CreateDate and other EXIF properties not set on quicktime movies

[alber70g]

Version (please complete the following information):

• OS: MacOS
• Model Identifier: MacBookPro18,1
• Chip: Apple M1 Pro
• Version: Ventura 13.0.1 (22A400)
• Package [e.g. jar, deb, appimage, win exe with/without jre, macos bundle with/without jre]

Describe the bug

Seems to not write the file. Even though no errors occur

To Reproduce
Steps to reproduce the behavior:

1. Drag-and-drop a file
2. Set a createdate
3. Save
4. View if it's changed

Expected: the date is set to what's entered
Actual: no date present

fast-jexiftoolgui-doesnt-work.mp4

[mrtngrsbch]

Hi,
Pay attention to the tags where you type:

• Modify Date
• Date/Time Original
• Create Date

I just tested it with an IMAGE and it works OK, but NOT with an MP4.

Check the ExifTool limitations for writing MP4 at: https://exiftool.org/

[hvdwolf]

Please note that exiftool has limited write/modify options for video files. Phil really created a photo tool.
Maybe I should add some text to the app to explain this. You try to add EXIF data to an mp4. It is not possible to set a exif dates like DateTimeOriginal into a mp4. There is no metadata structure for it.

QuickTime has it's own structure and uses:
-Quicktime:DateTimeOriginal="2023:01:10 08:59:59"
-QuickTime:CreateDate="2023:01:10 08:59:59"
-QuickTime:ModifyDate="2023:01:10 08:59:59"

Exiftool is very flexible though and allows for example for "-AllDates=2023:01:01 11:59:23". It will write to EXIF unless it finds a quicktime compatible video. Then it will write the quicktime tags.
Currently you can only do this via the "exiftool commands" tab.

For some more info see https://exiftool.org/TagNames/QuickTime.html

In the menu you will find the "Date/Time -> Modify Date/Time". Currently it only works on Exif and XMP, so not on quicktime compatible videos (mp4, m4a, mov, etc.). In some routines I check on file extension. I could do that here as well for quicktime compatible movies: If so, write the quicktime tags.
I will think about it.

[hvdwolf]

I just loaded an mp4 in JTG, selected it and switched to the "ExifTool Commands" tab and used as command:
"-AllDates=2023:01:01 11:59:23"

Then checked the mp4 with exiftool (exiftool -G1 <some>.mp4 | grep -i date) and the following tags were changed:

[System]        File Modification Date/Time     : 2023:01:03 19:17:57+01:00
[System]        File Access Date/Time           : 2023:01:03 19:17:52+01:00
[System]        File Inode Change Date/Time     : 2023:01:03 19:17:57+01:00
[Track1]        Track Create Date               : 2022:06:26 13:03:26
[Track1]        Track Modify Date               : 2022:06:26 13:03:26
[Track2]        Media Create Date               : 2022:06:26 13:03:26
[Track2]        Media Modify Date               : 2022:06:26 13:03:26
[XMP-exif]      Date/Time Original              : 2023:01:01 11:59:23
[XMP-xmp]       Create Date                     : 2023:01:01 11:59:23
[XMP-xmp]       Modify Date                     : 2023:01:01 11:59:23
[Composite]     Create Date                     : 2022:06:26 13:03:26.105
[Composite]     Date/Time Original              : 2022:06:26 13:03:26.105
[Composite]     Modify Date                     : 2022:06:26 13:03:26.105

Of course the composite tags are read-only tags and created from other tags.

[hvdwolf]

I added a new menu item under menu Date/Time -> Modify all dates and times.

I hope to release a new bug fix this weekend.