Time/Date Stamp Missing When Converting MP4/MOV move file to AVCHD Format

Not exactly sure about your specifics.  Sounds like you look at the file via the OS like in File Explorer and time and date of creation of your movie file are blank?  Or is it that when you look at the files meta data in some application it isn't there?  And the problem only occurs with the HD version?

You may like this time info from MSDN if using Windows.

Not all file systems can record creation and last access times, and not all file systems record them in the same manner. For example, the resolution of create time on FAT is 10 milliseconds, while write time has a resolution of 2 seconds and access time has a resolution of 1 day, so it is really the access date. The NTFS file system delays updates to the last access time for a file by up to 1 hour after the last access.

To retrieve the file times for a specified file, use the GetFileTime function. GetFileTime copies the creation, last access, and last write times to individual FILETIME structures. You can also retrieve file times using the FindFirstFile and FindNextFile functions. These functions copy the file times to FILETIME structures in a WIN32_FIND_DATA structure. When writing to a file, the last write time is not fully updated until all handles that are used for writing are closed.

To set the file times for a file, use the SetFileTime function. This function lets you modify creation, last access, and last write times without changing the content of the file. You can compare the times of different files by using the CompareFileTime function. The function compares two file times and returns a value that indicates which time is later or returns 0 (zero) if the times are equal.

from this link:
https://msdn.microsoft.com/en-us/library/windows/desktop/ms724290(v=vs.85).aspx

or similar time stamp info from here:
http://www.techrepublic.com/article/build-your-skills-learn-to-manipulate-file-time-stamps-in-windows/

I find great variance with the level of details different movie applications offer.  Mostly with the free ones.  If I remember correctly, one developer released a movie file converter I wanted, but didn't update the file modified date, or something like that.  For me, it varies greatly from developer to developer.

What OS?  What procedure and applications do you use to convert?

You might shop carefully for a better converter.

If you want to add metadata, you can select values and edit the “Details.” If you want to strip the metadata from your photos, however, you want to click “Remove Properties and Personal Information” at the bottom of the properties dialog.

from this link:
http://www.howtogeek.com/203592/what-is-exif-data-and-how-to-remove-it/

Using a Panasonic video camera - no still pictures. Also using the Panasonic HD Writer to convert the file to HD and no date or time appear. When using the RCA type connectors the time/date stamp does show up. Would vATS be a solution?

I have never used HD Writer.  Did you check your version of HD Writer?  Should be sure you're up-to-date with 2.6 or better that can be found here.

http://av.jpn.support.panasonic.com/support/global/cs/soft/download/hdw26ee_w7.html

I believe the only HD format supported by HD Writer is AVCHD.  Should see that menu option when you import your movie to your computer I think.  Here's a specific known issue people have found needed fixing.

There is a known incompatibility of the AVCHD format within the Panasonic brand's original HD Writer importing and editing software, which shipped from 2006 to 2008. This version of HD Writer cannot recognize the current 1080i format or newer formats like 1080p50 or 1080p60. The newer HD Writer AE can in fact read the newer 1080i format while versions 2 and higher can read 1080p (in both frame rates).

from here:
http://fileinfo.com/extension/avchd


But, regardless, was thinking there was a chance Panasonic fixed your issue with software update.


Are you using Windows 7?

Windows 7 does not support importing of AVCHD video metadata such as thumbnail images, playlists, and clip index files. Joining AVCHD video files during the import is not supported either.[30]

from here:
https://en.wikipedia.org/wiki/AVCHD



And I've noticed some EXIF data stored for video files are put into a .tmb file next to the video file, so based on the above, I'm thinking if your AVCHD stores EXIF data in a .tmb file and you're using Windows 7, maybe that's the problem.

However, if you're getting your EXIF data properly displayed when you run cables from the output port of your camera to a TV input port, then the EXIF data exists in your original movie storage area somewhere.  I have not been able to confirm where yet.  I would try looking in your camera storage for the .tmb files,  Attach camera to computer via USB and it should come up in File Explorer as a new storage device.  Navigate through the folders until you find the DCIM folder.  Explore the area looking for .tmb files.  You should be able to determine which .tmb file goes with which movie.  Then possibly copying the .tmb file to the folder on your PC where you stored your converted movie might make it available.  Of course, it might not since it is technically a different file.  It is mentioned here:

The *.TMB file was found on data storage of Panasonic HD camcorders. This files contains extra capabilities such as thumbnail, face detection and etc.

They are not important to captured video playback, but they can be used by Panasonic native video editing application for camcorders HD Writer to import other effects to a final video file.

http://www.file-extensions.org/tmb-file-extension-panasonic-camcorder-extra-file



Some software for movies gives the user the option to carry forward the EXIF data when exporting, converting, or copying movies.  Could you let us know what you find out?  And what  version of Windows you have?  And what version of HD Writer?  And what model of camera?

No other answer was correct