:38:57.418+03:00",
    "SubSecModifyDate": "2021:08:24 20:38:57+03:00"
  }
},
{
  "SourceFile": "IMG_8234.JPG",
  "File": {
    "FileModifyDate": "2021:09:13 21:37:25+02:00",
    "FileAccessDate": "2022:11:19 13:14:28+01:00",
    "FileInodeChangeDate": "2022:11:19 13:14:25+01:00"
  },
  "EXIF": {
    "ModifyDate": "2021:08:21 00:20:08",
    "DateTimeOriginal": "2021:08:21 00:20:08",
    "CreateDate": "2021:08:21 00:20:08",
    "OffsetTime": "+03:00",
    "OffsetTimeOriginal": "+03:00",
    "OffsetTimeDigitized": "+03:00",
    "SubSecTimeOriginal": 117,
    "SubSecTimeDigitized": 117
  },
  "Composite": {
    "SubSecCreateDate": "2021:08:21 00:20:08.117+03:00",
    "SubSecDateTimeOriginal": "2021:08:21 00:20:08.117+03:00",
    "SubSecModifyDate": "2021:08:21 00:20:08+03:00"
  }
}]

I sent you these two photos over email.

Originally created by @mrlimacz on GitHub (Nov 19, 2022). I disabled stacking for Unique ID and Sequential Names in library settings. After indexing originals, pictures with the same name (different extension) end up being stacked even though they were taken on a different day. ![Screenshot from 2022-11-19 13-18-19](https://user-images.githubusercontent.com/29689324/202850674-9f0a9b47-348e-4ee0-ab8a-df431c01e40e.png) ![Screenshot from 2022-11-19 13-19-03](https://user-images.githubusercontent.com/29689324/202850682-bc820472-fd83-4b71-a053-d840fa46ddcc.png) ![Screenshot from 2022-11-19 13-19-41](https://user-images.githubusercontent.com/29689324/202850688-d449de3e-ec3a-4ad4-83c4-21cb738bf403.png) Exiftool output: ``` $ exiftool -g -j -n -time:all * [{ "SourceFile": "IMG_8234.jpg", "File": { "FileModifyDate": "2021:09:13 21:37:25+02:00", "FileAccessDate": "2022:11:19 13:14:29+01:00", "FileInodeChangeDate": "2022:11:19 13:14:25+01:00" }, "EXIF": { "ModifyDate": "2021:08:24 20:38:57", "DateTimeOriginal": "2021:08:24 20:38:57", "CreateDate": "2021:08:24 20:38:57", "OffsetTime": "+03:00", "OffsetTimeOriginal": "+03:00", "OffsetTimeDigitized": "+03:00", "SubSecTimeOriginal": 418, "SubSecTimeDigitized": 418, "GPSDateStamp": "2021:08:24" }, "ICC_Profile": { "ProfileDateTime": "2017:07:07 13:22:32" }, "Composite": { "SubSecCreateDate": "2021:08:24 20:38:57.418+03:00", "SubSecDateTimeOriginal": "2021:08:24 20:38:57.418+03:00", "SubSecModifyDate": "2021:08:24 20:38:57+03:00" } }, { "SourceFile": "IMG_8234.JPG", "File": { "FileModifyDate": "2021:09:13 21:37:25+02:00", "FileAccessDate": "2022:11:19 13:14:28+01:00", "FileInodeChangeDate": "2022:11:19 13:14:25+01:00" }, "EXIF": { "ModifyDate": "2021:08:21 00:20:08", "DateTimeOriginal": "2021:08:21 00:20:08", "CreateDate": "2021:08:21 00:20:08", "OffsetTime": "+03:00", "OffsetTimeOriginal": "+03:00", "OffsetTimeDigitized": "+03:00", "SubSecTimeOriginal": 117, "SubSecTimeDigitized": 117 }, "Composite": { "SubSecCreateDate": "2021:08:21 00:20:08.117+03:00", "SubSecDateTimeOriginal": "2021:08:21 00:20:08.117+03:00", "SubSecModifyDate": "2021:08:21 00:20:08+03:00" } }] ``` I sent you these two photos over email.

deekerman

2026-02-20 00:17:14 -05:00

closed this issue
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deekerman commented

2026-02-20 00:17:16 -05:00

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@lastzero commented on GitHub (Nov 19, 2022):

PLEASE USE OUR OFFICIAL BUG REPORT TEMPLATE AND PROVIDE FURTHER INFORMATION, FOR EXAMPLE IF YOU FIRST INDEXED THE FILES WITH THE SETTINGS TURNED ON AND ONLY DISABLED THEM AFTERWARDS. ALSO MAKE SURE TO READ THE USER GUIDE BEFORE OPENING A BUG REPORT:

https://docs.photoprism.app/user-guide/organize/stacks/#for-what-reasons-can-files-be-stacked

@lastzero commented on GitHub (Nov 19, 2022): PLEASE USE OUR OFFICIAL BUG REPORT TEMPLATE AND PROVIDE FURTHER INFORMATION, FOR EXAMPLE IF YOU FIRST INDEXED THE FILES WITH THE SETTINGS TURNED ON AND ONLY DISABLED THEM AFTERWARDS. ALSO MAKE SURE TO READ THE USER GUIDE BEFORE OPENING A BUG REPORT: - https://docs.photoprism.app/user-guide/organize/stacks/#for-what-reasons-can-files-be-stacked

deekerman commented

2026-02-20 00:17:16 -05:00

Author

Owner

@lastzero commented on GitHub (Nov 19, 2022):

For what reasons can files be stacked?

Files sharing exactly the same file and folder name will always be stacked, for example /2018/IMG_1234.jpg and /2018/IMG_1234.avi
Files with related, sequential names like /2018/IMG_1234 (2).jpg and /2018/IMG_1234 (3).jpg may be stacked as well (optional)
Pictures were taken at the same GPS position and second (optional)
Image metadata contains the same Unique Image ID or XMP Instance ID (optional)

You can change the behaviour for 2 - 4 in Settings.

Note: Changing stacking settings won't unstack already stacked files.

@lastzero commented on GitHub (Nov 19, 2022): ## For what reasons can files be stacked? 1. Files sharing exactly the same file and folder name will always be stacked, for example `/2018/IMG_1234.jpg` and `/2018/IMG_1234.avi` 2. Files with related, sequential names like `/2018/IMG_1234 (2).jpg` and `/2018/IMG_1234 (3).jpg` may be stacked as well (optional) 3. Pictures were taken at the same GPS position and second (optional) 4. Image metadata contains the same *Unique Image ID* or *XMP Instance ID* (optional) You can change the behaviour for 2 - 4 in [*Settings*](https://docs.photoprism.app/user-guide/settings/library/). **Note: Changing stacking settings won't unstack already stacked files.**