mp4 issues on Android

[troelshartmann]

I've been using the app successfully to fix up my image library using the Gallery app on my phone, which is now all done, however I'm stuck with a number of mp4 files.

Most of them are working correctly and appear under the correct date as you scroll through the gallery, however there are a number of stubborn ones which appear to be completely ignoring the metadata for some reason.

Here's a sample of the output of one which doesn't appear in the correct location:

Code Select Expand

[File]          FileModifyDate                  : 2012:12:23 15:21:30+11:00
[File]          FileAccessDate                  : 2019:06:02 21:34:29+10:00
[File]          FileInodeChangeDate             : 2019:06:02 21:16:58+10:00
[QuickTime]     CreateDate                      : 2012:12:23 15:21:30
[QuickTime]     ModifyDate                      : 2012:12:23 15:21:30
[QuickTime]     TrackCreateDate                 : 2012:12:23 15:21:30
[QuickTime]     TrackModifyDate                 : 2012:12:23 15:21:30
[QuickTime]     MediaCreateDate                 : 2012:12:23 15:21:30
[QuickTime]     MediaModifyDate                 : 2012:12:23 15:21:30
[QuickTime]     TrackCreateDate                 : 2012:12:23 15:21:30
[QuickTime]     TrackModifyDate                 : 2012:12:23 15:21:30
[QuickTime]     MediaCreateDate                 : 2012:12:23 15:21:30
[QuickTime]     MediaModifyDate                 : 2012:12:23 15:21:30
[QuickTime]     DateTimeOriginal                : 2012:12:23 15:21:30
[XMP]           DateTimeOriginal                : 2012:12:23 15:21:30
[XMP]           CreateDate                      : 2012:12:23 15:21:30
[XMP]           ModifyDate                      : 2012:12:23 15:21:30

You can see that every writeable tag is set to the date I want but the Gallery app appears to be ignoring all of them. The date is shows for the file is 2019:using a file creation date for the file is 2019:06:02 21:06. I've tried everything I can think of. I've run the files through video converter, tried wiping the tags and setting them manually etc.

Here's the same output from a different file which works correctly:

Code Select Expand

[File]          FileModifyDate                  : 2019:04:24 12:35:00+10:00
[File]          FileAccessDate                  : 2019:06:02 21:40:59+10:00
[File]          FileInodeChangeDate             : 2019:05:19 21:08:05+10:00
[QuickTime]     CreateDate                      : 2019:04:24 00:35:46
[QuickTime]     ModifyDate                      : 2019:04:24 00:35:46
[QuickTime]     TrackCreateDate                 : 2019:04:24 00:35:46
[QuickTime]     TrackModifyDate                 : 2019:04:24 00:35:46
[QuickTime]     MediaCreateDate                 : 2019:04:24 00:35:46
[QuickTime]     MediaModifyDate                 : 2019:04:24 00:35:46
[QuickTime]     TrackCreateDate                 : 2019:04:24 00:35:46
[QuickTime]     TrackModifyDate                 : 2019:04:24 00:35:46
[QuickTime]     MediaCreateDate                 : 2019:04:24 00:35:46
[QuickTime]     MediaModifyDate                 : 2019:04:24 00:35:46

Any ideas?

[Phil Harvey]

Is there a Gallery forum where you can ask this?

As far as I can tell, the file that doesn't work has all the date/time information of the one that does work, plus a lot more.

Unless the extra metadata is confusing Gallery somehow, the only thing I can think of is that you are fooling yourself and Gallery is using a cached date/time information from somewhere else.

Or if you are running on a Mac, check the FileCreateDate to see if this could be the problem (this tag is not extracted by default on a Mac).

- Phil

[troelshartmann]

I've resolved this - the tag was a red herring, it was to do with the (lack of) preservation of file dates when I was copying from my Mac to the Android device.

I changed to a different way of transferring the files and all is good now.